RE: external L2 ethernet connections

["Paul Stewart" <pstewart () nexicomgroup net>]

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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