[nsp] Cisco 7600 and uRPF

[Stacy J. Brandenburg]

According to some docs I have on the 720s - it is enabled on a 
per-VLAN-Basis.  I was actually getting ready to start some tests today 
and looked up to see this thread.  Guess I will find out soon enough.

"Once the feature is enabled on an interface (per-Vlan-Basis), the 
incoming packet is compared to the CEF tables via a reverse lookup."


Robert A. Hayden wrote:
> To my knowledge they didn't "fix" it in the 720.  We use it all over our 
> network to support our use of a blackhole router and it works fine on a 
> Sup2.
> 
> On Tue, 2 Mar 2004, Jared Mauch wrote:
> 
> 
>>On Tue, Mar 02, 2004 at 09:34:20AM -0700, Clinton Work wrote:
>>
>>>About six months ago there was a discussion on uRPF on the Catalyst 6500s
>>>(Hybrid IOS) with
>>>mixed results. Are people using uRPF on the 7600s (Native IOS) with good
>>>results? I'm
>>>looking at IOS 12.1(13)E9 and later.
>>
>>	Which sup?
>>
>>	You're not expecting to be able to do mixed-mode u-rpf are
>>you?
>>
>>	ie: loose on some interfaces, strict on the others?
>>
>>	the box will only do one 'global' u-rpf mode on the sup2.
>>the sup1 it's done in software only, not in hw.
>>
>>	i can't recall if they "fixed" this in the 720.  i can go
>>check my notes in a few ..
>>
>>	- jared
>>	
>>
> 
> 
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-- 
========================================================
= Stacy J. Brandenburg                    Red Hat Inc. =
= Sr. Network Engineer           http://www.redhat.com =
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