[nsp] ip verify unicast reverse-path confirmation?

[lee.e.rian at census.gov]

I think uRPF handling depends on the hardware
- Sup 1: everything gets forwarded to the MSFC
- Sup 2: handled in hardware

Lee


========== original message ====================
Message: 8
Date: Thu, 4 Dec 2003 16:58:54 +0100
From: Nicolas Sayer <Nicolas.Sayer at inria.fr>
Subject: Re: [nsp] ip verify unicast reverse-path confirmation?
To: cisco-nsp at puck.nether.net
Message-ID: <C2C60CF6-2672-11D8-98A2-000A95887BEE at inria.fr>
Content-Type: text/plain; charset=US-ASCII; format=flowed

hello all,

off topic question about "ip verify unicast reverse-path", i had to
take out of my WAN interface configuration because it was burning out
the CPU (interupts). Does each packet (from one TCP flow for example)
HAS to have it's source address checked against the routing table, thus
sent to the CPU ? couldn't cef take care of stamping the source address
as : ok

fyi: i have a 6500 switch enhanced with an msfc1 for routing,

             cheers, Nick.

On jeudi, nov 6, 2003, at 20:01 Europe/Paris, Bob Snyder wrote:

> Is there any command to see the effects of the "ip verify unicast
> reverse-path" command? Packet drop counters, etc?
>
> Bob
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