Cisco CRS-1 - Carrier Routing System Router Troubleshooting Manual page 126

Verifying and Troubleshooting the Fabric Plane State
DETAILED STEPS
Command or Action
Step 1
admin
Example:
RP/0/RP0/CPU0:router#
Step 2
show controllers fabric plane all detail
Example:
RP/0/RP0/CPU0:router(admin)# show controllers
fabric plane all
Step 3
show controllers fabric plane all statistics
Example:
RP/0/RP0/CPU0:router(admin)# show controllers
fabric plane all statistics
Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
4-116
admin
Chapter 4
Purpose
Enters administration executive (admin EXEC) mode.
Displays system fabric plane information from all fabric
planes.
Check the number of planes in operation. If there are any
planes that are down (either the Admin State or Oper State
is DOWN), proceed to the
Planes" section on page 4-126.
A system can operate with seven planes without
performance degradation. As further planes are removed,
overall capacity degrades, but the system remains
operational. A system must have a minimum of two
operational planes to maintain service. One must be an
odd-numbered plane, the other must be an even-numbered
plane.
Displays controller fabric statistics for all planes.
Errors are indicated in the last three columns in the output:
CE=correctable errors
•
UCE=uncorrectable errors
•
PE=parity errors (in an ASIC memory)
•
The Out Cells value should be equal or greater than the In
Cells value because of multicast copies created in the fabric.
If the Out Cells value is equal to or greater than the In Cells
value, proceed to Step 4.
If the values in the Out Cells column are much less than the
values in the In Cells column, cells are being dropped. If the
Out Cells value is less than the In Cells value, proceed to the
"Verifying and Troubleshooting Up Fabric Planes" section
on page 4-121.
If the CE, UCE or PE values are incrementing, contact
Cisco Technical Support. For contact information for
Cisco Technical Support, see the
Documentation and Submitting a Service Request" section
on page viii in the Preface.
Troubleshooting Router Switch Fabric
"Troubleshooting Down Fabric
"Obtaining
OL-21483-02