[c-nsp] NBAR on SVI on 7600 w/ Sup720

Alex K. nsp.lists at gmail.com
Tue Jan 22 04:49:59 EST 2013


* say explicitly ...
On Jan 22, 2013 11:47 AM, "Alex K." <nsp.lists at gmail.com> wrote:

> Hi Oliver,
>
> Exactly - not supported. It implies that *if it works (not on SIP-200), it
> must be software'.
>
> I came across this document before I sent the question. As it seems, that
> what I'll use.
>
> I'm looking for a document that say implicitly 'NBAR implementation is
> software based' to be sure we didn't run into some sort of
> bug/mis-configuration.
>
> Thank you.
>
> Best Regards,
> Alex.
> On Jan 22, 2013 8:04 AM, "Oliver Boehmer (oboehmer)" <oboehmer at cisco.com>
> wrote:
>
>> Alex,
>>
>>
>> On 22/01/2013 01:19, "Alex K." <nsp.lists at gmail.com> wrote:
>>
>> >Hi Pete,
>> >
>> >We're running 12.2(33)SRA6.
>> >
>> >
>> >On SIP-200 it's running fine (as expected). Configuring
>> >NBAR-using-policy-map on an *SVI*, causes high CPU ­ Interrupts.
>> >
>> > I do believe it's being punted to a CPU.
>> >
>> >But this time I need a document that clearly states that ­ i.e. on
>> SIP-200
>> >by hardware, on SVI by software ­ and this is not a bug/some other
>> >malfunctioning.
>> >
>> >I'm asking for a document from which we can understand that, yes, using
>> >NBAR on an SVI will make those packets punted. Technically I agree with
>> >you
>> >completely, most likely that¹s what happening.
>>
>>
>>
>> http://www.cisco.com/en/US/docs/routers/7600/ios/15S/configuration/guide/qo
>> s.html<http://www.cisco.com/en/US/docs/routers/7600/ios/15S/configuration/guide/qos.html>says "The PFC does not support Network-Based Application
>> Recognition (NBAR).", this is valid for earlier SW releases as well. So
>> your config on the SVI is not supported.
>>
>> SIP200 Datasheets clearly state NBAR support.
>>
>>         oli
>>
>>


More information about the cisco-nsp mailing list