Specifications

Second-Generation Fast Ethernet Interface Processor (FEIP2) Installation and Configuration 33
Configuring the Fast Ethernet Interfaces
Step 4 Add any additional configuration subcommands required to enable routing protocols and
set the interface characteristics.
Step 5 Change the shutdown state to up and enable the interface as follows:
Router(config-int)# no shutdown
Step 6 Configure additional FE interfaces as required.
Step 7 When you have included all of the configuration subcommands to complete the
configuration, press Ctrl-Z to exit configuration mode.
Step 8 Write the new configuration to nonvolatile memory as follows:
Router# copy running-config startup-config
[OK]
Router#
Following are descriptions and examples of the commands for configuring FE interface 3/0/0.
Descriptions are limited to fields that are relevant for establishing and verifying the configuration.
After configuring the new FE interface, use show commands to display the status of the new
interface or all interfaces, or to verify changes you have made.
Depending on the requirements for your system configuration and the protocols you plan to route on
the interface, you might also need to enter other configuration subcommands. For complete
descriptions of configuration subcommands and the configuration options available for FE
interfaces, refer to the publications listed in the section “If You Need More Information” on page 2.
FE half-duplex operation is the default. To change to full-duplex operation, use the following series
of commands:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#
Router(config)# interface fastethernet 3/0/0
Router(config-if)# full-duplex
Ctrl-z
Router#
Note Each FE interface on an FEIP2 can be configured at 100 Mbps, half duplex, for a maximum
aggregate bandwidth of 200 Mbps per pair. Each FE interface on an FEIP2 can also be configured
at 200 Mbps, full duplex, for a maximum aggregate bandwidth of 400 Mbps per pair. Further, one
FE interface can be configured at 100 Mbps, half duplex, while the other FE interface can be
configured at 200 Mbps, full duplex, for a maximum aggregate bandwidth of 300 Mbps per pair.