[168175] in North American Network Operators' Group
Re: best practice for advertising peering fabric routes
daemon@ATHENA.MIT.EDU (Patrick W. Gilmore)
Tue Jan 14 22:11:39 2014
From: "Patrick W. Gilmore" <patrick@ianai.net>
In-Reply-To: <CAL9jLaZEWTwi0bLqGxDq3Hv3vGM7+RwxZw3pMgs6cp0HpcaW6A@mail.gmail.com>
Date: Tue, 14 Jan 2014 22:11:06 -0500
To: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Pardon the top post, but I really don't have anything to comment below =
other than to agree with Chris and say rfc5963 is broken.
NEVER EVER EVER put an IX prefix into BGP, IGP, or even static route. An =
IXP LAN should not be reachable from any device not directly attached to =
that LAN. Period.
Doing so endangers your peers & the IX itself. It is on the order of not =
implementing BCP38, except no one has the (lame, ridiculous, idiotic, =
and pure cost-shifting BS) excuse that they "can't" do this.
--=20
TTFN,
patrick
On Jan 14, 2014, at 21:22 , Christopher Morrow <morrowc.lists@gmail.com> =
wrote:
> On Tue, Jan 14, 2014 at 9:09 PM, Cb B <cb.list6@gmail.com> wrote:
>> On Jan 14, 2014 6:01 PM, "Eric A Louie" <elouie@yahoo.com> wrote:
>>>=20
>>> I have a connection to a peering fabric and I'm not distributing the
>> peering fabric routes into my network.
>>>=20
>=20
> good plan.
>=20
>>> I see three options
>>> 1. redistribute into my igp (OSPF)
>>>=20
>>> 2. configure ibgp and route them within that infrastructure. All =
the
>> default routes go out through the POPs so iBGP would see packets =
destined
>> for the peering fabric and route it that-a-way
>>>=20
>>> 3. leave it "as is", and let the outbound traffic go out my =
upstreams and
>> the inbound traffic come back through the peering fabric
>>>=20
>>>=20
>=20
> 4. all peering-fabric routes get next-hop-self on your peering router
> before going into ibgp...
> all the rest of your network sees your local loopback as nexthop and
> things just work.
>=20
>>> Advantages and disadvantages, pros and cons? Recommendations?
>> Experiences, good and bad?
>>>=20
>>>=20
>>> I have 5 POPs, 2 OSPF areas, and have not brought iBGP up between =
the
>> POPs yet. That's another issue completely from a planning =
perspective.
>>>=20
>>> thanks
>>> Eric
>>>=20
>>=20
>> http://tools.ietf.org/html/rfc5963
>>=20
>> I like no-export
>=20
