[c-nsp] 3750 stack(2 switches) - High CPU for an hour?

Adam Baxter adam1984 at gmail.com
Mon Dec 1 19:27:53 EST 2014

We have seen high CPU Caused by SNMP.. we have implemented a view that
helped. viewing the flash and license mib causes problems.

snmp-server view protect iso included
snmp-server view protect ciscoLicenseMgmtMIB excluded
snmp-server view protect ciscoFlashFileEntry excluded

snmp-server community public view protect RO

also, it might be worth implementing storm control on the client facing

On 1 December 2014 at 19:21, CiscoNSP List <cisconsp_list at hotmail.com>

> Hi Everyone,
> Strange situation on the weekend...started losing OSPF adjacencies to
> devices connected to(through) a 3750 stack (The 3750 is only doing L2, so
> routers connected together via the 3750)...It lasted ~1 hour (Happened
> while I was on a plane, so the only info I have are logs and snmp
> graphs)....CPU hit ~85%, traffic on all ports was "normal", PPS was
> "normal", switch didnt reboot and nothing at all in the logs....If the
> switch got hit with a mac flood or loop, I would have thought it would have
> a logged "something"?
> Any suggestions on what else could have caused this?
> Cheers.
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