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Cisco XR 12000 Series Router Ethernet Line Card Installation
OL-7861-01
Verifying and Troubleshooting the Installation
During a typical line card boot process, the following events occur:
1. The line card maintenance bus (MBus) module receives power and begins executing the MBus
software.
2. The line card MBus module determines the type of card on which it resides, performs internal
checks, and prepares to accept the Cisco IOS software from the RP.
3. The RP powers up the line card and loads the line card with its Cisco IOS software.
To verify that the line card is working properly, perform the following operational checks:
• During the line card boot process, observe the line card alphanumeric LEDs to ensure that the card
is running the typical initialization sequence. The sequence should end with IOS RUN.
• Observe the line card status LEDs to verify that the Active LED (Link LED or status LED for line
cards with no Active LED) is on. If an Active LED is not on, verify that the associated interface is
not shut down.
Status LEDs
The Gigabit Ethernet line cards and the 8-Port Fast Ethernet line card have different status LEDs.
Gigabit Ethernet Status LEDs
After installing the line card and connecting the interface cables, verify that the line card is working
properly by observing the LEDs on the faceplate. For the locations of the LEDs, refer to the figures in
the “Product Overviews” section on page 4.
Status LEDs show the status of each fiber-optic connector:
• LINK—When lit, indicates that the Gigabit Ethernet (GE) MAC layer is receiving comma characters
from a connected GE device.
• ACTIVE—When lit, indicates that the interface is active.
• RX FRAME—When lit, indicates that the interface has received a packet.
Alphanumeric LEDs explain the state of the line card and are made up of two, four-digit alphanumeric
LED displays. (See the “Alphanumeric LEDs” section on page 59.)
The status LEDs might not go on until after you have configured the line card interfaces (or turned them
on, if they were shut down).
The different operating states of the status LEDs on the Gigabit Ethernet line card are shown in Table 17.