Please help Router eats up memory All of a sudden

[DIGI]

-Process= "IP Input", ipl= 0, pid= 31

-Traceback= 603FBF58 603FE53C 603F7BF0 60999680 6099CF60 60992BF4 604B719C 604B5

ED0 604B60A0 604B6278

01:29:25: %SYS-2-MALLOCFAIL: Memory allocation of 32768 bytes failed from 0x603F

7BE8, alignment 0

Pool: Processor Free: 1991696 Cause: Memory fragmentation

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

This is happening for the past few days

The router was working fine till a few days ago.

Can some one help?

ISO version 12.2

Thanks in advance

Jith

[zander13]

Nachi virus ???

[DIGI]

let me try to put a acl on and see if its the virus.

[sandonen]

You most likely have the nachi virus. Cisco has documented ways to create route-maps to help with the problem.

[sachinraja]

should be a Nachi.. just do a "ip route-cache flow" in the ethernet interface and give the command "sh ip cache flow".

if the dest port is 0800 it is a icmp type 8 nachi virus. apply a "deny icmp any any" on the ethernet to stop this.

the attack can also be on some standard ports like 80, 69 etc. just confirm.

You need to apply patches from microsoft to the clients for preventing this..

[DIGI]

Hi guys,

Thanks guys had the acl recon by cisco in place and it helped.

Regards

Jith

[opiedrah]

What is the ACL recon by cisco?

[DIGI]

http://www.cisco.com/warp/public/707/cisco-sn-20030820-nachi.shtml#aclios

regards

jith