Cisco uRPF failures

Christopher Morrow christopher.morrow at gmail.com
Sat Sep 6 14:13:06 CDT 2008


On 9/6/08, Anton Kapela <tkapela at gmail.com> wrote:
> On Thu, Sep 4, 2008 at 11:35 AM, Jo Rhett <jrhett at netconsonance.com> wrote:
>
>  > found a network operator using uRPF on Cisco gear.
>  >  (note: network operator. it's probably fine for several-hundred-meg
>  > enterprise sites)
>
>
> Forgive me, but what does bits/sec have to do with anything?
>

it's possible that on some platforms the uRPF check happens on the
main processor, or on a linecard processor. So, bps rates (proxied for
by pps rates) matter greatly, on those platforms.

-Chris




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