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RE: Level 3 BGP Advertisements
From: Paul Vinciguerra <pvinci () VinciConsulting com>
Date: Wed, 29 Aug 2012 20:08:52 +0000



-----Original Message-----
From: Blake Dunlap [mailto:ikiris () gmail com] 
Sent: Wednesday, August 29, 2012 4:00 PM
To: nick () flhsi com
Cc: nanog () nanog org
Subject: Re: Level 3 BGP Advertisements

On Wed, Aug 29, 2012 at 2:56 PM, Nick Olsen <nick () flhsi com> wrote:

I hear you guys, It's done that way for a bit of traffic steering.

If I could get away with just the aggregates I would, Trust me.

Nick Olsen
Network Operations (855) FLSPEED  x106

----------------------------------------
 From: "Berry Mobley" <berry () gadsdenst org>
Sent: Wednesday, August 29, 2012 3:45 PM
To: nanog () nanog org
Subject: Re: Level 3 BGP Advertisements

[...]

Please, unless you really know why you need to do otherwise, just 
originate your aggregates.

+1



That should be unnessecary, the local prefs should already be winning as a customer vs transit/peer for equal prefix 
length.

As an aside, generally inbound traffic steering as a reason for disaggregation is fairly frowned upon by the community 
at large as it effectively makes everyone else pay more in additional hardware cost for your savings.


-Blake


If you have provided addressing from your aggregate to your customer and they have indicated that they are 
multi-homing, you need to preserve their prefix-length in your outbound advertisements, or the redundant provider 
carries the inbound traffic.  Is this also frowned on?  To me, this is the multihoming tax we all pay for.

Paul




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