[175850] in North American Network Operators' Group
Re: Default routes on BGP routers with full feeds
daemon@ATHENA.MIT.EDU (Owen DeLong)
Tue Nov 4 17:47:32 2014
X-Original-To: nanog@nanog.org
From: Owen DeLong <owen@delong.com>
In-Reply-To: <D7092CF606B8964193F248C92106B7811372B4AC@zionex01.ZION.local>
Date: Tue, 4 Nov 2014 14:42:18 -0800
To: Mike Walter <mwalter@3z.net>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
It seems in such a case, the traffic still doesn=E2=80=99t know where to =
go, but you don=E2=80=99t realize it because you have a default.
Then you pass the traffic to one of the providers who doesn=E2=80=99t =
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.
Owen
> On Nov 4, 2014, at 10:25 AM, Mike Walter <mwalter@3z.net> wrote:
>=20
> I have 5 providers and we get the default from all of them and full =
routing tables.
>=20
> I have seen cases where if there is no default route, the traffic =
didn't know where to go, even with full routes from all my providers. =20=
>=20
> -Mike
>=20
> -----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
>=20
> I'm wondering how many of you who are multihomed also add default=20
> routes pointing to your providers from whom you are receiving full =
feeds.
>=20
> If so, why? If not, why not?
>=20
> Thanks,
>=20
> Berry
