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Cisco 7304 6-Port Clear Channel E3 Line Card Installation and Configuration
OL-5061-01
Chapter 4 Configuring the 6E3 Line Card
Configuring the Interfaces
Performing a Basic Configuration
Following are instructions for a basic configuration: enabling an interface 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 for serial interfaces, refer to the
appropriate software documentation.
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 Enter configuration mode and specify that the console terminal is 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 Specify the first interface to configure by entering the interface serial subcommand, followed by the
interface address of the interface you plan to configure. Table 4-3 provides an example.
Step 3 Assign an IP address and subnet mask to the interface (if IP routing is enabled on the system) by using
the ip address subcommand, as in the following example:
Router(config-if)# ip address 10.0.0.0 10.255.255.255
Step 4 Add any additional configuration subcommands required to enable routing protocols and set the
interface characteristics.
Step 5 Reenable the interfaces using the no shutdown command. (See the “Shutting Down an Interface” section
on page 4-2.)
Step 6 Configure all additional line card interfaces as required.
Step 7 After including all of the configuration subcommands to complete your configuration, press
Ctrl-Z—hold down the Control key while you press Z—or enter end or exit to exit configuration mode
and return to the EXEC command interpreter prompt.
Step 8 Write the new configuration to NVRAM as follows
Router# copy running-config startupup-config
[OK]
Router#
This completes the procedure for creating a basic configuration.
Table 4-3 Examples of the interface serial Subcommand
Platform Command Example
Cisco 7304 router interface serial, followed by
slot/port (slot-number/
interface-port-number)
The example is for the first interface of a 6E3 line card in slot 4.
Router(config)# interface
serial 4/0
Router(config-if)#
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