SUP 720 -3B Supervisor Engine Crashed

Yasir Irfan — Wed, 25 May 2011 05:17:56 +0000

In my previous post I talked about the crashed Sup 720- 3B supervisor Engine for a Cisco Catalyst 6513 Switch. Since there was no ray of hope for the SUP 720-3B Supervisor Engine and I couldn’t make use of “show tech” IOS command. I decided to open a TAC case with Cisco.

The TAC Engineer after studying the logs generated by the crashed Sup 720- 3B supervisor Engine came up with the following reply

“Hello Yasir

It seems we have faulty SUP and need to be replaced since it is keep crashing and not coming up.”

After looking at the log’s I predict there might be problem with flash memory of SUP 720 -3B Supervisor Engine.

System Bootstrap, Version 8.1(3)

Cat6k-Sup720/SP processor with 524288 Kbytes of main memory

rommon 1 >

I tried to boot the SUP 720-3B using the boot command from rommon mode but that too failed and I am getting the following error.

%DIAG-SP-6-RUN_MINIMUM: Module 7: Running Minimal Diagnostics…

Also I tried to boot the SUP 720-3B from the flash memory using the “bootflash:”command that too failed again I am getting the same error

%DIAG-SP-6-RUN_MINIMUM: Module 7: Running Minimal Diagnostics…

%Software-forced reload

Breakpoint exception, CPU signal 23, PC = 0×41D8BE6C

-Traceback= 41D8BE6C 41D89DB8 41B370D8 41B37104 41A09A1C 41A4ACCC 41A41000 41A41058 4075B9FC 4075C6E4 419168D8 419166F4 41AD8610 41AD5530 41AD574C 41D7E35C

$0 : 00000000, AT : 43100000, v0 : 44AF0000, v1 : 43640000

a0 : 50E46E18, a1 : 0000F100, a2 : 00000000, a3 : 42E30000

t0 : 41D7E978, t1 : 3400F101, t2 : 41D7E988, t3 : FFFF00FF

t4 : 41D7E978, t5 : 00000000, t6 : 00000000, t7 : 00000000

s0 : 00000000, s1 : 430B0000, s2 : 5033A36C, s3 : 087365C8

s4 : 50D740D0, s5 : 50D1AC48, s6 : 00000040, s7 : 43890000

t8 : 5000BA74, t9 : 00000009, k0 : 00000000, k1 : 00000000

gp : 431011F0, sp : 5000BB28, s8 : 00000000, ra : 41D89DB8

EPC : 41D8BE6C, ErrorEPC : 65DFF3A3, SREG : 3400F103

MDLO : 00000000, MDHI : 00000000, BadVaddr : 00000000

DATA_START : 0×42DDFAF0

Cause 00000024 (Code 0×9): Breakpoint exception

Writing crashinfo to bootflash:crashinfo_20110523-131601

=== Flushing messages (16:16:01 KSA Mon May 23 2011) ===

Buffered messages:

00:01:01: curr is 0×0

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Network technologies and trends » Version 8.1(3)

SUP 720 -3B Supervisor Engine Crashed