From owner-freebsd-questions@FreeBSD.ORG Thu Sep 15 15:12:47 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E892416A41F for ; Thu, 15 Sep 2005 15:12:46 +0000 (GMT) (envelope-from e.schuele@computer.org) Received: from rwcrmhc12.comcast.net (rwcrmhc14.comcast.net [204.127.198.54]) by mx1.FreeBSD.org (Postfix) with ESMTP id 867A743D49 for ; Thu, 15 Sep 2005 15:12:46 +0000 (GMT) (envelope-from e.schuele@computer.org) Received: from [208.206.151.59] (host59.gtisd.com[208.206.151.59]) by comcast.net (rwcrmhc14) with ESMTP id <20050915151245014009kqiqe>; Thu, 15 Sep 2005 15:12:45 +0000 Message-ID: <43298F5E.5060102@computer.org> Date: Thu, 15 Sep 2005 10:12:30 -0500 From: Eric Schuele User-Agent: Mozilla Thunderbird 1.0.6 (X11/20050908) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Eric Schuele References: <014f01c5b945$65df9280$6501a8c0@GRANT> <43298E1D.8090006@computer.org> In-Reply-To: <43298E1D.8090006@computer.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Grant Peel , freebsd-questions@freebsd.org Subject: Re: IPs , Netmasks and Broadcast. X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Sep 2005 15:12:47 -0000 Eric Schuele wrote: > Grant Peel wrote: > >> Hi All, >> >> Now I am really confused. >> >> Up until this morning I thought I had a good handle on when I need to >> use the real Netmask and Broadcast. >> >> For example, If I have 3 servers, and my upline asigns me a block of >> 128 addresses, for the first ip used (from this block) on each server, >> I would need to specify the IP, true netmask and a broadcase. Then, >> when using more IPs from that block, I would use a 255.255.255.255 >> netmask and a broadcast equal to the IP. > > > Google > CIDR > IP Netmask > IP broadcast > > HTH. > Hmmm... I may have had a tad too much coffee this morning. I think I read over your OP too quick and probably have not answered the question properly. Its all good reading... but probably not applicable to your problem. >> >> Today, I was in this exact position where I was tring to add an (the >> first one one THAT machine, from that block) IP from a block that is >> almost completely used up on another server, and the one I was adding >> it to would not take it. When I tried adding it with a 255.255.255.255 >> netmask, and a broadcast eaqual to the amount of IPs from that block - >> it worked. >> >> this is on a FreeBSD 4.10 machine. >> >> WHich way is correct for 4.7 and higher? >> >> -Grant >> >> >> _______________________________________________ >> freebsd-questions@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-questions >> To unsubscribe, send any mail to >> "freebsd-questions-unsubscribe@freebsd.org" >> > > -- Regards, Eric