[c-nsp] GSR CPU Process is very HIGH 95%

[bharath kondi]

Dear All,
It is a Tagged port connecting to our multi layer switch, where we tagged so
many vlans which is not needed (This port is configured for IBGP with a
dot1q vlan on GSR, and the other side multilayer switch allowing so many
vlans, this is configured by earlier engineer, right now we are not using
IBGP on this port). Once I shutdown the port everything back to normal.

As Jeff mentioned below, it is true in my case. These unknown packets coming
from our multilayer switch to GSR made CPU process high.

//
Net Input is a process that handles "unknown" types of Packets.  These
packets get sent directly to NULL, thus being black-holed.  The CPU is
spiking because your input queue is getting hit hard with whatever these
packets are and is having to make a send to Null/discard decision.
// --- By Jeff


Regards,

Bharath Kondi


On Wed, Oct 7, 2009 at 9:22 PM, Oliver Boehmer (oboehmer) <
oboehmer at cisco.com> wrote:

>  where was this cable connected to?
>
>  ------------------------------
> *From:* bharath kondi [mailto:bluffmaster4hearts at gmail.com]
> *Sent:* Wednesday, October 07, 2009 15:21
> *To:* Oliver Boehmer (oboehmer)
> *Cc:* cisco-nsp at puck.nether.net; BHARATH KONDI; bharath at vtelecoms.com.my
> *Subject:* Re: [c-nsp] GSR CPU Process is very HIGH 95%
>
> Thanks Oliver. My problem solved. I was disconnecting each and every cable
> connected to GSR and check the process and found one unwanted cable
> connecting and generating traffic. Now everything back to normal.
> Thanks for your support.
>
> Regards,
> Bharath Kondi
>
>
> On Wed, Oct 7, 2009 at 8:57 PM, Oliver Boehmer (oboehmer) <
> oboehmer at cisco.com> wrote:
>
>> bharath kondi <> wrote on Wednesday, October 07, 2009 14:32:
>>
>> > Hi All,
>> >
>> > I am seeing a strange thing in our GSR 12000, CPU process reached
>> > 95%. Below is the findings, can anyone help me ASAP.
>> >
>> > The highest usage is Net Input. What is Net Input? Please help me
>> > guys.
>> >
>> > Thanks in advance.
>> >
>> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> >
>> >  66   1485974962884865916          0 17.91% 15.99% 16.04%   0 Net
>> > Input
>> >
>> >
>> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> >
>> > GW-01-KLS-MY#show processes cpu
>> >
>> > CPU utilization for five seconds: 95%/71%; one minute: 96%; five
>> > minutes: 95%
>>
>> are you switching traffic across the PRP/GRP's Management Ethernet
>> ports? Those must only be used for management, i.e. traffic from/to the
>> GSR ..
>>
>>        oli
>>
>
>
>
>
>


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