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Configuring the Interfaces
Using the Configure Command
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 Token Ring,
refer to the Router Products Configuration Guide and Router Products Command Reference
publications.
The system banner and a list of all installed interfaces, including those you just installed, should be
displayed. (See page 6 for an example of this display, which is the same as the output from the show
version command.) If this information is not displayed, return to the section "Installing Long
Ground Straps" on page 24 and perform the steps to isolate the problem.
You must enter the privileged level of the EXEC in order to use the configure command. After
specifying an interface, you will enter the configuration information with interface subcommands.
Before beginning this procedure, use the show interfaces command to determine which interfaces
you need to configure.
The show configuration EXEC command displays the configuration information stored in
nonvolatile memory. Before entering any new interface information, you may want to use this
command to review the current configuration. The following example shows a partial display of the
show configuration command output:
In configuration mode, you identify the specific interface to be configured with the interface
configuration command, which begins the configuration subcommand collection mode for the
specified interface. The syntax is interface type unit, where type identifies the type of interface (such
as Token Ring), and unit identifies the interface unit address. Then you enter the configuration
subcommands that define the specific configuration for the interface. For example, new interfaces
are shut down by default; you must enable each one with the no shutdown interface subcommand.
You need other interface subcommands to assign the ring speed (4 or 16 Mbps) to each interface,
specify encapsulation methods, and define routing protocols. The speed of each Token Ring
interface must be configured before you bring the interface up and insert it into the ring. The
interfaces are independent and can be configured for different speeds. There is no factory default
30 ciscoBus Token Ring Card and Applique Installation and Upgrade Instructions
router# show config
Using 2648 out of 65536 bytes
version 9.1
!
hostname router
!
enable-password secretword
!
(display text omitted)
!
interface TokenRing 0
ip address 131.108.8.35 255.255.255.0
ip helper-address 131.108.7.255
ip helper-address 131.108.9.255
ring-speed 4
appletalk cable-range 4035-4035 4035.8
appletalk zone Engineering
!
interface TokenRing 1
no ip address
shutdown
!
(remainder of display text omitted)
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