[c-nsp] PBR on sup720

[Xu Hu]

Hi Arie, i heard there should depend on which ios version and which kind of
configirations u use will impact the action about hw or software switching.
On Nov 1, 2012 12:56 AM, "Arie Vayner (avayner)" <avayner at cisco.com> wrote:

> Yes, same concept.
> Better run on SXI or later to avoid issues with punting to the RP if the
> next-hop is down...
>
> Another option is to use something like that:
>
>
> track 1 interface GigabitEthernet3/1 line-protocol
>  delay up 15
> !
> track 2 interface GigabitEthernet3/2 line-protocol
>  delay up 15
> !
> route-map test2 permit 10
>  match ip address 100
>  set ip next-hop verify-availability 10.2.3.3 10 track 1
>  set ip next-hop verify-availability 10.2.2.3 20 track 2
>
>
> Arie
>
> -----Original Message-----
> From: Paul Magee [mailto:pmagee at williamhill.co.uk]
> Sent: Wednesday, October 31, 2012 09:13
> To: Arie Vayner (avayner)
> Cc: cisco-nsp at puck.nether.net
> Subject: RE: PBR on sup720
>
> Hi Arie,
>
> Does this also apply to the SX version?
>
> Thanks,
>
> Paul
>
> -----Original Message-----
> From: Arie Vayner (avayner) [mailto:avayner at cisco.com]
> Sent: 31 October 2012 15:59
> To: Paul Magee; cisco-nsp at puck.nether.net
> Subject: RE: PBR on sup720
>
> Paul,
>
> Nop... All packets are handled in HW assuming your actions are supported...
> Performance should be the same as regular routing as long as it's done in
> HW and you do not exceed TCAM resources.
>
> In some older IOS versions there were issues with what happens when the
> next hop is not available... Packets were punted to the RP. This is not the
> case after SRD (I think).
>
> Check out:
>
> http://www.cisco.com/en/US/partner/docs/routers/7600/ios/12.2SR/configuration/guide/cef.html
>
> http://www.cisco.com/en/US/partner/docs/routers/7600/ios/12.2SR/configuration/guide/layer3.html#wp1027016
>
> Arie
>
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:
> cisco-nsp-bounces at puck.nether.net] On Behalf Of Paul Magee
> Sent: Wednesday, October 31, 2012 08:40
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] PBR on sup720
>
> Hello,
>
>
>
> Does anyone have any experience of using policy based routing with
> vrf-lite on a Sup 720?
>
>
>
> I gather that the first packet is handled in software and from that point
> on the route exists in the cef table. Is that a big performance hit? What
> sort of throughput/number of connections can I expect to be able to handle
> before everything comes crashing to its knees? Do Cisco have any figures on
> this hidden away anywhere?
>
>
>
> Thanks,
>
>
>
> Paul
>
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