From owner-freebsd-hackers Thu Feb 15 14:20:44 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id OAA28354 for hackers-outgoing; Thu, 15 Feb 1996 14:20:44 -0800 (PST) Received: from rocky.sri.MT.net (rocky.sri.MT.net [204.182.243.10]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id OAA28346 for ; Thu, 15 Feb 1996 14:20:34 -0800 (PST) Received: (from nate@localhost) by rocky.sri.MT.net (8.6.12/8.6.12) id PAA01710; Thu, 15 Feb 1996 15:23:13 -0700 Date: Thu, 15 Feb 1996 15:23:13 -0700 From: Nate Williams Message-Id: <199602152223.PAA01710@rocky.sri.MT.net> To: davidg@Root.COM Cc: Nate Williams , hackers@FreeBSD.ORG Subject: Re: Broadcast, Netmask, and other such information In-Reply-To: <199602152215.OAA07636@Root.COM> References: <199602152115.OAA01407@rocky.sri.MT.net> <199602152215.OAA07636@Root.COM> Sender: owner-hackers@FreeBSD.ORG Precedence: bulk David Greenman writes: > >Maybe I'm not making myself clear. When I say 'addresses in the > >subnet', I'm trying to convey a number which *should* be a power of 2 #. > >In the above example, there are 32 addresses assigned in each subnet, of > >which there are only 31 usable as host addresses (except in the first > >and last subnets due to the .0 & .255 addresses being unusable). > > Actually, no, you would only get 30 hosts per subnet. The all-ones host > part on each subnet is the subnet's broadcast address and all-zeros host > can't be used, either. I'm assigned 32 IP addresses out of the 10.5.5.0/24, which is 10.5.5.96/27. Are you saying that I can't use the address 10.5.5.96 since it's the 'all zeroes' address? Nate