Date: Fri, 11 May 2001 23:46:21 +0100 From: Mark Drayton <mark.drayton@4thwave.co.uk> To: freebsd-questions@freebsd.org Subject: Re: OT: TCP/IP Subnetting Message-ID: <20010511234621.A16017@tethys.valhalla.net> In-Reply-To: <86g0ebmzu4.fsf@pan.penguinpowered.org.uk>; from wayne.pascoe@realtime.co.uk on Fri, May 11, 2001 at 08:48:35PM %2B0100 References: <200105111731.f4BHVRc07397@ptavv.es.net> <86g0ebmzu4.fsf@pan.penguinpowered.org.uk>
next in thread | previous in thread | raw e-mail | index | archive | help
Wayne Pascoe (wayne.pascoe@realtime.co.uk) wrote: > "Kevin Oberman" <oberman@es.net> writes: > > > Break up the /25 as follows: > > Size Addresses Start Address Net Mask > > /26 62 addresses 128.1.1.128 255.255.255.192 > > /27 30 addresses 128.1.1.192 255.255.255.224 > > /28 14 addresses 128.1.1.224 255.255.255.240 > > /29 6 addresses 128.1.1.240 255.255.255.248 > > Ok, what I finally settled on was 4 /27's... It means that I have to > give a bunch of extra addresses to the network that only needs 4, but > it seemed like a good idea at the time. > > Now that I'm looking at your example, I'm thinking yours may be > better. Is there any advantage to it other than more bigger ranges and > not losing extra addresses to the other network ? I don't see any disadvantages to it really, unless you need to split the 120-odd addresses into equal sized chunks rather than 3 different sized chunks. Either way you're going to have at least 3 subnets. > I was planning on putting a cisco 2621 in between each of the 3 /27's > to handle routing between them. Traffic between them should be > minimal, and machines that need to talk to each other a lot will be on > the same segment. Does this make sense ? This router would then handle > the outgoing route from all these machines. Instead of the 2621 you could use another machine and bind several virtual interfaces (one for each /27) to one of it's nics, thereby saving the 2621 for a situation where you need real interfaces. Cheers, -- Mark Drayton To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20010511234621.A16017>