[c-nsp] 3750 High Cpu IP Input

[Chris Lane]

sh controllers cpu-interface
ASIC    Rxbiterr   Rxunder    Fwdctfix   Txbuflos   Rxbufloc   Rxbufdrain
-------------------------------------------------------------------------
ASIC0     0          0          0          0          0          0
ASIC1     0          0          0          0          0          0


cpu-queue-frames  retrieved  dropped    invalid    hol-block  stray
----------------- ---------- ---------- ---------- ---------- ----------
rpc               0          0          0          0          0
stp               1807       0          0          0          0
ipc               0          0          0          0          0
routing protocol  1516326    0          0          0          0
L2 protocol       27         0          0          0          0
remote console    0          0          0          0          0
sw forwarding     915        0          0          0          0
host              2014       0          0          0          0
broadcast         1766       0          0          0          0
cbt-to-spt        0          0          0          0          0
igmp snooping     1518651    0          0          0          0
icmp              45         0          0          0          0
logging           0          0          0          0          0
rpf-fail          0          0          0          0          0
queue14           0          0          0          0          0
cpu heartbeat     14116      0          0          0          0

ODD i have disabled IGMP SNOOPING...

On Fri, Apr 24, 2009 at 4:19 AM, Brian Turnbow <b.turnbow at twt.it> wrote:

> 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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>



-- 
//CL