--- On Tue, 25 Jun 96 16:01:41 +0100 Mike Norris <mnorris@dalkey.hea.ie> wrote:

1- using a /30 subnet for each link: in this way both ends of the link have a unique address (binary 01 and 10), but two addresses (binary 00 and 11) cannot be used, so 50% of the address space used is wasted. This should be avoided if possible because the address space required is really large.

The usage is actually 75%, as there are effectively three addresses: the two ends (00 and 01) and the broadcast address for the network (11). 10 is the unused address. Mike -----------------End of Original Message----------------- Actually, if you are using Cisco solely, you can always define "ip subnet-zero", and use broadcast AND network addresses. No loss :-) Cheers, Sincerely, \'"'/ Barak Engel ( o o ) ---------------------ooOO-^-oOOo---------- Engel Barak, NetVision WAN team BE-RIPE E-mail: barak@netvision.net.il Date: 6/26/96 Time: 8:49:40 AM Phone: +972 4 8550330 Fax: +972 4 8550345 ------------------------------------------