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stefan.graber
Beginner

Memory Allocation Error with IOS 15.0(2)

Hi,

I updated a switch (C3560G-48PS-S) from 12.2(58)SE2 to IOS 15.0(2)SE1. Some time after the upgrade I got error messages about memory allocations to our syslog server in regular intervals (each 30 seconds).

I wasn't able to connect to the switch over SSH anymore. It wasn't even possible to access the CLI over the console cable (error message: "Low on memory; try again later"). After a reboot of the switch, it went fine for some hours, but the error appeared again. It seems that the switching process still works fine as there aren't any complaints of users about network issues.

Important: I installed the same IOS version to another switch of the type C2960-24PC-L and the memory allocation appeared there after some hours as well. I thought that this issue is maybe solved with the newest release of IOS for that particular device. But even with IOS 15.0(2)SE2 on the C2960-24PC-L the memory allocation error happens again. Just the traceback is a little bit different.

Does anyone have the same issue with IOS 15.0(2) as well? Could maybe give me someone a hint what to do for solving that issue?

Thanks.

Error Message of C3560G-48PS-S with IOS 15.0(2)SE1

031513: Feb 22 11:00:26.848: %SYS-2-MALLOCFAIL: Memory allocation of 65536 bytes failed from 0x2C13A88, alignment 0

Pool: Processor  Free: 693180  Cause: Memory fragmentation

Alternate Pool: None  Free: 0  Cause: No Alternate pool

-Process= "CDP Protocol", ipl= 0, pid= 205

-Traceback= 1FBAAF4z 2BF7F08z 2BFEAE4z 2C13A8Cz 1EB4DF4z 1EB8A0Cz 1EB8B00z 1E82974z 1A2ABF0z 1A2F1B0z 12EA4FCz 12EE85Cz 19EDC84z 19E83D8z

Error Message of C2960-24PC-L with IOS 15.0(2)SE1

113163: Feb 21 08:53:33.218: %SYS-2-MALLOCFAIL: Memory allocation of 65536 bytes failed from 0x1441F44, alignment 0

Pool: Processor  Free: 421908  Cause: Memory fragmentation

Alternate Pool: None  Free: 0  Cause: No Alternate pool

-Process= "CDP Protocol", ipl= 0, pid= 179

-Traceback= E08B40z 14263C4z 142CFA0z 1441F48z D02E40z D06A58z D06B4Cz CD09C0z 880BF0z 87E4C4z 87E600z 8845F0z C53660z C5397Cz C4FB20z 14A10ACz

Error Message of C2960-24PC-L with IOS 15.0(2)SE2

011537: Feb 22 17:01:49.415: %SYS-2-MALLOCFAIL: Memory allocation of 65536 bytes failed from 0x1442328, alignment 0

Pool: Processor  Free: 329472  Cause: Memory fragmentation

Alternate Pool: None  Free: 0  Cause: No Alternate pool

-Process= "CDP Protocol", ipl= 0, pid= 179

-Traceback= E08F18z 14267A8z 142D384z 144232Cz D0321Cz D06E34z D06F28z CD0D

17 REPLIES 17

TAC found the following bug ID with ours:

CSCuf32893. I applied the workaround and memory holding has stabilized. Where as before it was constantly incrementing.

Leo Laohoo
VIP Community Legend

Any suggestions on a good, working IOS to go to?

Hi Aaron,

Just saw your question.  Stick with 12.2(55)SE7.  15.0 with 3560 & 3750 -- not a good mix.  Gets worst when you mix 15.0(2)SE2 and 802.1X with 3560 & 3750.   15.0(2)SE2 I've had good results on 2960/2960S fleet, even with 802.1x.

I'm currently testing both 12.2(55)SE8 and 15.0(2)SE4.

I'll let y'all know how I go after two weeks.

Andreas Jaeger
Beginner

I have the same issue on a 4506-E with SUP6L-E, IOS 15.1(2)SG