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You can configure and maintain the Catalyst 5000 series Ethernet, Fast Ethernet, Gigabit Ethernet, CDDI, FDDI, and Token Ring modules by entering commands from the switch CLI. The CLI is a basic command-line interpreter similar to the UNIX C shell. Using the CLI session command, you can access the router configuration software and perform tasks such as history substitution and alias creation.
To configure the ATM module, you must use the ATM module CLI. For more information about the ATM module CLI, refer to the "ATM Command-Line Interface" chapter.
You can access the switch CLI from a console terminal connected to an EIA/TIA-232 port or through a Telnet session. The CLI allows fixed baud rates. Telnet sessions automatically disconnect after remaining idle for a user-defined time period.
To access the switch through the console (EIA/TIA-232) port, perform these steps:
| Task | Command |
|---|---|
| Step 1 From the Cisco Systems Console prompt, press Return. | |
| Step 2 At the prompt, enter the system password. The Console> prompt indicates that you have accessed the CLI in normal mode. | <password> |
| Step 3 Enter the necessary commands to complete your desired tasks. | Appropriate commands |
| Step 4 When finished, exit the session. | quit |
After connecting through the console port, you see this display:
Cisco Systems Console Enter password: Console> Console>
To access the switch through a Telnet session, you must first set the IP address for the switch. You can open multiple sessions to the switch via Telnet.
To access the switch from a remote host with Telnet, perform these steps:
| Task | Command |
|---|---|
| Step 1 From the remote host, enter the telnet command and the name or IP address of the switch you want to access. | telnet {hostname | ip_addr} |
| Step 2 At the prompt, enter the password for the CLI. If no password has been configured, press Return. | <password> |
| Step 3 Enter the necessary commands to complete your desired tasks. | Appropriate commands |
| Step 4 When finished, exit the Telnet session. | quit |
After entering the telnet command, you see this display:
host% telnet cat5000-1.cisco.com Trying 172.16.44.30 ... Connected to cat5000-1. Escape character is '^]'. Cisco Systems Console Enter password:<password>Console>
This section describes how to access the command modes and operate the switch CLI.
The CLI has two modes of operation: normal and privileged. Both are password-protected. Use normal-mode commands for everyday system monitoring. Use privileged commands for system configuration and basic troubleshooting.
After you log in, the system enters normal mode, which gives you access to normal-mode commands only. You can enter privileged mode by entering the enable command followed by the password. Privileged mode is indicated by the word "(enable)" in the system prompt. To return to normal mode, enter the disable command at the prompt.
This example shows how to enter privileged mode:
Console> enable
Enter password: <password>
Console> (enable)
Switch commands are not case sensitive. You can abbreviate commands and parameters as long as they contain enough letters to be different from any other currently available commands or parameters.
Table 2-1 shows special keystrokes used for command-line processing:
| Keystroke | Function |
|---|---|
| Ctrl-W | Deletes last word typed. |
| Ctrl-U | Deletes entire line. |
| Ctrl-C | Escapes and terminates prompts and lengthy tasks. |
| Delete key or backspace key | Erases mistake when entering a command; reenter command after using this key. |
Table 2-2 lists command aliases. Like regular commands, aliases are not case sensitive. However, unlike regular commands, some aliases cannot be abbreviated.
| Alias | Command |
|---|---|
| ? | help |
| batch | configure |
| di | show |
| earl | cam |
| exit | quit |
| logout | quit |
Commands that you enter during each terminal session are stored in a history buffer. The history buffer stores the last 20 commands entered during a terminal session. History substitution allows you to access these commands without retyping them, by using special abbreviated commands. Table 2-3 lists the history substitution commands.
| Command | Function |
|---|---|
| Repeating recent commands: | |
| !! | Repeat the most recent command. |
| !-nn | Repeat the nnth most recent command. |
| !nn | Repeat command nn. |
| !aaa | Repeat the command beginning with string aaa. |
| !?aaa | Repeat the command containing the string aaa. |
| To modify and repeat the most recent command: | |
| ^aaa^bbb | Replace the string aaa with the string bbb in the most recent command. |
| To add a string to the end of a previous command and repeat it: | |
| !!aaa | Add string aaa to the end of the most recent command. |
| !nn aaa | Add string aaa to the end of command nn. |
| !aaa bbb | Add string bbb to the end of the command beginning with string aaa. |
| !?aaa bbb | Add string bbb to the end of the command containing the string aaa. |
To see a list of top-level commands and command categories, type help or ? in normal or privileged mode. Context-sensitive help (usage and syntax information) for individual commands can be seen by appending help or ? to any specific command. If you enter a command using the wrong number of arguments or inappropriate arguments, usage and syntax information for that command is displayed. Additionally, appending help or ? to a command category displays a list of commands in that category.
In normal mode, use the ? command to display a list of top-level commands and command categories. The example below displays the top-level commands and categories when your system is equipped with a Supervisor Engine I or II module:
Console> ?
Commands:
----------------------------------------------------------------------
enable Enable privileged mode
help Show this message
history Show contents of history substitution buffer
ping Send echo packets to hosts
quit Exit from the Admin session
session Tunnel to ATM or Router module
set Set, use 'set help' for more info
show Show, use 'show help' for more info
wait Wait for x seconds
Console>
This example displays the top-level commands and categories when your system is equipped with a Supervisor Engine III module running the applicable software image, for example, cat5000-sup3.4-1-1.bin:
Console> ?
Commands:
----------------------------------------------------------------------
cd Set default flash device
dir Show list of files on flash device
enable Enable privileged mode
help Show this message
history Show contents of history substitution buffer
ping Send echo packets to hosts
pwd Show default flash device
quit Exit from the Admin session
session Tunnel to ATM or Router module
set Set, use 'set help' for more info
show Show, use 'show help' for more info
traceroute Trace the route to a host
verify Verify checksum of file on flash device
wait Wait for x seconds
whichboot Which file booted
Console>
Console> (enable) ?
Commands:
----------------------------------------------------------------------
clear Clear, use 'clear help' for more info
configure Configure system from terminal/network
disable Disable privileged mode
disconnect Disconnect user session
download Download code to a processor
enable Enable privileged mode
help Show this message
history Show contents of history substitution buffer
ping Send echo packets to hosts
quit Exit from the Admin session
reconfirm Reconfirm VMPS
reset Reset system or module
session Tunnel to ATM or Router module
set Set, use 'set help' for more info
show Show, use 'show help' for more info
slip Attach/detach Serial Line IP interface
switch Switch to standby <clock|supervisor>
telnet Telnet to a remote host
test Test, use 'test help' for more info
upload Upload code from a processor
wait Wait for x seconds
write Write system configuration to terminal/network
Console> (enable)
Console> (enable) ?
Commands:
----------------------------------------------------------------------
cd Set default flash device
clear Clear, use 'clear help' for more info
configure Configure system from network
copy Copy files between TFTP/module/flash devices
delete Delete a file on flash device
dir Show list of files on flash device
disable Disable privileged mode
disconnect Disconnect user session
download Download code to a processor
enable Enable privileged mode
format Format a flash device
help Show this message
history Show contents of history substitution buffer
ping Send echo packets to hosts
pwd Show default flash device
quit Exit from the Admin session
reconfirm Reconfirm VMPS
reload Force software reload to linecard
reset Reset system or module
session Tunnel to ATM or Router module
set Set, use 'set help' for more info
show Show, use 'show help' for more info
slip Attach/detach Serial Line IP interface
squeeze Reclaim space used by deleted files
switch Switch to standby <clock|supervisor>
telnet Telnet to a remote host
test Test, use 'test help' for more info
traceroute Trace the route to a host
undelete Undelete a file on flash device
upload Upload code from a processor
verify Verify checksum of file on flash device
wait Wait for x seconds
whichboot Which file booted
write Write system configuration to terminal/network
Console> (enable)
Usage and syntax information for individual commands can be seen by appending help or ? to any specific command.
On some commands (such as clear, set, and show), typing help or ? after the command provides a list of commands in that category. For example, this display shows how to list available clear commands:
Console> (enable) clear help Clear commands: ---------------------------------------------------------------------------- clear alias Clear aliases of commands clear arp Clear ARP table entries clear banner Clear Message Of The Day banner clear boot Clear booting environment variable clear cam Clear CAM table entries clear cgmp Clear CGMP statistics clear config Clear configuration and reset system clear counters Clear MAC and Port counters clear drip Clear DRiP statistics clear help Show this message clear igmp Clear IGMP statistics clear ip Clear IP, use 'clear ip help' for more info clear log Clear log information clear logging Clear system logging information clear multicast Clear multicast router port clear netflow Clear netflow information clear ntp Clear NTP servers and timezone clear port Clear port features clear snmp Clear SNMP trap receiver address clear spantree Clear spantree parameters clear tacacs Clear TACACS server host/key clear timezone Clear timezone clear top Clear TopN report clear trunk Clear trunk ports clear vlan Clear a VLAN clear vmps Clear VMPS information clear vtp Clear VTP statistics
The Catalyst 5000 series switch is a multimodule system. Commands you enter from the CLI can apply to the entire system or to a specific module, port, or VLAN.
The Catalyst 5000 series modules (module slots), ports, and VLANs are numbered starting with 1. The supervisor module is module 1, residing in the top slot. If you are using a Catalyst 5505 or a Catalyst 5500 with a redundant supervisor engine, the supervisor modules reside in slots 1 and 2. On each module, port 1 is the left-most port. To reference a specific port on a specific module, the command syntax is mod_num/port_num. For example, 3/1 denotes module 3, port 1. In some commands, such as set trunk, set cam, and set vlan, you can enter lists of ports and VLANs.
You can designate ports by entering the module and port number pairs, separated by commas. To specify a range of ports, use a dash (-) between the module number and port number pairs. Dashes take precedence over commas. The following examples show several ways of designating ports:
Example 1: 2/1,2/3 denotes module 2, port 1 and module 2, port 3.
Example 2: 2/1-12 denotes module 2, ports 1 through 12.
Example 3: 2/1-2/12 also denotes module 2, ports 1 through 12.
Each VLAN is designated by a single number. You can specify lists of VLANs the same way you do for ports. Individual VLANs are separated by commas (,); ranges are separated by dashes (-). In the following example, VLAN numbers 1 through 10 and VLAN 1000 are specified:
1-10,1000
Some commands require a MAC address, IP address, or IP alias, which you must designate in a standard format. The MAC address format must be six hexadecimal numbers separated by hyphens, as shown in the following example:
00-00-0c-24-d2-fe
The IP address format is 32 bits, written as four octets separated by periods (dotted decimal format). IP addresses are made up of a network section, an optional subnet section, and a host section, as shown in the following example:
126.2.54.1
If the IP alias table is configured, you can use IP aliases in place of the dotted decimal IP address. This is true for most commands that use an IP address, except commands that define the IP address or IP alias. For more information about the set interface and set ip alias commands, refer to the "Switch set Commands" chapter.
The ROM monitor is a ROM-based program that executes upon platform power-up, reset, or when a fatal exception occurs. The system enters ROM monitor mode if the switch does not find a valid system image, if the NVRAM configuration is corrupted, or if the configuration register is set to enter ROM monitor mode. From the ROM monitor mode, you can manually load a system image from Flash memory, from a network server file, or from bootflash.
You can also enter ROM monitor mode by restarting the switch and then pressing the Break key during the first 60 seconds of startup.
For connection through a terminal server, you can escape to the Telnet prompt and enter the send break command to break back to the ROM monitor mode.
For ROM monitor command descriptions, refer to the "ROM Monitor Commands" chapter.
The manual boot command has the following syntax:
Once you are in ROM monitor mode, the prompt changes to rommon #>.
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