[36013] in North American Network Operators' Group
Re: EP.net Issues
daemon@ATHENA.MIT.EDU (John Fraizer)
Wed Mar 21 20:59:33 2001
Date: Wed, 21 Mar 2001 20:48:04 -0500 (EST)
From: John Fraizer <nanog@Overkill.EnterZone.Net>
To: Joe Wood <joew@mail.flyingcroc.net>
Cc: bmanning@vacation.karoshi.com, nanog@merit.edu
In-Reply-To: <Pine.BSF.4.21.0103211346390.83021-100000@gilliam.users.flyingcroc.net>
Message-ID: <Pine.LNX.4.21.0103212041270.7674-100000@Overkill.EnterZone.Net>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Errors-To: owner-nanog-outgoing@merit.edu
On Wed, 21 Mar 2001, Joe Wood wrote:
> On Wed, 21 Mar 2001, John Fraizer wrote:
>
> > Joe, a LOT of providers don't accept 198.32.4.0/24. We see it on 2 out
> > of four paths. The other two providers are filtering it.
>
> I can understand this; However, if I see a path, I _should_ (in theory) be
> able to reach the destination network.
>
> I'm not sure why routing policy is even being brought up right now.
>
People have been known to default into networks as a "oh crap" backup. In
that case, even if there wasn't a BGP route in your tables to the net, you
would hand it off to your "default" who may or may not have a bgp route to
that network. It causes the same exact behavior you're seeing now. Prior
to being multihomed, I ran into this trying to go to the EXACT same site
because we were defaulting into a network that (STILL) filters
198.32.4.0/24.
>
> Also note that ISIs border is now responding with !X:
>
>
> PBI seems to be fine, perhaps another border router?
>
> 10 ded3-fe8-0-0.lsan03.pbi.net (206.13.29.130) [AS 5676] 8 msec 8 msec 12
> msec
> 11 uscisi-usc-630375.cust-rtr.pacbell.net (209.232.128.190) [AS 5673] 20
> msec 20 msec 16 msec
> 12 isi-usc-atm.ln.net (130.152.128.1) [AS 226] 20 msec 24 msec 20 msec
> 13 bah.isi.edu (128.9.160.26) [AS 226] 24 msec 24 msec 24 msec
> 14 flag.ep.net (198.32.4.13) [AS 226] 20 msec 20 msec 20 msec
>
> Its interesting how it has suddenly gone from !A to !X.
>
> Joe
>
It's working again for us.
---
John Fraizer
EnterZone, Inc
