[c-nsp] High CPU on 3750G-24-TS

[Tassos Chatzithomaoglou]

You can start with "sh controllers cpu-interface" and "sh platform tcam utilization"

-- 
Tassos

William wrote on 12/11/2008 13:15:
> Hi List,
> 
> We currently have a 3750G-E in our network which is experiencing a
> high CPU load and I'm trying to understand why, the CPU is over 50%
> all the time and at peak traffic times we are seeing around 85% on
> Cacti using 5 minute averages.
> 
> When running a show proc cpu sorted I can see that IP Input is taking
> up most of the CPU time with Spanning Tree coming second however ST is
> only using a fraction of what IP Input is using.
> 
> The switch is not in a stack, runs IOS version 12.2(25)SEB4 and the
> image is IPSERVICES, the configuration has one routed port to another
> site (with sparse-dense-mode on), has one EIGRP process, 19 static
> routes,  access lists which are only used for SNMP/VTY and it has two
> VLAN interfaces. One of the VLAN interfaces has sparse-dense-mode
> enabled and a igmp join-group command. It pushes a lot of multicast
> traffic (around 10Mbits) which is probably the problem but I thought
> the 3750 would have been able to handle it without an issue.
> 
> Any help is appreciated, I'd like to have a good understanding of what
> is causing the issue.
> 
> Thank you for your time,
> 
> W
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