Re: default broadcast address


William Westfield (BILLW@MATHOM.CISCO.COM)
Fri 8 Jul 88 14:16:56-PDT


I recomend AGAINST using the subnet in the broadcast address.
This makes it impossible for systems to send a broadcast until
after they know the proper netmask. If the system is a diskless
machine trying to boot off the net, it would normally do this by
sending a broadcast ICMP MASK REQUEST or BOOTP. But it can't do
this until AFTER it knows the broadcast address...

Using the local broadcast address (-1, or 0) seems the best solution,
though it seems to annoy older unix systems.

Bill Westfield
cisco Systems.
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