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CiscoXR 12000 Series Router Ethernet Line Card Installation
OL-7861-01
Verifying and Troubleshooting the Installation
Alphanumeric LEDs

Ethernet line cards have two four-digit alphanumeric LED displays at one end of the faceplate, near the

ejector lever, that display a sequence of messages indicating the state of the card. In general, the LEDs

do not turn on until the RP recognizes and powers up the card. As it boots, the line card displays a

sequence of messages similar to those in Table 1 8.

Note It is normal for some displayed messages to appear too briefly to be read. Also, some messages listed in

Table 1 8 and Tabl e 19 may not appear on your line card.

Table17 Status LED Descriptions

LED Color/Activity Description

LINK Green •A signal is detected.
•There is RX synchronization.
•The GBIC or SFP module is inserted and has no fault conditions.
•The line card is connected to another functioning Gigabit Ethernet interface
and has received comma-detect characters.
Off •Loss of signal (LOS). Occurs when the signal is lost at the optical input. For
example, removing a GBIC or SFP or removing a cable causes both an LOS
and a loss of synchronization.
•Loss of RX synchronization. Occurs when the receiver cannot detect
commas. For example, removing the local RX cable or the remote TX cable
will cause loss of synchronization.
•Invalid word received. To maintain receiver alignment and synchronization,
the receiver looks for a unique detectable code-bit pattern. An invalid word
condition occurs because the receiver detects an incorrect or unsupported
character or sequence of characters, resulting in a loss of synchronization and
a link down condition.
ACTIVE Green •When the line protocol is up. For example, you enter a no shutdown
command as part of the interface configuration.
•During the line card hardware initialization sequence.
Off •The line is down because of a link failure or problem with the GBIC or SFP
module.
•Hardware initialization fails.
•The line card interface is shut down, because a GBIC or SFP module was
removed and replaced or was administratively shut down. Note that a newly
inserted line card is designated administratively down, so the Active LED for
the interface remains off until the interface is configured. The Active LED on
the line card does not go on until you configure the line card interface (or turn
the interface on if it was shut down). As an operational check, you can verify
that the card is receiving power by looking at the alphanumeric display
LEDs, which go on when a line card is inserted correctly into the chassis and
is powered on.
RX FRAME Green Packets are being received on this interface.
Off Packets are not being received on this interface.