[106794] in North American Network Operators' Group
Re: impossible circuit
daemon@ATHENA.MIT.EDU (Jared Mauch)
Wed Aug 13 14:34:16 2008
Date: Wed, 13 Aug 2008 14:34:06 -0400
From: Jared Mauch <jared@puck.nether.net>
To: Andy Johnson <andyjohnson@ij.net>
In-Reply-To: <001001c8fd72$43353a40$0100a8c0@oicu812>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
On Wed, Aug 13, 2008 at 02:27:33PM -0400, Andy Johnson wrote:
>> working, and keeps the dupes from coming back at us, because the ppp
>> encapsulated packets aren't understood by Sprint's routers running [I
>> assume] hdlc...so they can't forward the packets.
>
> AFAIK, routers don't just forward IP packets because they "see" them.
> That destination MAC address needs to be set to something assigned to the
> router doesn't it? Unless somehow they've crossed you into some sprint
> router running IRB? That might be the only exception I can think of.
The circuit involved in this case is a DS3, whatever you get will be
processed on the other side unless it's blocked by uRPF or some sort
of ACL.
- Jared
--
Jared Mauch | pgp key available via finger from jared@puck.nether.net
clue++; | http://puck.nether.net/~jared/ My statements are only mine.
