Adding A Description For An Interface; Understanding Online Insertion And Removal - Cisco 7604 Configuration Manual

Understanding Online Insertion and Removal

Adding a Description for an Interface

You can add a description about an interface to help you remember its function. The description appears
in the output of the following commands: show configuration
interfaces.
To add a description for an interface, perform this task:
Command
Router(config-if)# description string
Router(config-if)# no description
This example shows how to add a description on Fast Ethernet port 5/5:
Router(config)# interface fastethernet 5/5
Router(config-if)# description Channel-group to "Marketing"
Understanding Online Insertion and Removal
The online insertion and removal (OIR) feature supported on the Cisco 7600 series routers allows you
to remove and replace modules while the system is online. You can shut down the modules before
removal and restart it after insertion without causing other software or interfaces to shut down.
Do not remove or install more than one module at a time. After you remove or install a module, check
Note
the LEDs before continuing. For module LED descriptions, refer to the Cisco 7600 Series Router
Installation Guide.
When a module has been removed or installed, the Cisco 7600 series router stops processing traffic for
the module and scans the system for a configuration change. Each interface type is verified against the
system configuration, and then the system runs diagnostics on the new module. There is no disruption
to normal operation during module insertion or removal.
The router can bring only an identical replacement module online. To support OIR of an identical
module, the module configuration is not removed from the running-config file when when you remove
a module.
If the replacement module is different from the removed module, you must configure it before the router
can bring it online.
Layer 2 MAC addresses are stored in an EEPROM, which allows modules to be replaced online without
requiring the system to update switching tables and data structures. Regardless of the types of modules
installed, the Layer 2 MAC addresses do not change unless you replace the supervisor engine. If you do
replace the supervisor engine, the Layer 2 MAC addresses of all ports change to those specified in the
address allocator on the new supervisor engine.
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
9-16
,
show running-config
Purpose
Adds a description for an interface.
Deletes a description from an interface.
Chapter 9 Configuring Interfaces
,
and show
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