[117526] in North American Network Operators' Group
RE:
daemon@ATHENA.MIT.EDU (Michael Ruiz)
Thu Sep 17 08:47:29 2009
From: "Michael Ruiz" <mruiz@telwestservices.com>
Date: Thu, 17 Sep 2009 07:46:46 -0500
To: "Richard A Steenbergen" <ras@e-gerbil.net>,
"Michael Ruiz" <mruiz@telwestservices.com>
Cc: Brian Dickson <Brian.Dickson@concertia.com>, nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
And is that the one that traverses the 3550 with the 1500 byte MTU?=20
Both connection traver through the 3550. I will disable the command on =
7206 vxr. thanks
-----Original Message-----
From: "Richard A Steenbergen" <ras@e-gerbil.net>
To: "Michael Ruiz" <mruiz@telwestservices.com>
Cc: "Brian Dickson" <Brian.Dickson@concertia.com>; "nanog@nanog.org" =
<nanog@nanog.org>
Sent: 9/16/09 8:58 PM
Subject: Re: <Keepalives are temporarily in throttle due to closed TCP =
window>
On Wed, Sep 16, 2009 at 06:47:10PM -0500, Michael Ruiz wrote:
> >Either a) you have the mtu misconfigured on that 7206vxr
>=20
> That part is where I am at a loss. How is it the 6509 can establish a
> IBGP session with a 7606 when it has to go through the 7206 VXR? The
> DS-3s are connected to the 7206 VXR. To add more depth to the story. =
I
> have 8 IBGP sessions that are connected to the 7206 VXR that have been
> up and running for over a year. Some of the sessions traverse the =
DS-3s
> and or a GigE long haul connections. There are a total 10 Core =
routers
> that are mixture of Cisco 7606, 6509s, 7206 VXR w/ NPE400s or G1s. =
Only
> this one IBGP session out of 9 routers is not being established. =
Since
> I have a switch between the 7606 and 7206, I plan to put a packet
> capture server and see what I can see.=20
And is that the one that traverses the 3550 with the 1500 byte MTU?=20
Re-read what we said. You should be able to test the MTU theory by=20
disabling path-mtu-discovery, which will cause MSS to fail back to the=20
minimum 576.
--=20
Richard A Steenbergen <ras@e-gerbil.net> =
http://www.e-gerbil.net/ras
GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 =
2CBC)
