-----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