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Cisco 2960-X Rebooting ?

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waterose

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I just opened a new box of 2960-X series switch. The switch is behaving abnormally . It is rebooting

I took the output of the error. It will be really helpful for me if you guys ever faced this issue.

Another issue I am not able to console into it using the secure CRT. putty is working but suddenly the connectivity loss is there.

It will reconnect again if I reopen the putty. I am having 8 new boxes of the same device.

Below is the output error.

"POST: Failed PortPhyLoopback Packet Test asic_index 0 port_hardware_index 2

POST: PortASIC Port Loopback Tests : End, Status Failed

Error: ASIC/PHY POST failed. Cannot continue.

%Software-forced reload

11:53:22 UTC Tue Feb 18 2014: Unexpected exception to CPUvector 2000, PC = 2711130

-Traceback= 0x2711130z 0x27110C8z 0x1F8E3B8z 0x1B1C194z 0x1B1C364z 0x1B1C4BCz 0x43FE48z 0x4400B8z 0x27126B8z 0x270C8F8z

Writing crashinfo to flash:/crashinfo_ext/crashinfo_ext_1

11:53:26 UTC Tue Feb 18 2014: Unexpected exception to CPUvector 2000, PC = 1B668D8

-Traceback= 0x1B668D8z 0x270C8F8z 0x27126B8z 0x270C8F8z

=== Flushing messages (11:53:26 UTC Tue Feb 18 2014) ===

Buffered messages:

Queued messages:

Feb 18 11:53:26.715: %SYS-3-LOGGER_FLUSHING: System pausing to ensure console debugging output.

*Mar 1 00:00:23.502: Read env variable - LICENSE_BOOT_LEVEL =

Mar 30 01:27:38.146: %IOS_LICENSE_IMAGE_APPLICATION-6-LICENSE_LEVEL: Module name = c2960x_lanbase Next reboot level = lanbase and License = lanbase

Feb 18 11:52:26.275: in Switch 0. Cannot read pid from Flexstack module

Cisco IOS Software, C2960X Software (C2960X-UNIVERSALK9-M), Version 15.0(2)EX4, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2013 by Cisco Systems, Inc.

Compiled Thu 14-Nov-13 11:33 by prod_rel_team

Debug Exception (Could be NULL pointer dereference) Exception (0x2000)!

SRR0 = 0x02023A78 SRR1 = 0x00029200 SRR2 = 0x02711130 SRR3 = 0x00029200

ESR = 0x00000000 DEAR = 0x5422DA0D TSR = 0x84000000 DBSR = 0x01000000

CPU Register Context:

Vector = 0x00002000 PC = 0x02711130 MSR = 0x00029200 CR = 0x39000093

LR = 0x027110C8 CTR = 0x00418538 XER = 0xC0000029

R0 = 0x027110C8 R1 = 0x050ED428 R2 = 0x00000000 R3 = 0x03569470

R4 = 0x00000000 R5 = 0x00000000 R6 = 0x00000000 R7 = 0x00000025

R8 = 0x00000000 R9 = 0x038A0000 R10 = 0x050ED66C R11 = 0x00000000

R12 = 0x39000099 R13 = 0x1F182838 R14 = 0x00440058 R15 = 0x00000000

R16 = 0x00000000 R17 = 0x00000000 R18 = 0x00000000 R19 = 0x00000000

R20 = 0x00000000 R21 = 0x00000000 R22 = 0x00000000 R23 = 0x00000000

R24 = 0x00000000 R25 = 0x00000000 R26 = 0x00000001 R27 = 0x00000002

R28 = 0x037FEA74 R29 = 0x00000000 R30 = 0x050ED458 R31 = 0x00000000

Stack trace:

PC = 0x02711130, SP = 0x050ED428

Frame 00: SP = 0x050ED438 PC = 0x027110C8

Frame 01: SP = 0x050ED450 PC = 0x021A8430

Frame 02: SP = 0x050ED4B0 PC = 0x01F8E3B8

Frame 03: SP = 0x050ED4C0 PC = 0x01B1C194

Frame 04: SP = 0x050ED4E0 PC = 0x01B1C364

Frame 05: SP = 0x050ED4F8 PC = 0x01B1C4BC

Frame 06: SP = 0x050ED528 PC = 0x0043FE48

Frame 07: SP = 0x050ED630 PC = 0x004400B8

Frame 08: SP = 0x050ED638 PC = 0x027126B8

Frame 09: SP = 0x00000000 PC = 0x0270C8F8

Switch uptime is 1 minute, 28 seconds

cisco WS-C2960X-48FPD-L (APM86XXX) processor (revision A0) with 524288K bytes of memory.

Processor board ID FCW1749A683

CPU rev: B

Image passed digital signature verification

Board rev: 5

Testing DataBus...

Testing AddressBus...

Testing Memory from 0x00000000 to 0x1fffffff..."
 
It sounds like an ASIC is bad and as such, requires an RMA.

You could force the switch to boot into ROMMON and see if you can push the code to it again but that's a long shot as a fix.
 
Last edited:
Below is the output error.

"POST: Failed PortPhyLoopback Packet Test asic_index 0 port_hardware_index 2

POST: PortASIC Port Loopback Tests : End, Status Failed

Error: ASIC/PHY POST failed. Cannot continue.

%Software-forced reload"
This is almost certainly defective hardware. The latest software is 15.0(2)EX5, one rebuild newer than what shipped on the switch. The list of fixes between the version you have and the latest doesn't mention any corrections in this area.

You say you bought several switches? Try a second one and see if it works better.
 
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