Specifications

Input/Output Controller Replacement Instructions 11

Installation Prerequisites

The default transmission mode for the Fast Ethernet port on the I/O controller is half-duplex. Use

the full-duplex command to change the Fast Ethernet port’s transmission mode, and use the show

interfaces command to verify the change as follows:

Router# config t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)# interface fastethernet 0/0

Router(config-if)# full-duplex

Router(config-if)# no shutdown

Router(config-if)# exit

Router(config)#

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed

state to up

%LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up

Router# sh interface fastethernet 0/0

FastEthernet0/0 is administratively up, line protocol is up

(display text omitted)

Encapsulation ARPA, loopback not set, keepalive not set, fdx, 100BaseTX

(display text omitted)

Use the no full-duplex command to return the Fast Ethernet port on the I/O controller to half-duplex

transmission mode.

Note In a Cisco 7206 router shelf, the interface speciﬁed in the above examples would include a

shelf number. For example, the command interface fastethernet 5/0/0 would specify the Fast

Ethernet interface on the I/O controller (slot 0) in Cisco 7206 router shelf 5. For information about

the Cisco AS5800 Universal Access Server router shelf, refer to the Cisco AS5800 Universal Access

Server documentation listed in the “If You Need More Information” section on page 2.

Note Certain Cisco hardware products have incorporated a hardware change, which for most users,

is transparent. However, an anomaly has been identiﬁed when this updated Cisco hardware is used

in conjunction with certain releases of Cisco IOS software. (See the “Troubleshooting Using the

show interfaces fastethernet Command” section on page 37 for an explanation of this anomaly and

a workaround procedure.)

Installation Prerequisites

This section provides a list of parts and tools you need to remove and replace the I/O controller in

the Cisco 7200 series routers or Cisco uBR7200 series routers. This section also includes safety and

ESD-prevention guidelines to help you avoid injury to yourself and damage to the equipment.

List of Parts and Tools

You need the following tools and parts to remove and replace the I/O controller. If you need

additional equipment, contact a service representative for ordering information:

• A new I/O controller

• Number 2 Phillips and a 3/16-inch, ﬂat-blade screwdriver