-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Jeff 
Wheeler
Sent: Thursday, January 03, 2013 6:34 PM
To: Tony Li
Cc: [email protected]; [email protected]
Subject: Re: [Idr] [GROW] I-D Action: 
draft-ietf-grow-ops-reqs-for-bgp-error-handling-06.txt

On Thu, Jan 3, 2013 at 8:01 PM, Tony Li <[email protected]> wrote:
> Example please?  Assuming that the prefixes are parsed out of the message 
> correctly, then treating them as withdrawn should be hazard free.

If a transit router in your AS treats-as-withdraw a prefix, other routers may 
try to send traffic across it, but the router which has treated-as-withdraw 
will either have no information for that route, or it will have made a 
different bestpath choice.  This could cause a loop or a blackhole.

[SR] If the transit router treated the prefix as "withdrawn", then it will 
remove the corresponding path. If there are no other paths for that net, then 
the router would send withdraws for that prefix to its own peers. So no other 
router would send traffic to it in the steady state.

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