From: Howard C. Berkowitz (hcb@gettcomm.com)
Date: Fri Jul 02 2004 - 15:08:43 GMT-3
At 2:00 PM -0400 7/2/04, Kenneth Wygand wrote:
>Guilherme,
>
>This is normal, as per RFC1812:
>
><SNIP>
> As was described in Section [4.2.3.1], a router may encounter certain
> non-standard IP broadcast addresses:
>...
> o { <Network-prefix>, 0 } is an obsolete form of a network-prefix-
> directed broadcast address.
>
> As was described in that section, packets addressed to any of these
> addresses SHOULD be silently discarded, but if they are not, they
> MUST be treated according to the same rules that apply to packets
> addressed to the non-obsolete forms of the broadcast addresses
> described above. These rules are described in the next few sections.
></SNIP>
>
>So the '0' in the node address is a legacy version of a broadcast,
>so that's how Cisco routers treat this.
>
Unless it changed since I last looked (not recently), there was a
configuration register option that would have the router recognize
0.0.0.0 as the link-local broadcast. I have no idea if that would
affect directed broadcast.
This archive was generated by hypermail 2.1.4 : Sun Aug 01 2004 - 10:11:45 GMT-3