[c-nsp] 2960-X Reboot Loop

Christopher Werny cwerny at ernw.de
Tue Nov 8 11:18:33 EST 2016 

Hi,

thanks for the feedback. We haven't updated anything and initiated the replacement of the box. 

Cheers,
Christopher

-----Original Message-----
From: Hunter Fuller [mailto:hf0002 at uah.edu] 
Sent: Dienstag, 8. November 2016 16:22
To: Christopher Werny <cwerny at ernw.de>
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] 2960-X Reboot Loop

It's happening in the loader too, so it can't just be an IOS bug. Unless you just updated the boot loader, I would bet on hardware failure. 

On Tuesday, November 8, 2016, Christopher Werny <cwerny at ernw.de <mailto:cwerny at ernw.de> > wrote:


	Hello,
	
	may I query the wisdom of this list for feedback regarding an issue we have
	with a 2960-X
	
	Since today, our 2960-X is in a rebooting loop and I see the following error
	messages on the local console during the boot process:
	
	Initializing Flash...
	mifs[5]: 12 files,Err: Interrupt: Machine check (0x200): Data access error:
	    PC: 0x1f19f8bc, MSR: 0x00021000, ESR: 0x00000000, MCSR: 0x84800000
	(Bailed out.)
	Err: Interrupt: Machine check (0x200): Data access error:
	    PC: 0x1f19f8bc, MSR: 0x00021000, ESR: 0x00000000, MCSR: 0x84800000
	(Bailed out.)
	Err: Interrupt: Machine check (0x200): Data access error:
	    PC: 0x1f19f8bc, MSR: 0x00021000, ESR: 0x00000000, MCSR: 0x84800000
	(Bailed out.)
	Err: Interrupt: Machine check (0x200): Data access error:
	    PC: 0x1f19f8bc, MSR: 0x00021000, ESR: 0x00000000, MCSR: 0x84800000
	(Bailed out.)
	Err: Interrupt: Machine check (0x200): Data access error:
	    PC: 0x1f19f8bc, MSR: 0x00021000, ESR: 0x00000000, MCSR: 0x84800000
	(Bailed out.)
	Err: Interrupt: Machine check (0x200): Data access error:
	
	    PC: 0x1f19f8bc, MSR: 0x00021000, ESR: 0x00000000, MCSR: 0x84800000
	
	(Bailed out.)
	
	
	
	Panic: Too many exceptions: Turn off Machine Check interrupt!!
	
	
	 1 directories
	mifs[5]: Total bytes     :    1806336
	mifs[5]: Bytes used      :     834560
	mifs[5]: Bytes available :     971776
	mifs[5]: mifs fsck took 2 seconds.
	mifs[6]: 1 files, 1 directories
	mifs[6]: Total bytes     :    3870720
	mifs[6]: Bytes used      :     971264
	mifs[6]: Bytes available :    2899456
	mifs[6]: mifs fsck took 1 seconds.
	mifs[7]: 5 files, 1 directories
	mifs[7]: Total bytes     :     258048
	mifs[7]: Bytes used      :       8192
	mifs[7]: Bytes available :     249856
	mifs[7]: mifs fsck took 0 seconds.
	mifs[8]: 5 files, 1 directories
	mifs[8]: Total bytes     :     258048
	mifs[8]: Bytes used      :       8192
	mifs[8]: Bytes available :     249856
	mifs[8]: mifs fsck took 0 seconds.
	mifs[9]: 9 files, 2 directories
	mifs[9]: Total bytes     :  122185728
	mifs[9]: Bytes used      :   48398848
	mifs[9]: Bytes available :   73786880
	mifs[9]: mifs fsck took 45 seconds.
	...done Initializing Flash.
	Loading "flash:c2960x-universalk9-mz.152-4.E1.bin"...Verifying image
	flash:c2960x-universalk9-mz.152-4.E1.bin....................................
	............n
	@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
	@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
	@@@@@@
	File "flash:c2960x-universalk9-mz.152-4.E1.bin" uncompressed and installed,
	entry point: 0x3000
	executing...
	
	 : Unexpected exception to CPUvector 200, PC = 36A0484
	-Traceback= 0x36A0484z
	
	
	=== Flushing messages () ===
	
	Cisco IOS Software, C2960X Software (C2960X-UNIVERSALK9-M), Version
	15.2(4)E1, RELEASE SOFTWARE (fc2)
	Technical Support: http://www.cisco.com/techsupport <http://www.cisco.com/techsupport> 
	Copyright (c) 1986-2016 by Cisco Systems, Inc.
	Compiled Thu 28-Jan-16 15:56 by prod_rel_team
	
	Machine Check Exception (0x0200)!
	ESR: 0x00000000
	SRR0: 0x036A0484 SRR1: 0x00029200 SRR2: 0x02F35B70 SRR3: 0x00028000
	MCSR: 0x84800000
	L2MCSR: 0x00000000
	
	CPU Register Context:
	Vector = 0x00000200  PC = 0x036A0484  MSR = 0x00029200  CR = 0x00000000
	LR = 0x0369C1A4  CTR = 0x0369421C  XER = 0xE000007E
	R0 = 0x00000000  R1 = 0x0779DD88  R2 = 0x00000000  R3 = 0x00000000
	R4 = 0x036A0484  R5 = 0x00029200  R6 = 0xBEEFCAFE  R7 = 0xBEEFCAFE
	R8 = 0x00400080  R9 = 0x00000001  R10 = 0x07791160  R11 = 0x07791150
	R12 = 0x33003033  R13 = 0x1F1828CC  R14 = 0x02918E6C  R15 = 0x00000000
	R16 = 0x00000000  R17 = 0x00000000  R18 = 0x00000000  R19 = 0x00000000
	R20 = 0x00000000  R21 = 0x00000000  R22 = 0x00000000  R23 = 0x00000000
	R24 = 0x00000000  R25 = 0x00000000  R26 = 0x00000000  R27 = 0x00000000
	R28 = 0x00000000  R29 = 0x00000000  R30 = 0x00000000  R31 = 0x00000000
	
	Stack trace:
	PC = 0x036A0484, SP = 0x0779DD88
	Frame 00: SP = 0x00000000    PC = 0x02951BEC
	
	The only thing I was able to find was a post on the support forum with the
	same issue, but with no resolution. I wasn't able to find bug id that would
	indicate an IOS bug (but my search skills may have failed me).
	
	https://supportforums.cisco.com/discussion/13092381/cisco-switch-2960-x-seri
	es-error <https://supportforums.cisco.com/discussion/13092381/cisco-switch-2960-x-seri  es-error> 
	
	I need to check with TAC, but from your point of view, does it look more
	like a hardware failure or a potential IOS bug?
	
	Thanks in advance for your feedback
	
	Cheers,
	Christopher
	
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-- 


--
Hunter Fuller
Network Engineer
VBRH Annex B-1
+1 256 824 5331

Office of Information Technology
The University of Alabama in Huntsville
Systems and Infrastructure

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