nanog mailing list archives
Re: Default routes on BGP routers with full feeds
From: Chris Rogers <crogers () inerail net>
Date: Tue, 4 Nov 2014 20:41:43 -0500
We don't accept a default from anyone, but will send one to a customer when specifically requested. We heavily filter all incoming routes (bogon, 1918, and many others). We don't want data resorting to 0/0 and ::/0 when we specifically rejected the matching route at the import policy. Additionally, if your upstream isn't announcing a route to you, where are they going to send your traffic anyway? Regards, Chris Rogers +1.302.357.3696 x2110 http://inerail.net/ On Tue, Nov 4, 2014 at 5:42 PM, Owen DeLong <owen () delong com> wrote:
It seems in such a case, the traffic still doesn’t know where to go, but you don’t realize it because you have a default. Then you pass the traffic to one of the providers who doesn’t have a route for it and they drop it instead of you. If you see something different, then, by definition, said provider is not feeding you a full set of their tables, or, they, too, are depending on a default and are not receiving a full set of tables. OwenOn Nov 4, 2014, at 10:25 AM, Mike Walter <mwalter () 3z net> wrote: I have 5 providers and we get the default from all of them and fullrouting tables.I have seen cases where if there is no default route, the traffic didn'tknow where to go, even with full routes from all my providers.-Mike -----Original Message----- From: NANOG [mailto:nanog-bounces () nanog org] On Behalf Of Berry Mobley Sent: Tuesday, November 04, 2014 12:47 PM To: nanog () nanog org Subject: Default routes on BGP routers with full feeds I'm wondering how many of you who are multihomed also add default routes pointing to your providers from whom you are receiving full feeds. If so, why? If not, why not? Thanks, Berry
Current thread:
- Default routes on BGP routers with full feeds Berry Mobley (Nov 04)
- <Possible follow-ups>
- Re: Default routes on BGP routers with full feeds Blake Hudson (Nov 04)
- Re: Default routes on BGP routers with full feeds Fred (Nov 05)
- RE: Default routes on BGP routers with full feeds Mike Walter (Nov 04)
- Re: Default routes on BGP routers with full feeds Jared Mauch (Nov 04)
- Re: Default routes on BGP routers with full feeds Owen DeLong (Nov 04)
- Re: Default routes on BGP routers with full feeds Chris Rogers (Nov 04)
- Re: Default routes on BGP routers with full feeds Andreas Larsen (Nov 04)
- Re: Default routes on BGP routers with full feeds Marc Storck (Nov 05)
- RE: Default routes on BGP routers with full feeds Adam Greene (Nov 05)
- Re: Default routes on BGP routers with full feeds Owen DeLong (Nov 05)