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RE: MPLS aware NICs

  • From: Ravi Bhagavathula <ravi.bhagavathula@wichita.edu>
  • Date: Fri, 20 Aug 2004 15:00:28 -0500
  • Cc: mpls-ops@mplsrc.com
  • Organization: Wichita State University
  • Resent-Date: Fri, 20 Aug 2004 16:28:20 -0400
  • Thread-Index: AcSGvl3enHQfHvQ2SZu+crD75n8GcQAAE/3A
  • To: sthaug@nethelp.no, puddinghead_wilson007@yahoo.co.uk

When you talk about pure Layer 2 networks and their scalability, are you
also referring to layer 2 circuits built around AToM and/or L2TPv3? Can you
recommend a few starters to read up on the scalability issues related to
layer 3 networks and layer 2 circuits (built around AToM)? 


Ravi Bhagavathula, PhD
324 Wallace Hall
Electrical and Computer Engg. Dept.
Wichita State University,
Wichita, KS 67260-0044
Telephone: (316) 978-3494
Fax: (316) 978-5408


-----Original Message-----
From: sthaug@nethelp.no [mailto:sthaug@nethelp.no] 
Sent: Friday, August 20, 2004 8:13 AM
To: puddinghead_wilson007@yahoo.co.uk
Cc: mpls-ops@mplsrc.com
Subject: Re: [MPLS-OPS]: MPLS aware NICs

> > Ethernet interfaces are very popular for customers here in Norway 
> > too - but again, your core network could be completely different.
> 
> yes, but no reason why ethernet would not scale...
> 
> Let me check what the latest rage support on ZX modules are...a few 
> 100 kms? how costly is it to put up another switch after every few 
> 100kms?

The reason pure Ethernet L2 networks don't scale well have little or nothing
to with distance limitations for ZX GBICs (which, by the way, typically is
70 to 100 km).

If you don't know why scaling pure Ethernet L2 networks is difficult I would
encourage reading up on this before trying to continue the discussion.

Steinar Haug, Nethelp consulting, sthaug@nethelp.no

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