Table of Contents

Using the EXEC Command Interpreter
Identifying Interface Numbers and Addresses

Cisco 7100 Series Ports

Shutting Down an Interface
Performing a Basic Configuration
Checking the Configuration

Using show Commands to Verify the New Interface Status
Using the ping Command

Configuring the PA-4B-U Interfaces

To continue your PA-4B-U port adapter installation, you must configure the PA-4B-U interfaces. The instructions that follow apply to all supported platforms. Minor differences between the platforms are noted. This chapter contains the following sections:

• If you installed a new PA-4B-U or if you want to change the configuration of an existing interface, you must use the privileged-level configure command. If you replaced a PA-4B-U that was previously configured, the system will recognize the new PA-4B-U interfaces and bring each of them up in their existing configuration.

• Using the EXEC Command Interpreter

• Shutting Down an Interface

• Performing a Basic Configuration

• Checking the Configuration

If you installed a new PA-4B-U or if you want to change the configuration of an existing interface, you must use the privileged-level configure command. If you replaced a PA-4B-U that was previously configured, the system will recognize the new PA-4B-U interfaces and bring each of them up in their existing configuration.

• Protocols and encapsulations you plan to use on the new interfaces

• Protocol specific information, such as IP addresses if you will configure the interfaces for IP routing

• The ISDN switch type (Table 6-1 lists ISDN service provider switch types)

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Note Configuration commands are executed from the privileged level of the EXEC command interpreter, which usually requires password access. See the "Using the EXEC Command Interpreter" section and contact your system administrator, if necessary, to obtain access.

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Table 6-1: ISDN Service Provider Switch Types

Keywords by Area	Switch Type
Australia basic-ts013	Australian TS013 switches
Europe basic-1tr6 basic-nwnet3 basic-net3 basic-net5 primary-net5 vn2 vn3	German 1TR6 ISDN switches Norwegian NET3 ISDN switches (phase 1) NET3 ISDN switches (UK, Denmark, and other nations);   covers the Euro-ISDN E-DSSI signaling system) NET5 switches (UK and Europe) European ISDN PRI switches (UK and Europe) French VN2 ISDN switches French VN3 ISDN switches
Japan ntt primary-ntt	Japanese NTT ISDN switches Japanese ISDN PRI switches
North America basic-5ess basic-dms100 basic-ni1 primary-4ess primary-5ess primary-dms100	AT&T basic rate switches NT DMS-100 basic rate switches National (North American) ISDN-1 switches AT&T 4ESS switch type for the U.S. (ISDN PRI only) AT&T 5ESS switch type for the U.S. (ISDN PRI only) NT DMS-100 switch type for the U.S. (ISDN PRI only)
New Zealand basic-nznet3	New Zealand NET3 switches

For complete descriptions of interface subcommands and the configuration options available for Cisco 7200 series and Cisco 7100 series-related interfaces, refer to the publications listed in the section "Related Documentation" section.

Using the EXEC Command Interpreter

You can modify the configuration of your router through the software command interpreter called the EXEC. You must enter the privileged level of the EXEC command interpreter with the enable command before you can use the configure command to configure a new interface or to change the existing configuration of an interface. The system prompts you for a password if one has been set.

The system prompt for the privileged level ends with a pound sign (#) instead of an angle bracket (>). At the console terminal, use the following procedure to enter the privileged level:

Step 1 At the user-level EXEC prompt, enter the enable command. The EXEC prompts you for a privileged-level passwords:

Router> enable

Password:

Step 2 Enter the password (the password is case-sensitive). For security purposes, the password is not displayed.

When you enter the correct password, the system displays the privileged-mode system prompt (#):

Router#
 

Proceed to the following section to configure the new interfaces.

Identifying Interface Numbers and Addresses

This section describes how to identify port adapter slot and port adapter port numbers.

Physical port addresses specify the actual physical location of each interface port on the router. (See Figure 6-1.) This address is composed of a two-part number format port adapter slot number/interface port number, as follows:

• The first number identifies the chassis slot in which the PA-4B-U is installed.

• The second number identifies the interface ports on each PA-4B-U, which are always numbered in sequence as interface 0 through 3.

Interface ports on the PA-4B-U maintain the same address regardless of whether other port adapters are installed or removed. However, when you move a port adapter to a different slot, the first number in the address changes to reflect the new slot number.

In Cisco 7200 series routers, port adapter slots are numbered from the lower left to the upper right, beginning with port adapter slot 1 and continuing through port adapter slot 2 for the Cisco 7202, slot 4 for the Cisco 7204 and Cisco 7204VXR, and slot 6 for the Cisco 7206 and Cisco 7206VXR. Port adapter slot 0 is reserved for the optional Fast Ethernet port on the I/O controller---if present. Figure 6-1 shows the interface ports of an PA-4B-U in slot 1 of a Cisco 7206 router.

For example, the addresses of the interface ports on the PA-4B-U in chassis slot 1 are 1/0 through 1/3 (chassis slot 1 and interface ports 0 through 3). If the PA-4B-U was in port adapter slot 4, these same interface ports would be numbered 4/0 through 4/3.

Cisco 7100 Series Ports

In Cisco 7100 series routers, the slot number is the location in the chassis where the interface resides and the port number is the physical port. Interfaces in the Cisco IOS software are identified by a type, slot number, and port number. For example, serial 3/1 indicates port 1 on the serial port adapter in slot 3.

Slots in Cisco 7120 series routers are numbered as shown in Figure 6-2. The fixed LAN interface is slot 0, the fixed WAN interface is slot 1, and the modular port adapter interface is slot 3. On the Cisco 7120 series, slots 2 and 4 are not used. Slot 5 is the service adapter.

Slots in the Cisco 7140 series are numbered as shown Figure 6-3. The fixed LAN interface is slot 0, the fixed WAN interfaces are slots 1 and 2, and the modular port adapter interface is slot 4. Slot 3 is not used. Slot 5 is the service adapter.

Shutting Down an Interface

Before you replace an interface cable, replace port adapters, or remove an interface that you will not replace, use the shutdown command to shut down (disable) the interfaces. Doing so prevents anomalies from occurring when you reinstall the new or reconfigured port adapters. When you shut down an interface, it is designated administratively down in the show command displays.

Follow these steps to shut down an interface:

Step 1 Enter the privileged level of the EXEC command interpreter. (See the "Using the EXEC Command Interpreter" section for instructions.)

Step 2 At the privileged-level prompt, enter configuration mode and specify that the console terminal will be the source of the configuration subcommands as follows:

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

Step 3 Specify the slot/port address of the controller that you want shut down by entering the subcommand interface, followed by the type (bri) and port adapter slot number/interface port number. The example that follows is for a PA-4B-U in port adapter slot 1:

Router(config)# interface bri 1/0
 

Step 4 Enter the shutdown command as follows:

For complete descriptions of software configuration commands, refer to the publications listed in the "Related Documentation" section.

Performing a Basic Configuration

Following are instructions for a basic configuration: enabling a controller and specifying IP routing. You might also need to enter other configuration subcommands depending on the requirements for your system configuration and the protocols you plan to route on the interface. For complete descriptions of configuration subcommands and the configuration options available, refer to the publications listed in the "Related Documentation" section.

In the following procedure, press the Return key after each step unless otherwise noted. At any time you can exit the privileged level and return to the user level by entering disable at the prompt as follows:

Router# disable
 
Router>

Step 1 At the privileged-level prompt, enter configuration mode and specify that the console terminal will be the source of the configuration subcommands as follows:

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

Step 2 Identify the ISDN switch type. In the following example, the switch basic-net3 (a switch for the European Union) is identified as the switch type:

Router(config)# isdn switch-type basic-net3

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Note The ISDN switch type that you identify is for all BRI interface ports installed in a Cisco 7200 series router.

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Step 3 At the prompt, specify the first interface to configure by entering the subcommand interface, followed by the type (bri), and port adapter slot number/interface port number. The example that follows is for the PA-4B-U in port adapter slot 1, interface port 1:

Router(config)# interface bri 1/1
 

Step 4 At the prompt, assign an IP address and subnet mask to the interface with the ip address configuration subcommand as in the following example:

Router(config-int)# ip address 10.10.10.1 255.255.255.0 
Router(config-int)#
 

Step 5 Add any additional configuration subcommands required to enable routing protocols and adjust the interface characteristics.

Step 6 Use the no shutdown command to reenable the interfaces. See the "Shutting Down an Interface" section for no shutdown command examples.

Step 7 After including all of the configuration subcommands, to complete the configuration, enter Ctrl-Z (hold down the Control key while you press Z) or enter end to exit configuration mode.

Step 8 Write the new configuration to memory as follows:

Router# copy running-config startup-config
 

The system displays an OK message when the configuration is stored.

Step 9 Exit the privileged level and return to the user level by entering disable at the prompt as follows:

Router# disable
 
Router>
 

This completes the procedure for creating a basic configuration. Proceed to the next section to check the interface configuration using show commands. For additional information about configuring ISDN BRI interfaces, refer to the publications Wide-Area Networking Configuration Guide and Wide-Area Networking Command Reference.

Checking the Configuration

After configuring the new interface, use the show commands to display the status of the new interface or all interfaces, and use the ping command to check connectivity.

Using show Commands to Verify the New Interface Status

Take the following steps to verify that the new interfaces are configured and operating correctly:

Step 1 Display the system hardware configuration with the show version command. Ensure that the list includes the new BRI interfaces.

Step 2 Specify one of the new BRI interfaces with the show interfaces type port adapter slot/interface port number command and verify that the first line of the display specifies the interface with the correct slot number. Also verify that the interface and line protocol are in the correct state: up or down.

Step 3 Display all ISDN interfaces installed in the router and the ISDN switch type for the interfaces with the show isdn status command. Ensure that the correct ISDN switch type is displayed for the installed ISDN interfaces.

Step 4 Display the protocols configured for the entire system and specific interfaces with the show protocols command. If necessary, return to configuration mode to add or remove protocol routing on the system or specific interfaces.

Step 5 Display the running configuration file with the show running-config command. Display the configuration stored in NVRAM using the show startup-config command. Verify that the configuration is accurate for the system and each interface.

If the interface is down and you configured it as up, or if the displays indicate that the hardware is not functioning properly, ensure that the network interface is properly connected and terminated. If you still have problems bringing up the interface, contact a customer service representative for assistance.

To display information about a specific interface, use the show interfaces command with the interface type, port adapter slot and interface port in the format show interfaces [type port adapter slot/interface port].

The following example of the show interfaces bri port adapter slot number/interface port number command shows all of the information specific to the first PA-4B-U interface port (interface port 0) in port adapter slot 1:

Router# show interfaces bri 1/0
BRI1/0 is administratively down, line protocol is down
Hardware is BRI
  MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, rely 255/255, load 1/255
  Encapsulation HDLC, loopback not set
  Last input never, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0 (size/max/drops); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/64/0 (size/threshold/drops)
     Conversations  0/0 (active/max active)
     Reserved Conversations 0/0 (allocated/max allocated)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions
 

The show version (or show hardware) command displays the configuration of the system hardware (the number of each interface type installed), the software version, the names and sources of configuration files, and the running images. Following is an example of the show version command:

Router# show version
 
Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-J-M), Version 11.1(9)CA1
Copyright (c) 1986-1996 by cisco Systems, Inc.
Compiled Sun 04-Aug-96 06:00 by rmontino
Image text-base: 0x600088A0, data-base: 0x605A4000
 
ROM: System Bootstrap, Version 11.1(5) RELEASED SOFTWARE
ROM: 7200 Software (C7200-BOOT-M), RELEASED SOFTWARE 11.1(9)CA1
 
Router uptime is 4 hours, 22 minutes
System restarted by reload
System image file is "c7200-j-mz", booted via slot0
 
cisco 7206 (NPE150) processor with 12288K/4096K bytes of memory.
R4700 processor, Implementation 33, Revision 1.0 (Level 2 Cache)
Last reset from power-on
Bridging software.
X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.
Basic Rate ISDN software, version 1.0.
Chassis Interface.
12 Ethernet/IEEE 802.3 interfaces.
1 FastEthernet/IEEE 802.3 interface.
4 ISDN Basic Rate interfaces.
1 Compression port adapter.
Integrated NT1s for 4 ISDN Basic Rate interfaces
125K bytes of non-volatile configuration memory.
1024K bytes of packet SRAM memory.
 
20480K bytes of Flash PCMCIA card at slot 0 (Sector size 128K).
8192K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x2
 

Router# show isdn status
The current ISDN Switchtype = basic-5ess
ISDN BRI1/0 interface
    Layer 1 Status:
        ACTIVE
    Layer 2 Status:
        TEI = 94, State = MULTIPLE_FRAME_ESTABLISHED
    Layer 3 Status:
        1 Active Layer 3 Call(s)
    Activated dsl 0 CCBs = 1
        CCB:callid=8001, sapi=0, ces=1, B-chan=1
ISDN BRI1/1 interface
    Layer 1 Status:
        DEACTIVATED
    Layer 2 Status:
        Layer 2 NOT Activated
    Layer 3 Status:
        No Active Layer 3 Call(s)
    Activated dsl 1 CCBs = 0
(Display text omitted.)
 

Router# show diag 1
 
Slot 1:
        BRI (U) port adapter, 4 ports
        Port adapter is analyzed
        Port adapter insertion time 02:42:18 ago
        Hardware revision 1.0           Board revision UNKNOWN
        Serial number     4294967295    Part number    255-65535-255
        Test history      0xFF          RMA number     255-255-255
        EEPROM format version 1
        EEPROM contents (hex):
          0x20: 01 22 01 00 FF FF FF FF FF FF FF FF FF FF FF FF
          0x30: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
 

For command descriptions and examples for the Cisco 7200 series routers, refer to the publications listed in the "Related Documentation" section.

Using the ping Command

The packet internet groper (ping) command allow you to verify that an interface port is functioning properly after the system has booted successfully and is operational.

The ping command sends echo request packets out to a remote device at an IP address that you specify. After sending an echo request, the command waits a specified time for the remote device to reply. Each echo reply is displayed as an exclamation point (!) on the console terminal; each request that is not returned before the specified timeout is displayed as a period (.). A series of exclamation points (!!!!!) indicates a good connection; a series of periods (.....) or the messages [timed out] or [failed] indicate that the connection failed.

Following is an example of a successful ping command to a remote server with the address 10.10.10.1:

Router# ping 10.10.10.1 <Return>
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echoes to 10.10.10.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/15/64 ms
Router#
 

If the connection fails, verify that you have the correct IP address for the destination and that the device is active (powered on), and repeat the ping command.

For complete descriptions of interface subcommands and the configuration options available for Cisco 7200 series or Cisco 7100 series-related interfaces, refer to the publications listed in the "Related Documentation" section.

Posted: Wed May 26 13:28:28 PDT 1999
Copyright 1989-1999©Cisco Systems Inc.