Re: PBR on 6509 cpu utilization

Back before Wireless Guest Anchor Mobility came about.. Enterprise network
engineers were told by Cisco SE's to use PBR even on 6500's to place Guest
Wireless users into GRE-Tunnels and drop them off in a DMZ to avoid routing
guest traffic directly on the core network....

On Tue, Oct 9, 2012 at 5:09 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar> wrote:

> Shameless reproduction from cisco-nsp:
>
> See:
> http://www.cisco.com/en/US/**docs/switches/lan/**catalyst6500/ios/12.2SX<http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX> /configuration/guide/layer3.
> **html#wpmkr1033564
>
> The Policy Feature Card (PFC) and any
> Distributed Feature Cards (DFCs) provide hardware
> support for policy-based routing (PBR) for
> route-map sequences that use the match ip
> address, set ip next-hop, and ip default next-hop PBR keywords.
>
>
> HTH,
> Tim
>
> but my memory hints are that you can do more than that with PBR.
> So keep an eye on CPU usage and on TCAM resources.
>
> -Carlos
>
> John Neiberger @ 09/10/2012 16:29 -0300 dixit:
>
> According to the docs, PBR has been CEF-switched since 12.0. It
>> shouldn't be causing a lot of CPU spiking. As long as CEF is enabled,
>> PBR will be CEF-switched.
>>
>> John
>>
>> On Tue, Oct 9, 2012 at 1:12 PM, me you <anunda19_at_gmail.com> wrote:
>>
>>> Does anyone have experience running PBR on a 6509 sup 2 or sup 720. I
>>> would
>>> like to run PBR but one of the reason not to run it is because it will
>>> spike the CPU. Is there any validaly behind that claim? Is there any
>>> cisco
>>> doc's that would list the case examples. I tried google but did not find
>>> anything usefull. Our current CPU is 3% with a 1Gig uplink. I don't see
>>> how
>>> it will increase the CPU that much. I think it is just B/S because people
>>> are afraid of change.
>>>
>>> Thanks
>>> Rob
>>>
>>>
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>>
>>
>>
>>
>>
>>
> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina
>
>
> Blogs and organic groups at http://www.ccie.net
>
> ______________________________**______________________________**
> ___________
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Received on Tue Oct 09 2012 - 17:16:26 ART