[119289] in North American Network Operators' Group
RE: Layer 2 vs. Layer 3 to TOR
daemon@ATHENA.MIT.EDU (Raj Singh)
Thu Nov 12 15:07:38 2009
X-Barracuda-Envelope-From: raj.singh@demandmedia.com
From: Raj Singh <raj.singh@demandmedia.com>
To: 'Paul Stewart' <pstewart@nexicomgroup.net>, "nanog@nanog.org"
<nanog@nanog.org>
Date: Thu, 12 Nov 2009 12:04:06 -0800
In-Reply-To: <C0A98BB6DAFAAB46A78BBA2C51B98F3E9FEB8E@nexus.nexicomgroup.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
We are actually looking at going Layer 3 all the way to the top of rack and=
make each rack its own /24. This provides us flexibility when doing mainte=
nance (spanning-tree). Also, troubleshooting during outages is much easier =
by using common tools like ping and trace routes.
I want to make sure this is something other people are doing out there and =
want to know if anyone ran into any issues with this setup.
Thanks,
Raj Singh=A0=A0=A0|=A0=A0=A0=A0Director Network Engineering
_________________________________
Demand Media | eNom, Inc.
Direct: 425.974.4679
15801 NE 24th St.
Bellevue, WA 98008
Raj.Singh@DemandMedia.com
-----Original Message-----
From: Paul Stewart [mailto:pstewart@nexicomgroup.net]=20
Sent: Thursday, November 12, 2009 11:53 AM
To: Raj Singh; nanog@nanog.org
Subject: RE: Layer 2 vs. Layer 3 to TOR
We are heading towards that type of deployment beginning next year with
Juniper EX4200 switches in a redundant configuration. This will be pure
Layer2 in nature on the switches and they will "uplink" to Juniper
M10i's for layer3... the power savings, space savings etc over
traditional Cisco 6500 chassis (plus all the cabling between cabinets
which is in our case a nightmare) made this a pretty easy choice... and
price too..;)
Somewhere on Juniper's website in the product info section they have
deployment whitepapers on this kind of stuff if that's of interest....
Hope this helps..
Paul
-----Original Message-----
From: Raj Singh [mailto:raj.singh@demandmedia.com]=20
Sent: November-12-09 2:49 PM
To: 'nanog@nanog.org'
Subject: Layer 2 vs. Layer 3 to TOR
Guys,
I am wondering how many of you are doing layer 3 to top of rack switches
and what the pros and cons are. Also, if you are doing layer 3 to top of
rack do you guys have any links to published white papers on it?
Thanks,
Raj Singh
=20
---------------------------------------------------------------------------=
-
"The information transmitted is intended only for the person or entity to w=
hich it is addressed and contains confidential and/or privileged material. =
If you received this in error, please contact the sender immediately and th=
en destroy this transmission, including all attachments, without copying, d=
istributing or disclosing same. Thank you."
