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New Member

1751 router problem

I got a proble mwith one of my router. It seems like I cant remote or console to it at serain times. Whe I connect on console it shows this message:

*Mar 11 22:53:09.118: %SYS-2-MALLOCFAIL: Memory allocation of 126 bytes failed

Pool: Processor Free: 231164 Cause: Memory fragmentation

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

-Process= "IP Input", ipl= 0, pid= 29

-Traceback= 801FE048 802004F0 80200B58 8046BFE4 8000A7D8 8019FD28 803A3644 8039C

%% Low on memory; try again later

%% Low on memory; try again later

%% Low on memory; try again later

Could it be that I dont have enough flash or syatem memory. Please advice

New Member

Re: 1751 router problem

Hi, you can use error message decoder to get the following info:

%SYS-2-MALLOCFAIL: Memory allocation of [dec] bytes failed from [hex], pool [chars], alignment [dec]

The requested memory allocation is not available from the specified memory pool. The router memory has been exhausted or fragmented. This condition may be caused by the current system configuration, the network environment, or a software error.

Recommended Action: Check the minimum memory requirements for your system configuration. If your system meets those requirements, this condition is probably caused by a software failure. To take advantage of recent fixes, upgrade your system to the latest Cisco IOS software release in your release train.

New Member

Re: 1751 router problem

Here is the excellent URL you maybe interesting in troubleshooting these type of issue.



New Member

Re: 1751 router problem

I got this configured on my router by default:memory-size iomem 20

Could this be the cause of the problem ? And what does that

commands means ?

Anyway, here is the show version of the router

ITC-FR-Host>#sho ver

Cisco Internetwork Operating System Software

IOS (tm) C1700 Software (C1700-SY-M), Version 12.2(8)YM, EARLY


Synched to technology version 12.2(11.2u)T

TAC Support:

Copyright (c) 1986-2002 by cisco Systems, Inc.

Compiled Fri 23-Aug-02 07:35 by ealyon

Image text-base: 0x80008124, data-base: 0x80BAE7EC

ROM: System Bootstrap, Version 12.2(1r)XE1, RELEASE SOFTWARE (fc1)

ROM: C1700 Software (C1700-SY-M), Version 12.2(8)YM, EARLY


ITC-FR-Host> uptime is 1 week, 6 days, 20 hours, 0 minutes

System returned to ROM by power-on

System image file is "flash:c1700-sy-mz.122-8.ym.bin"

cisco 1751 (MPC860P) processor (revision 0x700) with 26215K/6553K

bytes of memo.

Processor board ID JAD06470DTQ (8170531), with hardware revision


MPC860P processor: part number 5, mask 2

Bridging software.

X.25 software, Version 3.0.0.

1 FastEthernet/IEEE 802.3 interface(s)

1 Serial(sync/async) network interface(s)

32K bytes of non-volatile configuration memory.

16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

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