Monday, August 10, 2015

2960S stack low-memory ( ssh/console )

A problem has developed in a cisco 2960S stack with 3x member switches that seems to be  effecting all remote-access outside of  SNMP polling.

1st the uptime,  code & cpu history;



193+ days uptime




Here's what happens we try to login via the console ( ssh  was a quick disconnect )


Very bad,  but the switch is running 100% & does not seem effected outside of remote ssh access.




Ken Felix
NSE ( Network Security Expert) and Route/Switching Engineer.
kfelix  -----a----t---- socpuppets ---dot---com

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1 comment:

  1. UnknownAugust 17, 2015 at 4:31 PM

    Cisco IOS is famous with memory leaks due to SNMP. The moment you enable SNMP it would start leaking memory byte by byte and it 3 months it will get to 99%. Once it gets to that point it will start loosing services one by one until it totally crashes.

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