[c-nsp] 3750 High Cpu IP Input

[Brian Turnbow]

You can use  show controller cpu  to help see whats going to the cpu
Make sure you have no ip redirects and no proxy arp on all the interfaces.
How many routed interfaces do you have ? 
The output below for "max" is for 8 routed interfaces if you have more you should change to the desktop switching template.
With your roughly your values for indirectly connected routes and 13 ip interfaces on a box I needed to switch the template "sdm prefer routing" requies reload.

Regards

Brian 




-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Chris Lane
Sent: venerdì 24 aprile 2009 1.09
To: Peter Rathlev
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] 3750 High Cpu IP Input

sh platform tcam utilization

CAM Utilization for ASIC# 0                      Max            Used
                                             Masks/Values    Masks/values

 Unicast mac addresses:                        784/6272         37/235
 IPv4 IGMP groups + multicast routes:          144/1152          6/26
 IPv4 unicast directly-connected routes:       784/6272         37/235
 IPv4 unicast indirectly-connected routes:     272/2176         52/326
 IPv4 policy based routing aces:                 0/0             0/0
 IPv4 qos aces:                                528/528          18/18
 IPv4 security aces:                          1024/1024         57/57

Note: Allocation of TCAM entries per feature uses
a complex algorithm. The above information is meant
to provide an abstract view of the current TCAM utilization

Hope this helps.

On Thu, Apr 23, 2009 at 4:41 PM, Peter Rathlev <peter at rathlev.dk> wrote:

> On Thu, 2009-04-23 at 16:15 -0400, Chris Lane wrote:
> >  This box has been in production for over a year and doesn't really do
> > to much as you can see from my orig thread it moves about 11MB.
> >
> > This just started late last night yet we didn't add any new customer
> > nor did anybody even touch switch as the device is remote.
> >
> > I read in an older thread regarding same thing that the person
> > rebooted and of course it resolved issue. I am planning to do that
> > Early tomorrow am, but
> > i really want to know what the heck is causing this.
> >
> > Yes CEF is running.
>
> What about TCAM utilisation ("show platform tcam utilization")?
>
> Regards,
> Peter
>
>
>


-- 
//CL
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