[60230] in North American Network Operators' Group
RE: AS announcement question (easy)
daemon@ATHENA.MIT.EDU (Pete Templin)
Mon Aug 4 14:56:11 2003
Date: Mon, 4 Aug 2003 13:50:56 -0500
From: "Pete Templin" <pete.templin@texlink.com>
To: "Mike Donahue" <mdonahue@WATG.com>, <nanog@merit.edu>
Errors-To: owner-nanog-outgoing@merit.edu
Is it a class C, or a /24? =20
Regardless, longest match wins. If old provider is announcing your =
space as part of a larger announcement, you'll be a bad netizen for a =
few days because you're violating the RFCs concerning inconsistent AS, =
but your traffic will swing almost entirely over to new provider, and =
rather quickly. Traffic originating in old provider's network will =
likely still come in on your old link. (I've done this for three new =
customers in the past month.) If your old provider is specifically =
announcing your space as a /24, standard BGP path selection processes =
will take place all over the 'Net, and YMMV on the traffic balance. On =
or before disconnecting the link to old provider (if they are =
specifically announcing your /24), be sure to have them stop announcing =
that /24.
Pete Templin
Senior Staff Engineer
TexLink Communications
(210) 892-4183
pete.templin@texlink.com
-----Original Message-----
From: Mike Donahue [mailto:mdonahue@WATG.com]
Sent: Monday, August 04, 2003 1:22 PM
To: 'nanog@merit.edu'
Subject: AS announcement question (easy)
Hi, sorry for this low-level question, but at least I'm not posting in =
html.
:)
My company owns a class C, and we're switching ISPs. The "new" provider =
is
telling us that they can start announcing, without us having to tell the =
old
provider to stop announcing. I.e., a 2-3 day period where both are
announcing our class C.
This conflicts with my extremely (admittedly)limited knowledge. Can =
someone
let me know if this is OK/not OK?
Thanks in advance,
Mike
Michael Donahue
WATG
(949) 574-8500 x261
