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Observing System Startup and Performing a Basic Configuration

Observing System Startup and Performing a Basic Configuration

This chapter describes the system startup process and describes how to perform a basic configuration of your Cisco 12016 Gigabit Switch Router (GSR).

This chapter contains the following sections:

The primary goal of this chapter is to provide you with the necessary information to configure your system so that it can access the network or enable other hosts in the network to access your system remotely by means of a Telnet connection. Detailed configuration procedures are beyond the scope of this document, but you can find more information in the configuration publications listed in the "If You Need More Information" section. For the Cisco 12000 series line cards, you can refer to the line card documents that shipped with your system.

Sources of Cisco IOS Software

A default Cisco IOS software image for your system is available through any one of the following internal or external sources:

Checking Conditions Before System Startup

Before attempting to start up your system, confirm the following conditions:


Note A Flash memory card containing a valid Cisco IOS software image is inserted in PCMCIA slot 0 before the router is shipped. Also, by default, the software configuration register is set to 0x0102, causing the system to boot automatically from the Cisco IOS software image stored on the Flash memory card.

You must format new Flash memory cards before you can use them. After you start the router, refer to the "
Formatting a Flash Memory Card" section, later in this chapter.

After you complete the final check, proceed to the following section to start the router.

Overview of the Boot Process

The following sequence summarizes a typical boot process:

If the ROM monitor is configured to autoboot, it automatically loads and boots the Cisco IOS software. If the ROM monitor is not configured to autoboot, you must boot the Cisco IOS software manually.

Starting the Router and Observing Initial Conditions

Observe the following conditions the first time you start your router:

Step 1 Switch on all the circuit breakers that control power to the router's power shelf.

Step 2 Observe the power module LEDs:

Step 3 Visually check the two LEDs on the front of each blower module. When the blower module is operating correctly, the green LED labeled OK should be on and the red LED labeled FAIL should be off. Listen for the blowers in the blower modules; you should immediately hear them operating. In a noisy environment, the blowers might be difficult to hear, so you should place your hand in front of the exhaust vents near the top and bottom rear of the chassis to verify that the blowers are operating.

Step 4 During the GRP boot process, observe the GRP alphanumeric LED displays, which are located at one end of the GRP faceplate, near the ejector lever. (Figure 4-1 shows the LED displays in the head-up orientation to clarify the LED display message format.)


Figure 4-1: GRP Alphanumeric LED Displays (Partial Faceplate View)


Each four-digit display shows part of a two-line system message. During the GRP boot process, the LED displays present a sequence of messages similar to that shown in Table 4-1.


Table 4-1: GRP Alphanumeric LED Display Sequences
LED Display Meaning Source

MROM
nnnn

The MBus microcode begins to execute; nnnn is the microcode version number. For example, microcode version 1.17 displays as 0117.1 This display might not be visible because it occurs for only a brief time.

MBus controller

LMEM
TEST

Low memory on the GRP is being tested.

GRP ROM monitor

MEM
INIT

The size of main memory on the GRP is being discovered.

GRP ROM monitor

RP
RDY

The system is operational and ready to execute basic Cisco IOS software commands at the ROM monitor prompt (rommon>).

GRP ROM monitor

RP
UP

A valid Cisco IOS image is running.

GRP IOS software

MSTR
RP

The GRP is enabled and recognized as the system master. A valid Cisco IOS image is running.

GRP IOS software

1The version of MBus microcode running on your system might be different.

Step 5 Observe the status of the GRP interfaces using the GRP LEDs.

The remaining LEDs on the GRP (see Figure 4-2) indicate system and GRP status, which Flash memory card slot is active, which Ethernet connection is in use, and what is occurring on the Ethernet interface. (A successful GRP boot is indicated by the alphanumeric LED displays as shown in Table 4-1, but the results shown do not necessarily mean that the system has reached normal operation.)

The GRP faceplate has the following eight device or port activity indicators:


Figure 4-2: GRP LEDs (Partial Front Panel View Shown)


Step 6 During the line card boot process, which occurs immediately after the GRP boot process, observe the alphanumeric LED displays on each line card.

The alphanumeric LED displays on a line card are located in the same place as on the GRP. (See Figure 4-3.) The system attempts to boot identical line cards in parallel. Further, the system boots line cards as soon as they are powered on and become available for bootup. Each line card displays a sequence that is similar to that shown in Table 4-2.


Figure 4-3: Line Card Alphanumeric LED Displays (Partial View Shown)



Table 4-2: Line Card Alphanumeric LED Display Sequences
LED Display1 Meaning Source

MROM
nnnn

The MBus microcode begins to execute; nnnn is the microcode version number. For example, microcode version 1.17 would display as 0117.2 This display might not be visible, because it occurs for only a brief time.

MBus
controller

LMEM
TEST

Low memory on the line card is being tested.

Line card ROM monitor

MEM
INIT

The size of main memory on the line card is being discovered.

Line card ROM monitor

ROMI
GET

The ROM image is being loaded into line card memory.

GRP IOS software

FABL
WAIT

The line card is waiting for the fabric downloader to load.3

GRP IOS software

FABL
DNLD

The fabric downloader is being loaded into line card memory.

GRP IOS software

FABL
STRT

The fabric downloader is being launched.

GRP IOS software

FABL
RUN

The fabric downloader has been launched and is running.

GRP IOS software

IOS
DNLD

The Cisco IOS software is being downloaded into line card memory.

GRP IOS software

IOS
STRT

The Cisco IOS software is being launched.

GRP IOS software

IOS
UP

The Cisco IOS software is running.

GRP IOS software

IOS
RUN

The line card is enabled and ready for use.

GRP IOS software

1The LED sequence shown in Table 4-2 might occur too quickly for you to view; therefore, this sequence is provided in this tabular form as a baseline for how the line cards should function at startup.
2The version of MBus microcode running on your system might be different.
3The fabric downloader loads the Cisco IOS software image onto the line card.

Step 7 If a Flash memory card containing a valid Cisco IOS software image has been inserted in PCMCIA slot 0 and the software configuration register is set to 0x0102 (the factory default setting), the router automatically boots using this image.

As the router boots the Cisco IOS software image, the console screen displays a system banner similar to the following:

Cisco Internetwork Operating System Software
IOS (tm) GS Software (GSR-P-MZ), Released Version 12.0(8)S
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Mon 25-Oct-99 19:41
.
.
.
 

Step 8 If the ROM monitor prompt (rommon>) appears, your router did not find a valid system image or the boot sequence was otherwise interrupted, and the system entered read-only memory (ROM) monitor mode.

You must boot a Cisco IOS software image manually by issuing the boot command. For information on locating a valid Cisco IOS software image, refer to the "Locating a Valid Cisco IOS Software Image" section. For information on using one of the various forms of the boot command, refer to the "Booting from the Cisco IOS Software Image" section.

After manually booting the router, continue with Step 9.

Step 9 When you start an unconfigured system for the first time, the system displays the system banner and then automatically starts the System Configuration Dialog, an interactive script that prompts you through the steps to create a router configuration database file defining basic system operation parameters.

         --- System Configuration Dialog ---
 
Continue with configuration dialog? [yes/no]:
 

The router uses the system configuration file to activate network connections to the GRP so that the router can be administered from a remote location, or to activate the line card network interfaces. Once configured, the GRP and line cards can communicate with external networks.

You do not need to configure the network interfaces immediately, but you cannot connect to a network until you configure the interfaces for operation in your networking environment. (For configuration information, refer to the "Configuring the Router" section.


Note The interface-specific LEDs on the line cards might not go on until you have configured the line card interfaces. To verify correct operation of each line card interface, complete the first-time setup procedures and configuration, then check the status of the interfaces against the LED descriptions in the configuration notes for each line card.

If the system does not complete each of the preceding steps, go to the "Troubleshooting the Installation" chapter, later in this publication, for troubleshooting recommendations and procedures.

Manually Booting the System

If your router does not find a valid system image, or if you interrupt the boot sequence, the system might enter read-only memory (ROM) monitor mode and display the ROM monitor prompt (rommon>). From ROM monitor mode, you have access to a number of commands to locate and boot a valid system image.

Locating a Valid Cisco IOS Software Image

To locate a Cisco IOS software image for manually booting the router from the ROM monitor prompt (rommon>), use the ROM monitor mode dir command to examine the contents of the onboard Flash memory SIMM (NVRAM) on the GRP:

rommon 1> dir bootflash:
   File size                  Checksum      File name
   3277967 bytes (0x32048f)   0x6b331e30    gsr-p-mz.120-7.4.5
rommon 2> 
 

If the onboard Flash memory SIMM contains the desired Cisco IOS boot image, proceed to the "Booting from the Cisco IOS Software Image" section; otherwise, continue looking for a valid image by examining the contents of the Flash memory card (if present) in either PCMCIA slot 0 or slot 1 (or both). You can determine the content of the card by issuing the ROM monitor mode dir slotn: command, where n represents either 0 (slot 0) or 1 (slot 1). The following example of the command lists the contents of the Flash memory card in slot 0:

rommon 2> dir slot0:
   File size                  Checksum      File name
   3277967 bytes (0x32048f)   0x6b331e30    gsr-p-mz.120-7.4.5
rommon 3> 

Booting from the Cisco IOS Software Image

After locating a valid Cisco IOS software image, you can boot that image manually by issuing the appropriate ROM monitor mode boot command. Use one of the various forms of the boot command described briefly below.
Command Purpose

boot

(No argument). Boot the default image found in the onboard Flash memory SIMM. This image is loaded into the SIMM at the factory.

boot flash

(Does not specify a particular PCMCIA slot.) Attempt to boot the router using the first file found in the Flash memory card inserted in slot 0 of the GRP.

boot slot0: filename

Boots the router using the specified file from the Flash memory card in slot 0 of the GRP.

boot slot1: filename

Boots the router using the specified file from the Flash memory card in slot 1 of the GRP.

boot bootflash: filename

Boots the router using the specified file from the onboard Flash memory SIMM (NVRAM) on the GRP.

boot tftp: filename [host]

Boots the router using the specified file from a host TFTP server in the network.

Caution To prevent problems, use the boot flash command with care. Make sure that the Flash memory card inserted in PCMCIA slot 0 contains a valid Cisco IOS software image; otherwise, you could instruct the system to boot an invalid image from the Flash memory card. To examine the contents of a Flash memory card, enter a dir slotn: command.

Note If you have not changed the contents of the software configuration register, the factory default setting of 0x0102 in the software configuration register causes the system to boot Cisco IOS software from a Flash memory card inserted in PCMCIA slot 0 the next time you boot the router.

If you did not change the configuration register setting, the next reload will revert to the default configuration register setting. (The factory default configuration register setting for systems and for GRP spares is 0x0102. This setting causes the system to boot Cisco IOS software from a Flash memory card inserted in PCMCIA slot 0 the next time you boot the router.)

Configuring the Router

You can perform a basic configuration for your router by using either of the following methods:

During the first startup of an unconfigured router, the system automatically starts up the setup facility, which enables you to begin manually configuring your router. The setup facility presents a structured, interactive script that guides you through the process.
You can also invoke the setup facility at any time by issuing the setup command at the privileged EXEC mode prompt (Milo#), which invokes the same configuration script that appears automatically during the first startup of an unconfigured router.
You can enter the setup command at any time you want to alter previously entered configuration information.
The setup facility is described in the "Using Setup for Configuration Changes" section.
If you prefer not to use the interactive script of the setup facility to configure your router, you can still configure the router manually using the global configuration mode. This method requires you to enter configuration commands on a line-by-line basis at the console, without being prompted by a configuration script. It is described in the "Using Global Configuration Mode" section.

You can use whichever method suits your operating style and your knowledge of network configuration requirements. The advantage in using the setup facility is that the system uses an interactive script to guide you through the configuration process.

Whether you choose to use the setup command facility or the global configuration mode to configure the router to operate in your networking environment, be sure you know the following:

Cisco IOS User Interface

The Cisco IOS software provides a command line interface that allows you to configure and manage your router. If you are unfamiliar with the Cisco IOS command line interface, you should read the "Using the Command Line Interface" chapter in the Configuration Fundamentals Configuration Guide. This chapter discusses the different command modes, context-sensitive help, and editing features.

Cisco IOS User Interface Command Modes

The Cisco IOS user interface is organized into many different modes. The commands available to you at any given time depend on which mode you are currently in. Entering a question mark (?) at the system prompt displays a list of commands available for the current command mode.

When you start a session on the router, you begin in user mode, often called EXEC mode. Only a limited subset of the commands are available in EXEC mode. In order to have access to all commands, you must enter privileged EXEC mode. Normally, you must enter a password to enter privileged EXEC mode. From privileged EXEC mode, you can enter any EXEC command or enter global configuration mode. Most of the EXEC commands are one-time commands, such as show commands, which show the current configuration status, and clear commands, which clear counters or interfaces. The EXEC commands are not saved across reboots of the router.

The configuration modes allow you to make changes to the running configuration. If you later save the configuration, these commands are stored and persist across router reboots. In order to access the various configuration modes, you must start at global configuration mode. From global configuration mode, you can enter interface configuration mode, subinterface configuration mode, and a variety of protocol-specific modes.

ROM monitor mode, described earlier in this chapter, is a separate mode used when the router cannot boot properly. If your router does not find a valid system image when it is booting, or if its configuration file is corrupted at startup, the system might enter ROM monitor mode.

User EXEC Mode

After it boots successfully and loads the Cisco IOS software, the system displays the user EXEC mode prompt on the system console. The user EXEC mode prompt consists of the assigned router host name plus the right angle bracket (>). The following example shows the user EXEC mode prompt for a router with the factory default name Router.

Router>
 

Note The default host name is router unless it has been changed during initial configuration using the setup command facility.

Privileged EXEC Mode

Because many of the privileged commands set operating parameters, privileged access should be password protected to prevent unauthorized use.

You enter privileged EXEC mode by entering the enable command at the user EXEC mode prompt. If the enable secret password was set and saved in memory, the system prompts you to enter the enable secret password. The password is not displayed on the screen and is case sensitive. When the system accepts the password, it changes the prompt to the privileged EXEC mode prompt, which consists of the assigned router host name followed by the pound sign (#). The following example shows the change from user EXEC mode to privileged EXEC mode on the router named Router.

Router> enable
password: <password>
Router# 
 

For information about using passwords, refer to the "Configuring Global Parameters Using the Setup Facility" section.

Global Configuration Mode

Global configuration commands apply to features that affect the system as a whole, rather than just one protocol or interface. You use the configure terminal privileged EXEC command to enter global configuration mode. Commands to enable a particular routing or bridging function are also global configuration commands. For information on protocol-specific global configuration commands, see the appropriate configuration guide in the Cisco IOS software documentation.

From global configuration mode, you can access a number of other command modes. These command modes are described in the sections that follow.

Interface Configuration Mode

Many features are enabled on a per-interface basis. Interface configuration commands modify the operation of an interface such as Ethernet, FDDI, or serial port. Interface configuration commands always follow an interface global configuration command, which defines the interface type.

For details on interface configuration commands that affect general interface parameters, such as bandwidth, clock rate, and so on, see the "Interface Commands" chapter in the Configuration Fundamentals Command Reference. For protocol-specific commands, see the appropriate Cisco IOS software command reference.

Subinterface Configuration Mode

You can configure multiple virtual interfaces (called subinterfaces) on a single physical interface. Subinterfaces appear to be distinct physical interfaces to the various protocols. For detailed information on how to configure subinterfaces, see the appropriate module for a specific protocol in the Cisco IOS software documentation.

ROM Monitor Mode

If your router does not find a valid system image, or if you interrupt the boot sequence, the system might enter read-only memory (ROM) monitor mode. From ROM monitor mode, you can boot the system or perform diagnostic tests.

You can also enter ROM monitor mode by entering the reload EXEC command and then pressing the Break key during the first 60 seconds of startup.

Using Setup for Configuration Changes

The setup command facility is an interactive facility that allows you to perform first-time configuration and other basic configuration procedures on your router. The setup command facility is based on a script that prompts you to enter basic configuration information needed to start a router functioning quick and uneventfully.

During the first-time startup of an unconfigured router, the system automatically starts the setup command facility and begins displaying an interactive dialog called the System Configuration Dialog on the system console screen. The System Configuration Dialog guides you through the configuration process. It prompts you first for global (system-wide) parameters and then for interface (line card) parameters.


Note The System Configuration Dialog prompts and the order in which they appear on the screen vary depending on the platform, the interfaces installed in the router, and the Cisco IOS software image the router is running.

You must run through the entire System Configuration Dialog until you come to the item that you intend to change. To accept default settings for items that you do not want to change, press the Return key on the keyboard of the system console device.

To return to the privileged EXEC prompt without making changes and without running through the entire System Configuration Dialog, press Ctrl-C.

The setup command facility also provides help text for each prompt. To access help text, press the question mark (?) at a prompt.

When you complete your changes, the setup command facility displays the configuration command script that was created as a result of the changes you entered during the setup session. It also asks you if you want to use this configuration. If you answer Yes, the configuration is saved to NVRAM. If you answer No, the configuration is not saved and the process begins again. There is no default for this prompt; you must answer either Yes or No.

The following example shows a setup session automatically invoked during the first-time startup of the router. During the first-time startup, the system displays the system banner information, then starts the System Configuration Dialog.


Note The output examples shown in this section depend on the image version of the Cisco IOS software and the way your GSR is equipped. Your configuration dialog might be different. In any case, the setup facility script is a self-guiding interactive script that prompts you for responses and provides default or alternative values wherever possible.
Cisco Internetwork Operating System Software
.
.
.
         --- System Configuration Dialog ---
 
Continue with configuration dialog? [yes/no]: Yes
 
At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
 
Basic setup only configures enough connectivity
for management of the system, extended setup will ask you
to configure each interface of the system.
 
Would you like to enter basic management setup? [yes/no]: Yes
Configuring global parameters:
 
  Enter host name [Router]: Milo
 
  The enable secret is a password used to protect access to
  privileged EXEC and configuration modes. This password, after
  entered, becomes encrypted in the configuration.
  Enter enable secret [<Use current secret>]: barney
 
  The enable password is used when you do not specify an
  enable secret password, with some older software versions, and
  some boot images.
  Enter enable password: wilma
 
  The virtual terminal password is used to protect
  access to the router over a network interface.
  Enter virtual terminal password: bambam
  Configure SNMP Network Management? [no]:
 
Current interface summary
Interface   IP-Address      OK? Method Status                Protocol
Ethernet0   unassigned      YES unset  administratively down down
POS1/0      unassigned      YES unset  administratively down down
SDCC1/0     unassigned      YES unset  administratively down down
POS2/0      unassigned      YES unset  administratively down down
SDCC1/0     unassigned      YES unset  administratively down down
.
.
.
POS15/0     unassigned      YES unset  administratively down down
SDCC15/0    unassigned      YES unset  administratively down down
 
Enter interface name used to connect to the 
management network from the above interface summary: Ethernet0
 
Configuring interface Ethernet0:
Configure IP on this interface? Yes
  IP address for this interface: 172.16.72.2
  Subnet mask for this interface: 255.0.0.0
Class B network is 172.16.0.0, 8 subnet bits; mask is /24
 
The following configuration command script was created:
 
hostname Milo
enable secret 5 $1$krIg$emfYm/1OwHVspDuS8Gy0K1
enable password wilma
line vty 0 4
password bambam
no snmp server
!
no ip routing
!
interface Ethernet0
no shutdown
ip address 172.16.72.2 255.255.255.0
!
interface POS1/0
shutdown
no ip address
!
interface SDCC1/0
shutdown
no ip address
.
.
.
interface POS15/0
shutdown
no ip address
!
interface SDCC15/0
shutdown
no ip address
!
end
[0] Go to the IOS command prompt without saving this script.
[1] Return back to the setup without saving this config.
[2] Save this configuration to nvram and exit.
 
Enter your selection [2]:
 
Building configuration ...
 
Use the enabled mode `configure' command to modify this configuration.
 
Milo#
 
 

As explained earlier, you can set configuration parameters using the setup command facility (as presented to you automatically at initial system startup), or you can enter the setup command at any time at the privileged EXEC prompt to activate the setup facility.

The only observable difference between the configuration script displayed when the setup facility starts automatically on startup and the script displayed when you enter the setup command is that the latter displays any existing (previously entered) system configuration defaults within square brackets [ ].

For example, during the configuration of a POS interface using the setup facility at startup (assuming that the interface has not been configured previously), you will see a display in the following form as you proceed through the script and respond to queries:

Configuring interface POS1/0:
  Is this interface in use?: yes
  Configure IP on this interface?: yes
 

In this example, the script does not display default or current conditions in square brackets [ ], because you entered the setup facility automatically at startup and there is no prior configuration information.

Conversely, when you enter the setup command at the privileged EXEC mode prompt (assuming that the POS interface has been configured previously and you are being queried by the system for changes), you will see a display in the following form:

Configuring interface POS1/0:
  Is this interface in use?[yes]:
  Configure IP on this interface?[yes]:
 

In this example, the script displays the default or current conditions of the interface in square brackets [ ], because you invoked the setup facility using the setup command and there is previous configuration information. When a system prompt contains an existing default value in square brackets, press Return to accept the default value, or type an alternate value and press Return.

Configuring Global Parameters Using the Setup Facility

When you first enter the setup facility or enter the setup command, the system prompts you to configure global parameters for your router. The global parameters are used for controlling system-wide settings, including the following:

Host Name

The name you assign the router must follow the rules for ARPANET host names. It must start with a letter, end with a letter or digit, and have as interior characters only letters, digits, and hyphens. The name must consist of 63 or fewer characters. For more information, refer to RFC 1035, Domain Names---Implementation and Specifications.

Also, do not expect case to be preserved. Upper- and lowercase characters look the same to many internet software applications (often under the assumption that the application is doing you a favor). It may seem appropriate to capitalize a name the same way you might do in English, but conventions dictate that computer names appear all lowercase. For more information, refer to RFC 1178, Choosing a Name for Your Computer.

Passwords

The commands available at the user EXEC level are a subset of those available at the privileged EXEC level. Because many privileged EXEC commands are used to set system parameters, you should password-protect these commands to prevent their unauthorized use. For information on how to establish password protection or configure privilege levels, refer to the "Configuring Passwords and Privileges" chapter in the Security Configuration Guide, which is one of the modular configuration publications in the Cisco IOS software configuration documentation set that corresponds to the Cisco IOS software release installed on your Cisco hardware.

The enable secret password functionality is available for Cisco 12000 series Gigabit Switch Routers. You must enter the correct password to gain access to privileged-level commands. When you are running from the ROM monitor, you can use the enable password, depending on your boot ROM level.

For maximum security, the enable secret and the enable password should be different. If you use the same password for both the enable secret and enable functions during the setup process, the system accepts it but issues a warning indicating that you should enter a different password.

An enable secret password can contain from 1 to 25 uppercase and lowercase alphanumeric characters; an enable password can contain any number of uppercase and lowercase alphanumeric characters.

In either case, you cannot use a number as the first character. Spaces, however, are valid password characters. For example, "two words" is a valid password. Leading spaces are ignored, but trailing spaces are recognized.

Make a note of all passwords you set, and store that information in a secure location for future reference.

Protocols

For complete information on protocol configuration for your router, refer to the appropriate software configuration publications, which are listed in the "If You Need More Information" section.

Configuring Network Interfaces

This section provides a brief summary of information about configuring the network interfaces for the GRP and the installed line cards by using the setup facility or setup command. Once configured, the GRP and line cards can communicate with external networks.

To configure the interface parameters for the GRP and installed line cards, you need to have the following information available:

To obtain this information, consult your network administrator.

For additional interface configuration information for the GRP and each of the line cards installed in your router, refer to the configuration note that shipped with each card.

GRP Ethernet Interfaces

The RJ-45 and MII receptacles on the faceplate of the GRP are IEEE 802.3u-compliant interfaces. These IEEE interfaces provide connectivity to Ethernet networks. You can use one interface or the other, but not both at the same time.

The following configuration dialog example shows the system being configured for an Ethernet interface that will use the IP network layer protocol. (The Ethernet interface does not support external routing functions.) The IP address and subnet mask value are examples. The IP address and subnet mask value would be different.

Configuring interface Ethernet0:
  Is this interface in use?: yes
  Configure IP on this interface?: yes
    IP address for this interface: 3.3.1.1
    Number of bits in subnet field: 8
    Class A network is 3.0.0.0, 8 subnet bits; mask is 255.255.0.0
  Configure CLNS on this interface?: yes
Line Card Interfaces

Because of the wide variety of line cards supported by the GSR, you should refer to the configuration note that shipped with a particular card for interface configuration information. This section provides several brief examples to show the general way the setup facility handles line card interface configuration.

The following sample excerpt from a System Configuration Dialog session for a Quad OC-3c POS line card, shows settings for a typical configuration.

Configuring interface POS3/0:
  Is this interface in use?: yes
  Configure IP on this interface?: yes
  Configure IP unnumbered on this interface?: no
    IP address for this interface: 2.1.1.1
    Number of bits in subnet field: 0
    Class A network is 2.0.0.0, 0 subnet bits; mask is 255.0.0.0
  Configure CLNS on this interface?: yes

Note By default, POS interfaces use the 32-bit cyclic redundancy check (CRC) and high-level data link control (HDLC) as the encapsulation protocol.

The following sample shows the same Quad OC-3c POS line card interface being configured for IP unnumbered.

Configuring interface POS3/0:
  Is this interface in use?: yes
  Configure IP on this interface?: yes
  Configure IP unnumbered on this interface?: yes
    Assign to which interface: ethernet0
  Configure CLNS on this interface?: yes
 

In the following sample, an ATM line card is being configured to use IP.

Configuring interface parameters:
 
Configuring interface ATM1/0:
  Is this interface in use?: yes
  Configure IP on this interface?: yes
    IP address for this interface: 1.1.1.2
    Number of bits in subnet field: 0
    Class A network is 1.0.0.0, 0 subnet bits; mask is 255.0.0.0

Note You might have to establish additional configuration parameters for the installed ATM line cards if you want to use all of their capabilities. For example, additional steps are required to configure permanent virtual circuits (PVCs).

After you have manually configured the network interface parameters using the setup facility or the setup command, your GRP and line card interfaces are now available for limited use.

If you want to modify the currently saved configuration information, you can enter the setup command at the privileged EXEC mode prompt (Milo#) at any time to start another System Configuration Dialog session.

To perform more complex configuration tasks, you can enter the configure terminal command at the privileged EXEC mode prompt (Milo#), which invokes the global configuration mode [Milo(config)#]. The "Using Global Configuration Mode" section describes the use of the global configuration mode.

Checking the Software Version Number and the Installed Interfaces

To determine the current version of the Cisco IOS software running on your router, enter the show version command at the user EXEC prompt. The Cisco IOS software version number is displayed, as well as other information, including the hardware installed in the system, the names and sources of system image files, and the contents of the software configuration register.

The following sample display shows typical results from the show version command. Depending on the image version of the Cisco IOS software running on your GSR and the way the GSR is equipped, the results of your show version command might be different.

Milo# show version
Cisco Internetwork Operating System Software
IOS (tm) GS Software (GSR-P-M), Version 12.0(n)S ...
Copyright (c) 1986-1999 by cisco Systems, Inc.
.
.
.
Milo uptime is 1 week, 5 days, 19 hours, 33 minutes
System returned to ROM by reload
System image file is ...
 
cisco 12016/GRP (R5000) processor (revision 0x00) with 262144K bytes 
   of memory. R5000 CPU at 200 MHz, Implementation 35, Revision 2.1, 512KB L2 Cache Last reset from power-on 1 Route Processor Card 2 Clock Scheduler Cards . . . 5 Packet over SONET network interface(s) 507K bytes of non-volatile configuration memory. 20480K bytes of Flash PCMCIA card at slot 0 (Sector size 128K). 20480K bytes of Flash PCMCIA card at slot 1(Sector size 128K). 8192K bytes of Flash internal SIMM (Sector size 256K). Milo#

Using Global Configuration Mode

If you prefer not to use the interactive script of the setup facility, you can manually configure your router using global configuration mode. Global configuration mode enables you to enter configuration commands line by line from the console terminal.

To configure your router using global configuration mode, follow these steps:

Step 1 Connect a console terminal to the console port on the faceplate of the GRP.

Step 2 When you are asked if you want to enter the initial dialog, answer no. This causes the router to enter user EXEC mode. After a few seconds, the user EXEC mode prompt (Milo>) appears:

Would you like to enter the initial dialog? [yes]: no
Milo> 
 

Step 3 Enter privileged EXEC mode by issuing the enable command at the user EXEC prompt.

Milo> enable
 

Depending on the system and the software version, you may be prompted for a password. The prompt will change to the privileged EXEC prompt as follows:

Milo#

Step 4 At the privileged EXEC prompt, enter the configure terminal command to enter global configuration mode:

Milo# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Milo(config)#
 

In privileged EXEC mode, you can enter most of the configuration commands needed to change the system configuration. Press Ctrl-z to exit this configuration mode.

Step 5 At the privileged EXEC prompt, enter the interface type slot/port command to enter interface configuration mode as follows:

Milo(config)# interface type slot/port
Milo(config-if)#
 

In interface configuration mode, you can enter the interface configuration commands to change the system configuration. Press Ctrl-z to exit interface configuration mode.

Step 6 Save your configuration settings as described in the section "Saving the Running Configuration Settings to NVRAM," later in this chapter.

Your system is now minimally configured and able to boot using the configuration you entered.

To display a list of the configuration commands available to you, enter a question mark (?) at the prompt or press the designated help key on the terminal keyboard while in configuration mode.

Verifying the Running Configuration Settings

You can check the running configuration settings or any changes you made to the settings before you save them. To do so, enter the show running-config command at the privileged EXEC mode prompt.

For example, for a Quad OC-3c/STM-1c POS interface installed in slot 1, the show running-config command typically displays output in the following form. Depending on the image version of the Cisco IOS software running on your GSR and the way the GSR is equipped, the results of your show running-config command might be different.

router# show running-config
Building configuration...
 
Current configuration:
!
version 12.0
no service pad
no service udp-small-servers
no service tcp-small-servers
!
hostname Milo
!
enable secret 5 $1$W6K5$W/p5Bq6IPLGJ/hS9VVP1g.
enable password twink
 
interface POS1/0
 ip address 10.1.1.1 255.255.255.0
 crc 32
 clock source internal
!
interface POS1/1
 no ip address
 no ip route-cache cef
 no ip route-cache
 shutdown
 crc 32
!
interface POS1/2
 no ip address
 no ip route-cache cef
 no ip route-cache
 shutdown
 crc 32
!
interface POS1/3
 no ip address
 no ip route-cache cef
 no ip route-cache
 shutdown
 crc 32

Note For more information on a specific line card, refer to the line card installation and configuration note that came with that line card.

You can also access Cisco IOS software documentation and hardware installation and maintenance documentation on the World Wide Web at
http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.

Saving the Running Configuration Settings to NVRAM

To save the running configuration changes to NVRAM, enter the copy running-config startup-config command at the privileged EXEC mode prompt as follows:

Milo# copy running-config startup-config
 

You can also use the following command to save the running configuration settings:

Milo# write memory
 

Either command saves to NVRAM the configuration settings that you created while in the global configuration mode.


Note If
you do not save the running configuration settings to NVRAM, your configuration settings will be lost the next time you reload the system.

Reviewing the Running Configuration Settings

To display the running configuration settings stored in NVRAM, enter the show startup-config command at the privileged EXEC mode prompt. This command displays output in the form shown in the following example:. Depending on the image version of the Cisco IOS software running on your GSR and the way the GSR is equipped, the results of your show startup-config command might be different.

Milo# show startup-config
Using 5560 out of 520184 bytes
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Milo
!
enable secret 5 $1$/5HX$OOvyhG2JYhNaCbPa45Wmn/
enable password wilma
ip cef distributed switch
ip host biff 10.3.3.254
!
interface Ethernet0
 ip address 10.3.1.1 255.255.0.0
 no ip mroute-cache
!
interface POS1/0
 ip address 10.1.1.1 255.0.0.0
 no keepalive
 crc 16
 no cdp enable
.
.
.
interface ATM3/0
 ip address 10.0.0.15 255.0.0.0 secondary
 ip address 10.1.1.2 255.0.0.0
 atm pvc 1 0 64 aal5snap
 atm pvc 2 0 72 aal5mux ip 155000 155000 1
 atm pvc 3 1 90 aal5snap 312000 312000 1
 atm pvc 4 0 108 aal5snap
 atm pvc 10 0 144 aal5mux ip 155000 155000 1
 atm pvc 11 1 91 aal5snap 310000 310000 1
 map-group atm1
!
no ip classless
ip route 10.5.4.254 255.255.255.255 Ethernet0
!
map-list atm1
 ip 10.1.1.1 atm-vc 1
 ip 10.1.1.3 atm-vc 2
 ip 10.1.1.4 atm-vc 4
 ip 10.0.0.1 atm-vc 3
 ip 10.0.0.5 atm-vc 10
 ip 10.0.0.6 atm-vc 11
no logging trap
!
!
line con 0
 exec-timeout 0 0
line aux 0
line vty 0 4
 password bambam
 login
!
end
Milo# 

Performing Other Configuration Tasks

This section describes how to perform the following additional configuration tasks:

Configuring the Software Configuration Register

The software configuration register is a 16-bit register in NVRAM that you use to define specific system parameters. You can set or change the contents of this register to accomplish the following tasks:

When you first power on the router, a boot image called the GRP ROM monitor is executed, resulting in the display of the ROM monitor prompt (rommon>). At this prompt, you have access to a limited set of commands that enable you to set values in the software configuration register and to perform a number of other tasks.
The GRP ROM monitor is loaded into the GRP Flash ROM when the GRP is manufactured. You can use it to boot the system from local Flash memory devices. The GRP ROM monitor software can be upgraded in the field, if necessary.

Table 4-3 defines the bits in the software configuration register.

Caution To avoid confusion and possibly halting the system, remember that valid software configuration register values may be combinations of settings, rather than the individual settings listed in Table 4-3. For example, the factory default value 0x0102 for the software configuration register is actually a composite of several settings.

Table 4-3: Software Configuration Register Bit Meanings
Bit Number1 Hexadecimal Value Meaning/Function

00 to 03

0x0000 to 0x000F

Comprises the boot field for defining the source of a default Cisco IOS software image required to run the router (see Table 4-2)

06

0x0040

Causes system software to ignore the contents of NVRAM

07

0x0080

Enables the OEM2 bit

08

0x0100

Disables the Break function

09

0x0200

Uses a secondary bootstrap

10

0x0400

Broadcasts Internet Protocol (IP) with all zeros

11 and 12

0x0800 to 0x1000

Defines the console baud rate (the default setting is 9600 bps)

13

0x2000

Boots the default Flash memory software if the network boot fails

14

0x4000

Excludes network numbers from IP broadcasts

15

0x8000

Enables diagnostic messages and ignores the contents of NVRAM

1The factory default value for the software configuration register is 0x0102. This value is a combination of binary bit 8 = 0x0100 and binary bits 00 through 03 = 0x0002 (see Table 4-2).
2OEM = original equipment manufacturer.

Table 4-4 specifies the content of the boot field, which defines a source for booting the default Cisco IOS software image required to run the router. The content of the boot field is specified as a binary number.


Table 4-4: Definition of Bits in Boot Field of Software Configuration Register
Boot Field Meaning

00

On power up, the system remains at the ROM monitor prompt (rommon>), awaiting a user command to boot the system manually.

01

On power up, the system automatically boots the first system image found in the onboard Flash memory SIMM on the GRP.

02 to 0F

On power up, the system boots automatically from a default Cisco IOS software image stored on a TFTP server in the network. For this setting, it is assumed that the Ethernet port on the GRP is configured and operational. A default Cisco IOS software image is typically kept on a Cisco "Help Desk" server in the network for ready access by anyone needing a boot image. This setting also enables boot system commands that override the default filename.

Boot Field Settings and the Use of the Boot Command

The four low-order bits of the software configuration register (bits 3, 2, 1, and 0) form a boot field that defines the source of a Cisco IOS software image for booting the router.

You can set or change the contents of the boot field by issuing the config-register command at the global configuration mode prompt [Milo(config)#].


Note The factory default configuration register setting for a GRP shipped in a router or a GRP shipped as a field-replaceable unit is 0x0102.

When the boot field is set to either 0 or 1 (0000 or 0001), the system ignores any boot instructions in the system configuration file and one of the following occurs, depending on the boot field setting:

If you enter the boot command without an argument (that is, without specifying a file or any other boot instructions), the system automatically boots using the default image in the Flash memory SIMM on the GRP.
If you enter the boot command with arguments (that is, by instructing the system to boot from a specific source), the following options are available to you:

If you set the boot field to any bit pattern other than 0 or 1, the router uses the software configuration register settings to compute the filename of a default system image stored on a network TFTP server. It uses that system image to boot the router.

To form this filename, the system starts with cisco and links the octal equivalent of the boot field value and the processor type in the following format:

cisco<bootfieldvalue>-<processorname>
 

For example, the filename formation process would yield a range of typical filenames like the following:

cisco2-grp 
 
.
.
.
 
cisco17-grp
 

The system would use one of the filenames in this range to use in booting a default system image stored on a network TFTP server.

However, if the configuration file contains boot instructions, the system uses these instructions to boot the system, rather than using the filename it computed from the software configuration register settings.


Note If a bootable Cisco IOS software image exists in a Flash memory card inserted in PCMCIA slot 0 or slot 1, the software configuration register boot field setting is overridden, and the system boots from the Cisco IOS software image in the Flash memory card, rather than from a network TFTP image (that is, from a computed filename in the range from cisco2-grp through cisco17-grp).

Changing the Software Configuration Register Settings

To change the software configuration register settings while running system software, follow these steps:

Step 1 Enter the enable command and your password at the user EXEC mode prompt to enter privileged EXEC mode:

Milo> enable
Password: <password>
Milo#
 

Step 2 Enter the configure terminal command at the privileged EXEC mode prompt to enter global configuration mode, as shown in the following example:

Milo# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Milo(config)# 
 

Step 3 Set the contents of the software configuration register by entering the config-register value command at the global configuration mode prompt, where value is a hexadecimal number preceded by 0x, as in the following:

Milo(config)# config-register 0xvalue
 

Consult the hexadecimal column in Table 4-3 for the possible settings to enter as the four-bit value parameter.

Step 4 Exit global configuration mode by entering Ctrl-Z.

Milo(config)# config-register 0xvalue
Milo(config)# Ctrl-Z
Milo#
 

This command sequence saves the new contents of the software configuration register to NVRAM, but these new settings do not take effect until you reload or reboot the GSR.

Step 5 Enter the show version privileged EXEC command to display the software configuration register value currently in effect. This value will be used the next time the router reloads. The value is displayed on the last line of the screen display, as in the following example:

Milo# show version
 
.
.
.
 
Configuration register is 0x141 (will be 0x102 at next reload)
 

Step 6 Save the software configuration register settings as described in the "Saving the Running Configuration Settings to NVRAM" section.

Step 7 Reboot the system.

This completes the procedure for changing the contents of the software configuration register. You can set the boot field to enable a specific manual or automatic boot function.

The Meaning of the Bits in the Software Configuration Register

This section provides more detailed descriptions of the significance of the bits in the software configuration register and how they interact during the boot process.

As described earlier in the "Boot Field Settings and the Use of the Boot Command" section, the boot field setting determines the source of the Cisco IOS software image that is used to boot the router. If you set the boot field value to 0 (0x0000), you must boot the operating system manually by entering the boot command at the ROM monitor prompt (rommon>).

If you set the boot field value to 0x2 through 0xF and a valid boot system command is stored in the configuration file, the router boots the Cisco IOS software image as directed by that value. If no boot system command is present in the configuration file, the router forms a default boot filename and attempts to acquire that file from a network TFTP server.

In the following example, the software configuration register is set to boot the router from the Flash memory SIMM on the GRP and to ignore the Break function at the next reboot of the system:

Milo# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Milo(config)# config-register 0x0102
Milo(config)# boot system flash filename
Ctrl-Z
Milo# 
 

With the configuration register set to 0x0102, the system computes a default boot filename. In forming this filename, the system starts with cisco and appends the octal equivalent of the boot field number, a hyphen, and the processor type (grp).

Table 4-5 lists the range of possible computed default filenames for booting over the network. Note, however, that a valid boot system configuration command stored in the NVRAM configuration file overrides any computed default filename for booting over the network.


Note If a bootable Cisco IOS software image exists in a Flash memory card installed in PCMCIA slot 0 or 1, the configuration register setting is overridden, and the bootable Cisco IOS software image will be booted instead of the default TFTP-bootable Cisco IOS software image (cisco2-grp through cisco17-grp).


Table 4-5: Default Boot Filenames
Action/Filename Bit 3 Bit 2 Bit 1 Bit 0

Bootstrap mode

0

0

0

0

Default software

0

0

0

1

cisco2-grp

0

0

1

0

cisco3-grp

0

0

1

1

cisco4-grp

0

1

0

0

cisco5-grp

0

1

0

1

cisco6-grp

0

1

1

0

cisco7-grp

0

1

1

1

cisco10-grp

1

0

0

0

cisco11-grp

1

0

0

1

cisco12-grp

1

0

1

0

cisco13-grp

1

0

1

1

cisco14-grp

1

1

0

0

cisco15-grp

1

1

0

1

cisco16-grp

1

1

1

0

cisco17-grp

1

1

1

1

The significance of other important bits in the software configuration register is described in the following paragraphs.

Bit 8 of the software configuration register controls the console Break key. Setting bit 8 causes the system to ignore the console Break key. This is the factory default. Conversely, clearing bit 8 causes the system to interpret a Break keystroke as a command to halt normal system operation and force the system into ROM monitor mode. Regardless of the setting of the Break enable bit in the software configuration register, pressing the Break key during approximately the first five seconds of booting causes a return to the ROM monitor.

Bit 9 is not used.

Bit 10 of the software configuration register controls the host portion of the IP broadcast address. Setting bit 10 causes the processor to use all zeros in the host portion of the IP broadcast address; clearing bit 10 (the factory default) causes the processor to use all ones. Bit 10 interacts with bit 14, which controls the network and subnet portions of the IP broadcast address.

Table 4-6 shows the combined effect of bits 10 and 14.


Table 4-6: Configuration Register Settings for Broadcast Address Destination
Bit 14 Bit 10 Address (<net> <host>)

Off

Off

<ones> <ones>

Off

On

<zeros> <zeros>

On

On

<net> <zeros>

On

Off

<net> <ones>

Bits 11 and 12 of the software configuration register determine the data transmission rate of the console terminal. Table 4-7 shows the bit settings for the four available data transmission rates. The factory-set default data transmission rate is 9600 bps.


Table 4-7: System Console Terminal Data Transmission Rate Settings
Bit 12 Bit 11 Data Transmission Rate (bps)

0

0

9600

0

1

4800

1

0

1200

1

1

2400

Bit 13 of the software configuration register determines the system's response to a bootload failure. Setting bit 13 causes the system to load Cisco IOS software from Flash memory after five unsuccessful attempts to load a boot file from the network TFTP server. Clearing bit 13 causes the system to continue attempting to load a boot file from the network TFTP server indefinitely. Bit 13 in the software configuration register is set to 0 as the default at the factory.

Recovering a Lost Password

This section provides information on how to recover a lost password. The following is a general summary of the steps in the password recovery process:

    1. Enter the show version command to determine the current contents of the software configuration register.

    2. Break to the ROM monitor prompt (rommon>).

    3. Change the software configuration register setting to 0x0040. This setting causes the system to ignore the contents of NVRAM, enabling you to see your password.

    4. Enter privileged EXEC mode.

    5. Enter the show startup-config command to display the enable password.

    6. Change the software configuration register value back to its original setting.


Note If the enable password is encrypted, the following procedure will not work for password recovery, and you will have to reconfigure the system before attempting a reboot. To reconfigure the system, use the displayed configuration, which is shown using the show startup-config
command in privileged EXEC mode (shown in Step 11).

To recover a lost password, follow these steps

Step 1 Attach an ASCII terminal to the GRP console port.

Step 2 Configure the terminal to operate at 9600 bps, 8 data bits, no parity, 2 stop bits (or to whatever settings the console port is set).

Step 3 Enter the show version command at the privileged EXEC mode prompt to display the existing software configuration register value.

Milo# show version
 
.
.
.
 

The current configuration setting appears in the last line of the show version command output. Write this value on paper for use in Step 13.

Step 4 If the Break function is disabled, turn off power to the power supplies, wait 5 seconds, and then restore power.

If the Break function is enabled, press the Break key or send a break by holding down the Control key and pressing the right square bracket key (^]).

Step 5 Within five seconds of turning on the router, press the Break key. This action causes the terminal to display the ROM monitor prompt, as follows:

rommon 1> 
 

Step 6 Set the software configuration register to ignore the configuration file information, as indicated in the following sample display:

rommon 1> config-register
 
	Configuration Summary
enabled are:
console baud: 9600
boot: image specified by the boot system command
	or default to: cisco2-grp
 
do you wish to change the configuration? y/n [n]: y
enable "diagnostic mode"? y/n [n]:
enable "use net in IP bcast address"? y/n [n]:
enable "load rom after netbootfails"? y/n [n]:
enable "use all zero broadcast"? y/n [n]:
enable "break/abort has effect?" y/n [n]:
enable "ignore system config info?" [n]: y
change console baud rate? y/n [n]:
change boot characteristics? y/n [n]
 
	Configuration Summary
enabled are:
console baud: 9600
boot: image specified by the boot system command
	or default to: cisco2-grp
 
do you wish to change the configuration? y/n [n]
 
You must reset or power cycle for the new config to take effect
rommon 1>
 

Step 7 Initialize the router by entering the initialize command at the ROM monitor prompt:

rommon 1> initialize
 

The router goes through a power cycle. The software configuration register is set to ignore the configuration file. The router boots the system image and displays the system configuration dialog:

         --- System Configuration Dialog --- 
 
.
.
.
 

Step 8 Enter no in response to the system configuration dialog prompts until the following instruction is displayed:

Press RETURN to get started!
 

Step 9 Press Return.

After some interface configuration information is displayed, the user EXEC mode prompt appears:

Milo>
 

Step 10 Enter the enable command at the user EXEC mode prompt to enter privileged EXEC mode:

Milo> enable
Password: <password>
Milo# 
 

Step 11 Enter the show startup-config command at the privileged EXEC mode prompt to display the enable password in the configuration file.

Milo# show startup-config
 
.
.
.
 

Step 12 Enter the configure terminal command at the privileged EXEC mode prompt to enter global configuration mode:

Milo# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Milo(config)#
 

Step 13 Change the software configuration register value back to its original value (noted earlier in Step 3). Alternatively, change this value to 0x0102 (the factory default) by using the config-register 0xvalue command:

Milo(config)# config-register 0xvalue
Milo(config)#
 

Value is a hexadecimal number preceded by 0x, as in the following example:

Milo(config)# config-register 0x0102
 

Step 14 Exit global configuration mode by entering Ctrl-Z.

Milo(config)# Ctrl-Z
Milo#
 

Step 15 Reboot the router and use the recovered password with the enable command to gain access to the router.

Using Flash Memory Cards in the GRP

This section describes how to use Flash memory cards in the GRP and includes information on the following topics:

Installing and Removing the Flash Memory Card in a GRP

The GRP PCMCIA slots are designated as slot 0 and slot 1. When the GRP is installed in the upper card cage of a Cisco 12016 GSR, PCMCIA slot 0 is the left slot and slot 1 is the right slot. (See Figure 4-4.) In a Cisco 12016 GSR equipped with an optional, redundant GRP installed in slot 8 in the lower card cage, the GRP is installed in the head-down orientation, so PCMCIA slot 0 on the GRP is the right slot, while PCMCIA slot 1 is the left slot. Both Flash memory card slots can be used at the same time.


Note The following procedures are generic procedures that can be used for a Flash memory card in either slot position.

Figure 4-4: Installing and Removing a Flash Memory Card


To install a Flash memory card, follow these steps:

Step 1 Facing the GRP faceplate, hold the Flash memory card with the connector end of the card toward the slot and the label facing right. (See Figure 4-4a.)

Caution The Flash memory card is keyed for proper insertion. The ejector button will not pop out unless the card is inserted correctly. Part of the card remains outside the slot even when the card is properly seated. Do not attempt to force the card deeper into the slot after the ejector button pops out.

Step 2 Insert the card into the appropriate slot until the card completely seats in the connector at the back of the slot and the ejector button pops out toward you. (See Figure 4-4b).

To remove a Flash memory card, follow these steps:

Step 1 Press the appropriate ejector button until the card is free of the connector at the back of the slot. (See Figure 4-4c.)

Step 2 Pull the card from the slot and place it in an antistatic sack to protect it from ESD damage.

Formatting a Flash Memory Card

The Flash memory card that shipped with your router contains the default Cisco IOS software image you need to boot your router.


Note In some cases, you might need
to insert a new Flash memory card and copy images or backup configuration files to the card. Before you can use a new Flash memory card, you must format it. Use only Type I or Type II Flash memory cards.
Caution The following formatting procedure assumes you have already booted your router. The procedure erases all information on a Flash memory card. To prevent the loss of important data that might be stored on a Flash memory card, proceed carefully. If you want to save the data on a Flash memory card, copy the data to a server before you format the card.

To format a new Flash memory card, follow these steps:

Step 1 Insert the Flash memory card into slot 0 or slot 1. (This example uses slot 0.)

Step 2 Enter the format slot0: (or format slot1:) command at the privileged EXEC mode prompt:

Milo# format slot0:
All sectors will be erased, proceed? [confirm]
Enter volume id (up to 30 characters): MyNewCard
Formatting sector n
Format device slot0 completed
Milo#

Note This example uses a 20-MB Flash memory card. When the console displays the "Formatting sector n" line in the sample output shown above, the format routine begins to count backward from 160 (the number of sectors on a 20-MB Flash memory card). When the count reaches 1, the formatting process is complete.

The new Flash memory card is now formatted and ready to use.

For complete command descriptions and configuration information, refer to the Configuration Fundamentals Command Reference and the Configuration Fundamentals Configuration Guide in the Cisco IOS documentation set. (For information on obtaining these publications, refer to the "If You Need More Information" section.)

Specifying a Cisco IOS Software Image for Booting the System

Use the procedure in this section to identify a sample Cisco IOS software image (new.image in this example) that is to be made bootable from a Flash memory card.

The software configuration register must be set to 0x2102 during this procedure to boot the image from a Flash memory card; accordingly, the config-register command must be included in the command sequence, as shown below:

Milo# configure terminal
Milo(config)# no boot system
Milo(config)# boot system flash slot0:new.image
Milo(config)# config-register 0x2102
Ctrl-Z
Milo# copy running-config startup-config
Milo# reload
 

When you enter the reload command, the specified file (new.image) on the Flash memory card inserted in PCMCIA slot 0 is used to boot the system.

If one of the following software configuration register settings were to be specified in the preceding example, the system would behave accordingly:

Console Commands Associated with Flash Memory Use

To determine whether the present working device you are accessing is the onboard Flash SIMM on the GRP or a PCMCIA Flash memory card in a slot on the GRP, enter the pwd command at the privileged EXEC mode prompt as follows:

Milo# pwd
slot0:
Milo#
 

In this example, the present working device you are accessing is on a PCMCIA Flash memory card inserted in slot 0 of the GRP.

To change from one type of Flash memory device access to another, enter the cd device-name command, where device-name can be slot0:, slot1:, or bootflash:.

Sample uses of the change dir command include:

Milo# cd slot1:
Milo# pwd
slot1:/
Milo# cd slot0:
Milo# pwd
slot0:/
Milo# cd bootflash:
Milo# pwd
bootflash:/
Milo# 
 

To list the directory contents of the Flash memory media in use, enter the dir [device-name] command at the privileged EXEC mode prompt, where device-name can be slot0:, slot1:, or bootflash:.

A sample use of the dir command follows:

Milo# dir
Directory of slot0:/
 
  1  -rw-     122015   Sep 30 1999 15:03:55 myfile1
  2  -rw-    2054979   Sep 30 1999 15:17:33 gsr-diag-mz.RELEASE28
  3  -rw-    6670560   Sep 30 1999 15:22:49 gsr-p-mz.p7
  4  -rw-       5560   Oct 08 1999 16:54:53 fun1
 
20578304 bytes total (9661756 bytes free)
Milo#

To delete a file from a Flash memory media, use the cd command to select the Flash memory media and enter the delete filename command at the privileged EXEC mode prompt, where filename is any file within the selected Flash memory media.

An example of deleting the file fun1 from the current Flash memory directory follows:

Milo# delete slot0:fun1
Milo# dir
Directory of slot0:/
 
  1  -rw-     122015   Sep 30 1999 15:03:55 myfile1
  2  -rw-    2054979   Sep 30 1999 15:17:33 gsr-diag-mz.RELEASE28
  3  -rw-    6670560   Sep 30 1999 15:22:49 gsr-p-mz.p7
 
20578304 bytes total (9661756 bytes free)
Milo#
 

Files that are deleted from the current Flash memory directory are removed from the directory list, but are not erased (they still occupy space in Flash memory). This feature allows you to recover a deleted file later using the undelete command.

To remove deleted files from a Flash memory directory permanently, but leave undeleted files intact, enter the squeeze device-name command at the privileged EXEC mode prompt, where device-name can be slot0:, slot1:, or bootflash:.

The squeeze command permanently removes deleted files and makes all other undeleted files contiguous, thus conserving storage space.

An example of the squeeze command follows:

Milo# squeeze slot0:
All deleted files will be removed, Continue? [confirm]y
Squeeze operation may take a while, Continue? [confirm]y
Squeeze of slot0 complete
Milo# 
ebESZ
 

To prevent loss of data due to sudden power loss, the "squeezed" data is temporarily saved to another Flash memory area reserved specifically for system use.

In the preceding command display output, the character "e" in the last line indicates that the special Flash memory area has been erased. This erase operation must be accomplished before any write operation to the special Flash memory area can begin.

The character "b" indicates that the data about to be written to the special Flash memory area has been temporarily copied.

The character "E" indicates that the sector temporarily occupied by the data has been erased.

The character "S" indicates that the data has been written to its permanent location in Flash memory.

The character "Z" indicates that the log has been erased following the successful squeeze operation.


Note 
During the squeeze operation, the system maintains a log identifying which of the squeeze functions has been accomplished, so that the system can return to the proper place and continue the operation in the event of a power failure.

Enabling Booting from Flash Memory

To enable booting from Flash memory, set the boot field in the software configuration register (bits 3 through 0) to a value between 2 and 15. These values are used with the boot system flash device:filename configuration command, where device is bootflash:, slot0:, or slot1:, and filename is the name of the file from which you want to boot the system.

For more information about setting values in the software configuration register, refer to the section "Configuring the Software Configuration Register" earlier in this chapter.

To enter global configuration mode (while the system is running) and specify a Flash filename from which to boot the system, enter the configure terminal command at the privileged EXEC mode prompt, as follows:

Milo# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Milo(config)# boot system flash device:filename
 

To disable the Break function and enable the boot system flash device:filename command, enter the config-register command at the global configuration mode prompt with the configuration register value, as shown below:

Milo(config)# config-reg 0x0102
Ctrl-Z
Milo#

Copying Files to a Flash Memory Medium

It is a good idea to copy a new Cisco IOS software image to Flash memory when a new image becomes available, or when you want to back up the image.

The information in this section enables you to copy any type of file to the Flash memory SIMM on the GRP or to a PCMCIA Flash memory card inserted in either slot 0 or slot 1.

Caution You cannot copy a new Cisco IOS software image into the onboard Flash memory SIMM (also referred to as bootflash) while the system is running from onboard Flash memory.

Note When you upgrade Cisco IOS software images in Flash memory, do so one image at a time, because it is not good practice to delete all valid images in Flash memory at once. Also, to avoid losing valid Cisco IOS images, you should upgrade PCMCIA-based Flash memory separately from the onboard Flash SIMM (bootflash) on the GRP.

To copy a file to Flash memory, enter the following command at the privileged EXEC mode prompt:

Milo# copy tftp:filename [bootflash:|slot0:|slot1:] filename 
 

where

tftp:filename

Specifies the source and name of the file to be copied.

[bootflash: | slot0: | slot1:] filename

Specifies the destination Flash medium and name for the new file. The destination Flash medium can be one of the following:

bootflash:---Specifies that the file is to be copied to the onboard Flash memory SIMM on the GRP.

slot0:---Specifies that the file is to be copied to the PCMCIA Flash memory card in slot 0.

slot 1:---Specifies that the file is to be copied to the PCMCIA Flash memory card in slot 1.

Typical output generated by a copy tftp:filename command follows:

Milo# copy tftp:myfile1 slot0:myfile1
20575008 bytes available on device slot0, proceed? [confirm]
Address or name of remote host [1.1.1.1]?
Loading new.image from 1.1.1.1 (via Ethernet0):
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![OK - 7799951/15599616 bytes]
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
Milo#
 

In this example, the exclamation points (!!!) appear as the source file is being downloaded to the destination device. The "C" characters indicate that a cyclic redundancy check (CRC) is being calculated during the downloading process. The CRC verifies that the file has been correctly downloaded to the destination device (the Flash memory card inserted in PCMCIA slot 0).

Copying a Cisco IOS Software Image into a Flash Memory Card

You can copy a Cisco IOS software image into a Flash memory card at any time for later use, but you must first format the Flash memory card that you intend to use in the copy operation. If you have not already formatted the card, refer to the "Formatting a Flash Memory Card" section.

The process of copying a Cisco IOS software image assumes the following:

To ensure access to the network TFTP server, you must configure one network interface using the setup command facility. For instructions on using this facility, refer to the "Using Setup for Configuration Changes" section. You can also refer to the Configuration Fundamentals Configuration Guide.

Use the following procedure to copy a bootable image into the Flash memory card:

Step 1 Boot the router and allow it to initialize.

Step 2 Enter the enable command at the user EXEC mode prompt to enter privileged EXEC mode:

Milo> enable
Password: <password>

Milo#

Step 3 Copy the file named new.image in this example to the Flash memory card inserted in PCMCIA slot 0 by using the following command:

Milo# copy tftp:new.image slot0:new.image
20575008 bytes available on device slot0, proceed? [confirm]
Address or name of remote host [1.1.1.1]?
Loading new.image from 1.1.1.1 (via Ethernet0):
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! [OK - 7799951/15599616 bytes] CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC Milo#

In this example, the exclamation points (!!!) appear as the source file is being downloaded (copied) to the destination device. The "C" characters indicate that a CRC is being calculated during the downloading process. The CRC verifies that the file has been correctly copied to the destination device (the Flash memory card inserted in PCMCIA slot 0).

Step 4 Reboot the system.

This completes the procedure for copying a bootable image into a Flash memory card.

Copying Cisco IOS Software Images between Flash Memory Cards

As future releases of Cisco IOS software become available, you will receive these images as a file booted from a network TFTP server, as a file on a floppy disk, or as a file on a Flash memory card.

The procedures in this section tell you how to use a newly released Cisco IOS software image on a Flash memory card in a system that has an older Cisco IOS image residing on a Flash memory card inserted in PCMCIA slot 0 and a default Cisco IOS software boot image stored in the onboard Flash memory SIMM on the GRP.

In this procedure, you will copy an updated Cisco IOS software image from a new Flash memory card onto a Flash memory card containing an old Cisco IOS software image. In this example, the following filenames apply:


Note This procedure assumes that there is sufficient space on the old Flash memory card inserted in slot 0 for both the new Cisco IOS software image and the old image. If there is not enough space for both images on the old Flash memory card, use the delete command to delete files from the old Flash memory card, but do not delete the image.old file. After deleting files, use the squeeze command to remove the deleted files from the old Flash memory card permanently. (For information on the squeeze command, refer to the
"Console Commands Associated with Flash Memory Use" section.)

If the two files still will not fit on the Flash memory card in slot 0 after you delete files and use the squeeze command, remove this card, place it in an antistatic bag for ESD protection, and store it in a safe place. Insert the Flash memory card containing image.new in slot 0. Proceed to Step 5 in the following procedure and enter the command boot system flash slot0:image.new to designate the file image.new as the new default Cisco IOS software boot image.

To copy a bootable Cisco IOS software image between Flash memory cards, follow these steps:

Step 1 Boot the router.

For this example, the file named image.boot is the default boot image.

Step 2 Enter the enable command to enter privileged EXEC mode as follows:

Milo> enable
Password: <password>
Milo# 
 

Step 3 Insert the new Flash memory card in slot 1.

Step 4 Enter the following command to copy the file image.new in slot 1 to the Flash memory card in PCMCIA slot 0.

Milo# copy slot1:image.new slot0:image.new
 

You can also enter this command in the following form to achieve the same result:

Milo# copy slot1:image.new slot0:
 

In the latter case, the name of the file is carried along with the copied image.

Step 5 Enter the following commands to designate the file named image.new in the Flash memory card in slot 0 as the new default system image for boot purposes:

Milo# configure terminal
Milo(config)# no boot system
Milo(config)# boot system flash slot0:image.new
Ctrl-Z
Milo# copy running-config startup-config
Milo# reload
 

When the system reloads, the file image.new is booted from the Flash memory card in slot 0.

This completes the procedure for copying a bootable image between Flash memory cards in the PCMCIA slots.

Copying System Configuration Files Between GRP Memory and a Flash Memory Card

If you do not have access to a TFTP server where you can temporarily store a configuration file, you will need to copy a configuration file to a Flash memory card inserted in PCMCIA slot 0 or slot 1. You can then copy the configuration file back to NVRAM at any time. You can copy either your startup configuration file (from NVRAM) or your running configuration file (from DRAM).

Use the procedures in the following sections to first copy the configuration file from either NVRAM or DRAM to a Flash memory card, and then to copy the configuration file from a Flash memory card back to NVRAM.


Note You cannot copy files directly into DRAM.

To copy a system configuration file, consult the following sections, as appropriate:

Copying a Configuration File from GRP NVRAM to a Flash Memory Card

Use the command copy startup-config [slot0: | slot1:] filename for the copy procedure, where startup-config is the file's source (NVRAM), [slot0: | slot1:] is one of the Flash memory card slots, and filename is the name of the configuration file to be copied. Note that the environmental variable CONFIG_FILE must point to NVRAM (the system default).

To copy a configuration file named myfile2 from the NVRAM on the GRP to a Flash memory card in slot 0, follow these steps:

Step 1 Enter the show bootvar command at the privileged EXEC mode prompt to display the current setting for the environmental variable CONFIG_FILE, as follows:

Milo# show bootvar
.
.
.
CONFIG_FILE variable =
Current CONFIG_FILE variable =
.
.
.
Milo#
 

The absence of any notation following the CONFIG_FILE variable statement in this sample display indicates that the environmental variable is pointing to NVRAM (the system default).

Step 2 To begin the copy operation, enter a copy command in the following form at the privileged EXEC mode prompt:

copy startup-config [slot0: | slot1:]filename
 

where

startup-config

Specifies the source of the file to be copied (NVRAM).

[slot0: | slot1:]filename

Specifies the destination of the file (the Flash memory card in either slot 0 or slot 1) and the name of the new file.

An example of the copy startup-config slot0:filename command follows:

Milo# copy startup-config slot0:myfile2
20575008 bytes available on device slot0, proceed? [confirm]
Address or name of remote host [1.1.1.1]?
Loading new.image from 1.1.1.1 (via Ethernet0):
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 7799951/15599616 bytes]
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
Milo#

Step 3 To further verify that the configuration file was copied correctly to the Flash memory card in slot 0, enter the dir command:

Milo# dir slot0:
-#- -length- -----date/time------ name
1   5200084  May 10 1997 19:24:12 gsr-p-mz.112-8
3   1215     May 10 1997 20:30:52 myfile1
4   6176844  May 10 1997 23:04:10 gsr-p-mz.112-8.1
5   1186     May 10 1997 16:56:50 myfile2
 
9197156 bytes available (11381148 bytes used)
Milo#
 

This completes the procedure for copying a configuration file between GRP NVRAM and a Flash memory card.

Copying a Configuration File from GRP DRAM to a Flash Memory Card

To copy the running configuration file from DRAM to a Flash memory card, follow these steps:

Step 1 Enter the command for copying a running configuration file from DRAM to a Flash memory card. The command takes the following form:

copy running-config [slot0:|slot1:]filename
 

where

running-config

Specifies the source of the file to be copied from DRAM.

[slot0: | slot1:]filename

Specifies the destination of the configuration file to be copied (the Flash memory card inserted in either slot 0 or slot 1) and the name of the new file.

An example of the copy running-config slot0:filename command follows:

Milo# copy running-config slot0:myfile2
20575008 bytes available on device slot0, proceed? [confirm]
Address or name of remote host [1.1.1.1]?
Loading new.image from 1.1.1.1 (via Ethernet0):
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![OK - 7799951/15599616 bytes]
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
Milo#
 

Step 2 To further verify that the file was copied correctly, enter the dir command at the privileged EXEC mode prompt:

Milo# dir slot0:
-#- -length- -----date/time------ name
1   5200084  May 10 1997 19:24:12 gsr-p-mz.112-8
3   1215     May 10 1997 20:30:52 myfile1
4   6176844  May 10 1997 23:04:10 gsr-p-mz.112-8.1
5   1186     May 10 1997 16:56:50 myfile2
 
9197156 bytes available (11381148 bytes used)
Milo#
 

This completes the procedure for copying a running configuration file from the DRAM on the GRP to a Flash memory card.

Copying a Configuration File from a Flash Memory Card to GRP NVRAM

To copy a configuration file from a Flash memory card in PCMCIA slot 0 or slot 1 to NVRAM, follow these steps:

Step 1 Enter the command for copying a configuration file from a Flash memory card to NVRAM. This command takes the following form:

copy [slot0:|slot1:]filename startup-config
 

where

[slot0: | slot1:]filename

Specifies the source of the configuration file to be copied (the Flash memory card inserted in either PCMCIA slot 0 or slot 1) and the name of the new file.

startup-config

Specifies the destination (NVRAM) of the file to be copied.

To initiate the copy operation, enter the following command at the privileged EXEC mode prompt:

Milo# copy slot0:myfile startup-config 
[ok]
Milo#
 

Step 2 Use the following command to ensure that the startup configuration file, now stored in NVRAM, is designated as the default running configuration file for the system:

Milo# copy startup-config running-config
Milo#
%SYS-5-CONFIG_I: Configured from memory by console
Milo#
 

This completes the procedure for copying a configuration file from the Flash memory card to NVRAM.

Recovering from Locked Blocks in Flash Memory Cards

A locked block in Flash memory cards occurs when power is lost or a Flash memory card is removed from its PCMCIA slot on the GRP during a write or erase operation.

When a block of Flash memory is locked, it cannot be written to or erased. Any attempt at such an operation will consistently fail at the blocked location. The only way to recover from locked blocks in a Flash memory card is to reformat the Flash memory card using the format command.

Caution Formatting a Flash memory card erases all existing data on the card.

What To Do Next?

After you have installed the Cisco 12016 GSR hardware, checked all external connections, turned on the system power, allowed the system to boot up, and minimally configured the system, you might need to perform additional configuration tasks.

For more detailed information about configuring the router and its interfaces, refer to the publications listed in the following section.

If You Need More Information

The Cisco IOS software running your router contains extensive features and functionality. For information on Cisco IOS software and general installation and maintenance information for your router, use the following resources:

Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM, a member of the Cisco Connection Family, is updated monthly; therefore, it might be more up to date than printed documentation. To order additional copies of the Documentation CD-ROM, contact your local sales representative or call customer service. The CD-ROM package is available as a single package or as an annual subscription.


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Posted: Mon Jun 5 13:39:42 PDT 2000
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