[112196] in North American Network Operators' Group
RE: external L2 ethernet connections
daemon@ATHENA.MIT.EDU (Paul Stewart)
Fri Feb 20 09:48:40 2009
Date: Fri, 20 Feb 2009 09:48:21 -0500
In-Reply-To: <499EC121.9090204@ttec.com>
From: "Paul Stewart" <pstewart@nexicomgroup.net>
To: "Joe Maimon" <jmaimon@ttec.com>,
<nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
http://www.ams-ix.net/technical/config_guide/
has some great info specific to IX connections..
Paul
-----Original Message-----
From: Joe Maimon [mailto:jmaimon@ttec.com]
Sent: Friday, February 20, 2009 9:42 AM
To: nanog@nanog.org
Subject: external L2 ethernet connections
Does anyone have a best practice list of things to disable/filter/turn
off on ethernet ports l2 connected to other AS's
cdp
stp
switchport negotiate
vtp
if trunking, limit vlans, no vlan1
So on so forth.
Switches do so many darn things all by themselves, as any packet capture
shows.
Thanks,
Joe
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