Chapter 4 Troubleshooting Line Cards

General Information for Troubleshooting Line Card Crashes

Slot 5/1: 0 crashes

Slot 6/0: 0 crashes

Slot 6/1: 0 crashes

Slot 7/0: 0 crashes

Slot 7/1: 0 crashes

Slot 8/0: 0 crashes

Slot 8/1: 0 crashes

Router#

Step 6 After identifying the particular card that crashed, use the show context command again to display more information about the most recent crash. For example:

Router# show context slot 2/0

CRASH INFO: Slot 2/0, Index 1, Crash at 19:57:56 PDT Wed Nov 27 2002

VERSION:

7200 Software (UBR10KCLC-LCK8-M), Version 12.2(122BC.021127.), CISCO DEVELOPMENN Compiled Wed 27-Nov-02 12:57 by

Card Type: UNKNOWN, S/N CAB0544L6F5

System exception: sig=10, code=0x8000000C, context=0x60A1BDE4

STACK TRACE:

traceback 601C28FC 601C29B4 601B9E8C 600F99B0 600F999C

CONTEXT:

$0 : 00000000, AT : 60930000, v0 : FFFFFFFF, v1 : 60940000

a0 : 00000000, a1 : 00000000, a2 : 00000001, a3 : 0000EA60

t0 : FFFFFFFF, t1 : FFFFA91C, t2 : 601284E0, t3 : FFFF00FF

t4 : 601284D8, t5 : 00000062, t6 : 00000000, t7 : D1B71759

s0 : 00000000, s1 : 00000008, s2 : 00000000, s3 : 60CD0998

s4 : 60CD0990, s5 : 00000000, s6 : 00000002, s7 : 60940000

t8 : 60D98C2C, t9 : 0000001B, k0 : 3040D001, k1 : BE840244

gp : 6093BD60, sp : 60CD0968, s8 : 60A70000, ra : 601C2900

EPC : 0x601C28F8, SREG : 0x3400F903, Cause : 0x8000000C

ErrorEPC : 0xCF1998F2

SLOT 2/0: *Jan 1 00:01:30.371: %SYS-2-EXCEPTIONDUMP: System Crashed, Writing Coredump...

Router#

Step 7 Look for the SIG Type in the line that starts with “System exception” to identify the reason for the crash. Table 4-2lists the most common SIG error types and their causes.

Table 4-2 SIG Value Types

 

 

SIG Value

SIG Name

 

Error Reason

 

 

 

 

 

 

 

 

 

SIGINT

 

Unexpected hardware interrupt

 

 

 

 

 

3

SIGQUIT

 

Abort due to break key

 

 

 

 

 

4

SIGILL

 

Illegal opcode exception

 

 

 

 

 

5

SIGTRAP

 

Abort due to Break Point or an arithmetic exception

 

 

 

 

 

8

SIGFPE

 

Floating point unit (FPU) exception

 

 

 

 

 

9

SIGKILL

 

Reserved exception

 

 

 

 

 

10

SIGBUS

 

Bus error exception

 

 

 

 

 

11

SIGSEGV

 

SegV exception

 

 

 

 

 

20

SIGCACHE

 

Cache parity exception

 

 

 

 

 

21

SIGWBERR

 

Write bus error interrupt

 

 

 

 

 

 

 

 

 

 

 

 

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

 

 

 

 

 

 

 

 

OL-1237-01

 

 

 

 

4-3

 

 

 

 

 

 

 

Page 51
Image 51
Cisco Systems UBR10012 manual SIG Value SIG Name Error Reason