VAX 11/725

From: Antonio Carlini <>
Date: Tue Dec 7 14:03:54 2004

> *The only thing that I never understood is what the hell did
> Cisco mean
> by multicast or broadcast on a point-to-point link. I guess
> it dates from
> the days before people realised that a point-to-point link is
> not a network

Well there certainly were non-point-to-point synch implementations
around: DEC DDCMP supports multi-drop links.

> (no ARP, etc.) and does not need to burn up a net/subnet
> number, and people
> would map a net number (hopefully a /30 subnet) to each
> point-to-point link.

There's an RFC around somewhere that allows for /31 subnets
for such purposes (.1 and .0 being allowed as the two ends).
No idea if it ever caught on though.


Antonio Carlini
Received on Tue Dec 07 2004 - 14:03:54 GMT

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:36:38 BST