[nsp] cat 4500/Sup IV - no uRPF?

[Thomas Kernen]

Hi Michael,

I answered this one a few weeks ago on the list, but things are still
the same. I'm running a few Cat 4K's and I can confirm that uRPF doesn't
exist. What you want to look into is the IP Source Guard and Dynamic ARP
inspection features. More in depth and granularity that uRPF IMHO.

Thomas

----- Original Message ----- 
From: "Michael Sinatra" <michael at rancid.berkeley.edu>
To: "Cisco Nsp" <cisco-nsp at puck.nether.net>
Sent: Friday, December 05, 2003 12:40 AM
Subject: [nsp] cat 4500/Sup IV - no uRPF?


> I am testing a cat 4506 w/Sup IV in layer-3 mode (i.e. as a router)
and
> noticed that it doesn't support unicast RPF.  This appears to be
> confirmed by the following cisco document:
>
>
http://www.cisco.com/en/US/products/hw/switches/ps4324/products_white_paper09186a00801b1d13.shtml
>
> The IOS version I am running is 12.1(20)EW.  Does anyone know if there
> are plans to add uRPF in a later release, or if there is any
combination
> of 4000/4500 hardware and/or IOS for that box that supports uRPF?
>
> I do plan to ask my cisco rep, but I was wondering if anyone here had
> any info.  uRPF is a critical feature for us in any layer-3 box.
>
> thanks,
> michael
>
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