Configuring And Troubleshooting Line Card Interfaces - Cisco ASR 9901 Hardware Installation Manual

Troubleshooting the Installation

Configuring and Troubleshooting Line Card Interfaces

After the person who installed the hardware verifies that the line card is working properly by examining the
LEDs, the network administrator can configure the new interface. These sections provide information on
configuring and troubleshooting the line card:
Configuration Parameters
The following table lists the default interface configuration parameters that are present when an interface is
enabled on a 10-Gigabit Ethernet line card. See Cisco IOS XR software documentation for complete information
about these parameters.
Table 21: Line Card Configuration Default Values
Parameter
Flow control
MTU
MAC address
Line Card Interface Address
A Cisco ASR 9901 Router or Cisco ASR 9001 Router identifies an interface address by its rack number, line
card slot number, instance number, and port number, in the format rack/slot /instance/port. The rack parameter
is reserved for multirack systems; so, the rack parameter is always 0 (zero) for the Cisco ASR 9901 Router
or Cisco ASR 9001 Router.
The Cisco ASR 9001 Router line card slot is numbered 0 with three subslots. The subslots on the line card
are numbered 0, 1, and 2. 0 and 1 are reserved for EP ports and 2 is for native ports on the line card. Even if
the line card contains only one port, you must use the rack/slot /instance/port notation.
Using Configuration Commands
The command line interface (CLI) for Cisco IOS XR software is divided into different command modes. To
configure a line card, you enter the correct mode and then enter the commands you need.
When you first log in, you are automatically in EXEC mode. Next, enter the configure command to access
configuration mode. Then, enter the interface command to enter interface configuration mode and specify the
interface. You are now in the command mode where you can configure the new interface. Be prepared with
the information you will need, such as the interface IP address.
Basic Line Card Configuration
This procedure is for creating 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.
This example shows one way to configure the basic parameters of a line card:
Configuration File Entry Default Value
flow-control egress oningress off
mtu 1514 bytes for normal frames
1518 bytes for IEEE 802.1Q tagged frames
1522 bytes for Q-in-Q frames
mac address Hardware burned-in address (BIA)
Cisco ASR 9901, ASR 9001, and ASR 9001-S Routers Hardware Installation Guide
Configuring and Troubleshooting Line Card Interfaces
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