From owner-freebsd-questions Thu May 10 10:35:37 2001 Delivered-To: freebsd-questions@freebsd.org Received: from marlo.eagle.ca (marlo.eagle.ca [209.167.16.10]) by hub.freebsd.org (Postfix) with ESMTP id E3EE237B422 for ; Thu, 10 May 2001 10:35:33 -0700 (PDT) (envelope-from freymann@eagle.ca) Received: from phantom (staff.eagle.ca [209.167.16.15]) by marlo.eagle.ca (8.11.0/8.11.0) with SMTP id f4AHWSJ73529; Thu, 10 May 2001 13:32:29 -0400 (EDT) (envelope-from freymann@eagle.ca) Message-ID: <005b01c0d977$9e4b1430$0f01a8c0@phantom> Reply-To: "Gerald T. Freymann" From: "Gerald T. Freymann" To: "Wayne Pascoe" Cc: References: <86r8xxnncd.fsf@pan.penguinpowered.org.uk> Subject: Re: TCP/IP Subnetting Date: Thu, 10 May 2001 13:35:34 -0400 Organization: eagle.ca MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > I have a /25 IP range that I need to subnet. I need to give 4 > addresses to one network and the remaining addresses to the other > network. But you also must remain in the proper boundaries of subnetting. You may find you can't split it exactly as you want, but at least something close. If you have a look here: http://www.again.net/cidr You want a 4 useable IP subnet... but it shows 2, 6 and 14. Network A: Network Address: 192.168.1.128 Broadcast Address: 192.168.1.135 Subnet Mask: 255.255.255.255.248 Range: 192.168.1.129 - 192.168.1.134 (6 useable Addresses) Network B: Network Address: 192.168.1.136 Broadcast Address: 192.168.1.255 Subnet Mask: 255.255.255.136 Range: 192.168.1.137 - 192.168.1.254 (118 useable Addresses) But how much you wanna bet a subnet of 255.255.255.136 is invalid? I dunno. When subnetting there have areas where I thought hey, I can just split it here, and there, using variable length subnet masks, but when I go to the router to enter it, it whines. My guess is you'll likely have to stick with the CIDR prefix lengths. Possibly splitting your half a Class C into 3 or 4 pieces. Just a wild, wild guess. -gf To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message