Grant Parity And Request Errors - Cisco 12416 Installation And Configuration Manual

Chapter 5 Troubleshooting the Installation

Grant Parity and Request Errors

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The common failure patterns and recommended actions for crc16 errors are as
follows (one step at a time until the problem goes away):
Errors indicated on more than one line card from the same switch fabric card:
1.
Replace the switch fabric card in the slot corresponding to the errors.
a.
Replace all switch fabric cards.
b.
Replace the backplane.
c.
Errors indicated on one line card from more than one switch fabric card:
2.
Replace the line card.
a.
If errors are incrementing, replace the current master CSC.
b.
If errors are not incrementing and the current master is CSC0, replace
c.
CSC1.
Another troubleshooting indicator are the console logs or the output of the
show log command, in the form of grant parity and request errors. Look for the
following type of message that indicates a grant parity error:
%FABRIC-3-PARITYERR: To Fabric parity error was detected.
Grant parity error Data = 0x2.
SLOT 1:%FABRIC-3-PARITYERR: To Fabric parity error was detected.
Grant parity error Data = 0x1
You can also use the output from the show controllers fia command. Important
information is underlined:
Router#show controllers fia
Fabric configuration: Full bandwidth, redundant fabric
Master Scheduler: Slot 17
From Fabric FIA Errors
-----------------------
redund FIFO parity 0
crc32 lkup parity 0
Switch cards present
Switch cards monitored
Slot: 16
Name: csc0
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
Backup Scheduler: Slot 16
redund overflow 0
cell parity 0
0x001F Slots
0x001F Slots
17 18
csc1 sfc0
Troubleshooting the Switch Fabric
cell drops 76
crc32 0
16 17 18 19 20
16 17 18 19 20
19 20
sfc1 sfc2
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