Re: Policy Based routing on 6500

You should pay attention at this point.

 Enabling Fast-Switched Policy Routing

IP policy routing can also be fast switched. Prior to fast-switched policy
routing, policy routing could only be process switched, which meant that on
most platforms, the switching rate was approximately 1000 to 10,000 packets
per second. Such rates were not fast enough for many applications. Users
that need policy routing to occur at faster speeds can now implement policy
routing without slowing down the router.

Fast-switched policy routing supports all of the *match* commands and most
of the *set* commands, except for the following restrictions:

 The *set ip default* command is not supported.

 The *set interface* command is supported only over point-to-point links,
unless a route cache entry exists using the same interface specified in the
*set interface* command in the route map. Also, at the process level, the
routing table is consulted to determine if the interface is on a reasonable
path to the destination. During fast switching, the software does not make
this check. Instead, if the packet matches, the software blindly forwards
the packet to the specified interface.

Policy routing must be configured before you configure fast-switched policy
routing. Fast switching of policy routing is disabled by default. To have
policy routing be fast switched, use the following command in interface
configuration mode:

*Command ***

*Purpose ***

Router(config-if)# *ip route-cache policy *

Enables fast switching of policy routing.

2009/6/8 Shine Joseph <shinejoseph_at_dodo.com.au>

> Thanks Joe.
>
> Any other coments are welcome.
>
> Cheers,
> Shine
>
> ----- Original Message ----- From: "Joe Astorino" <jastorino_at_ipexpert.com>
> To: "'Shine Joseph'" <shinejoseph_at_dodo.com.au>; <ccielab_at_groupstudy.com>
> Sent: Monday, June 08, 2009 4:10 PM
> Subject: RE: Policy Based routing on 6500
>
>
>
> I have seen it implemented in a large scale campus LAN environment with no
>> notiaceable loss in performance. This particular instance was your
>> standard
>> core/distrib/access setup spanning quite a large campus for a
>> manufacturing
>> plant.
>>
>>
>> Regards,
>>
>> Joe Astorino
>> CCIE #24347 (R&S)
>> Sr. Support Engineer - IPexpert, Inc.
>> URL: http://www.IPexpert.com <http://www.ipexpert.com/>
>>
>> -----Original Message-----
>> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
>> Shine Joseph
>> Sent: Monday, June 08, 2009 2:55 AM
>> To: ccielab_at_groupstudy.com
>> Subject: Policy Based routing on 6500
>>
>> Hi,
>>
>> Has anyone done PBR on a 6500 with Sup720? I am looking this from a
>> performance perspective.
>>
>> Any pointers are appreciated.
>>
>> TIA,
>> Shine
>>
>>
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