North American Network Operators Group
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RE: IPv6

  • From: Daryl G. Jurbala
  • Date: Fri Jun 13 10:24:04 2003
Title: Message
I guess that means vendor C has no excuse on the 7200 VXR series (and I believe a few of the newer models).  But I still don't see anthing fantastically IPv6 happening there.
 
Daryl G. Jurbala
Introspect.net Consulting
Tel: +1 215 825 8401
Fax: +1 508 526 8500
http://www.introspect.net

PGP Key: http://www.introspect.net/pgp 
-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Friday, June 13, 2003 12:48 AM
To: [email protected]
Cc: [email protected]
Subject: Re: IPv6

 [.....] 

Most L3 switches shipping today (e.g. the product in question) have
particular ethertypes and destination address offsets hardcoded into their
ASICs.  It's not a matter of supporting 128-bit addresses -- they simply
doesn't understand IPv6's header any more than they do DECnet or AppleTalk.

While allocation policies may have an effect on how IPv6 FIBs are most
efficiently stored, address length is a fairly small part of the problem
when you're talking about redesigning every ASIC to handle both IPv4 and
IPv6.

 [....]