With a /30 you use 4 IP addresses (network, 2 node, 1 broadcast). You save addresses with a /31. Here's a link with more info:
http://www.ietf.org/rfc/rfc3021.txt?number=3021 Thanks, Craig At 08:32 AM 11/30/2001 -0500, you wrote: >Maybe I'm missing something, but there are only 2 useable addresses in a >/30, and only 2 interfaces participating in a point-to-point link, so how >are there 50% of the addresses wasted. > >Steve > > >""MADMAN"" wrote in message >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Point to point connections, with a /30 you waste 50% of the > > avaivalable addresses. > > > > Dave > > > > Nicolas FEVRIER wrote: > > > > > > Hi group, > > > > > > I'm puzzled by the use of /31 subnets... > > > Anybody can explain me the benefits of such a subnet on an interface ? > > > > > > Thanxx. > > > > > > Nicolas. > > -- > > David Madland > > Sr. Network Engineer > > CCIE# 2016 > > Qwest Communications Int. Inc. > > [EMAIL PROTECTED] > > 612-664-3367 > > > > "Emotion should reflect reason not guide it" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=27802&t=27802 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
