DSL Network Design Question

Jon Lewis jlewis at lewis.org
Sun Aug 14 15:14:05 UTC 2005


On Sun, 14 Aug 2005, Robert E.Seastrom wrote:

> Peter Dambier is right that his ISP is avoiding .255 and .0.  Older MS
> stacks (still plenty prevalent in the wild) get indigestion when
> handed those final octets, notwithstanding the fact that they aren't
> broadcast addresses on any network larger than a /24 or for one-ended
> use like PPP...  if you don't exclude them you'll end up putting
> additional load on your help desk.

Believe it or not, even not too old (12.1T) IOS versions have issues 
forwarding packets to .255 addresses.

----------------------------------------------------------------------
  Jon Lewis                   |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                | 
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________



More information about the NANOG mailing list