[c-nsp] IP Address Assignments -Newb ?

[James Bruce]

Thanks to everyone who replied. The problems is resolved. 


-----Original Message-----
From: Eric Kagan [mailto:ekagan at axsne.com] 
Sent: Monday, August 15, 2005 4:18 PM
To: James Bruce; cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] IP Address Assignments -Newb ?

> OK I feel embarrassed for asking this but it's been a really 
> long day and even longer time since I have messed with IP 
> address subnetting. (I know this is highschoolish question) 
> So, sorry if this question is off topic and a newb question. 
> I've been searching google and reading up for a while and my 
> brain feels like mush. 
> 
> We have one router (2801) with a T1. The router will connect 
> multiple wireless access points (4) in the community. Our 
> service provider just gave us an ip address range of 
> 65.x.49.1 - 65.x.49.128 /25 I'm having trouble trying to 
> figure out what addresses/range/subnet to assign our 
> customers. We are expecting a customer base of around 1000. I 
> don't want to give our customers private address (multiple 
> customers might want multiple servers) I have a feeling I'm 
> going to smack myself later for this. I remember the formula 
> 2^-2 = subnets then remainder bits 2^ - 2= host per subnet. 
> But for the life of me I can't remember how to figure out the 
> first address range. I need to step away from it and come 
> back later but I don't have time. Any help would be appreciated.

A /25 is only 128 IP's total.  Grab Boson IP Subnet calc or any of the
other
freeware ones and you can play and cut it up all you want all day long

Eric