Cisco CRS-1 - Carrier Routing System Router Troubleshooting Guide

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Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
OL-21483-02
Chapter 4 Troubleshooting Router Switch Fabric
Verifying and Troubleshooting Up Fabric Planes
SUMMARY STEPS
1. admin
2. show controllers fabric link port s2rx all | include UP.*DOWN.*SM
show controllers fabric link port s3rx all | include UP.*DOWN.*SM
show controllers fabric link port s2tx all | include UP.*DOWN.*SM
show controllers fabric link port s3tx all | include UP.*DOWN.*SM
3. show controllers fabric link port s2rx all statistics | exclude \ 0 +0 +0$
show controllers fabric link port s3rx all statistics | exclude \ 0 +0 +0$
4. config
5. controllers fabric link port {s1rx | s1tx | s2rx | s2tx | s3rx | s3tx} location link-id shutdown
6. Reload the fabric card.
7. Clean and reconnect the fiber-optic connectors (Cisco CRS-1 Multishelf Systems).
DETAILED STEPS
Command or Action Purpose
Step 1
admin
Example:
RP/0/RP0/CPU0:router# admin
Enters administration executive (admin EXEC) mode.
Step 2
show controllers fabric link port s2rx all |
include UP.*DOWN.*SM
show controllers fabric link port s3rx all |
include UP.*DOWN.*SM
show controllers fabric link port s2tx all |
include UP.*DOWN.*SM
show controllers fabric link port s3tx all |
include UP.*DOWN.*SM
Example:
RP/0/RP0/CPU0:router(admin)# show controllers
fabric link port s2rx all | include
UP.*DOWN.*SM
RP/0/RP0/CPU0:router(admin)# show controllers
fabric link port s3rx all | include
UP.*DOWN.*SM
RP/0/RP0/CPU0:router(admin)# show controllers
fabric link port s2tx all | include
UP.*DOWN.*SM
RP/0/RP0/CPU0:router(admin)# show controllers
fabric link port s3tx all | include
UP.*DOWN.*SM
Displays the link state of a fiber port. The command output
shows interchassis link ports that are operationally down,
excluding those that are administratively down and those
that are completely disconnected.
Repeat this command for each stage and direction and
check if a fabric port link is down (ADMIN UP and OPER
DOWN).
The following down flags may be displayed:
• l—Link is down
• o—Downed link port due to the other end of the link
being down
• a—ASIC is down
• A or L—ASIC (A) or link (L) is administratively shut
down
If the link state of a fabric port is down, proceed to Step 5
to shut down the link.

Cisco CRS-1 - Carrier Routing System Router Specifications

General

Brand	Cisco
Model	CRS-1 - Carrier Routing System Router
Category	Network Router
Language	English