nanog mailing list archives

Re: external L2 ethernet connections


From: isabel dias <isabeldias1 () yahoo com>
Date: Fri, 20 Feb 2009 06:55:38 -0800 (PST)

Joe, 

I take credit card payments ....and we can agree on a daily rate ...as after all you are into "IT Consultancy". 
Just use the available search engine optimizers to build your knowledge based by performing the "black had v white hat" 
searches :-)


I am here still ....what is your budget?  



--- On Fri, 2/20/09, Joe Maimon <jmaimon () ttec com> wrote:

From: Joe Maimon <jmaimon () ttec com>
Subject: external L2 ethernet connections
To: nanog () nanog org
Date: Friday, February 20, 2009, 3:41 PM
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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