Chapter 5 Troubleshooting the Installation
Troubleshooting the Switch Fabric
5-34
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
OL-11495-01
-------- -------- -------- -------- --------
Los 0 0 0 0 0
state Off Off Off Off Off
crc16 876 257 876 876 876
To Fabric FIA Errors
-----------------------
sca not pres 0 req error 1 uni fifo overflow 0
grant parity 1 multi req 0 uni fifo undrflow 0
cntrl parity 0 uni req 0 crc32 lkup parity 0
multi fifo 0 empty DST req 0 handshake error 0
cell parity 0
The common failure patterns and recommended actions for grant parity and
request errors are as follows (one step at a time until the problem goes away):
1.
Grant errors on more than one line card:
a.
Replace the CSC (see the note below to know which one should be
swapped).
b.
Replace the backplane.
2.
Grant errors on one line card:
a.
Replace the line card.
b.
Replace the CSC (see the note below to know which one should be
swapped).
c.
Replace the backplane.
Note
If multiple line cards are reporting grant parity or request errors and the router is
still functioning, then a CSC switchover has occurred. The failed CSC is the one
that is currently the backup CSC (not the one listed as Master Scheduler in the
show controllers fia
output). If Halted is next to the heading From Fabric FIA
Errors or To Fabric FIA Errors, or if the router is no longer forwarding traffic, then
a CSC switchover has not occurred and the failing CSC is the one listed as Master
Scheduler. By default, the CSC in slot 17 is the primary and the CSC in slot 16 is
the backup.