[TriLUG] rfc ISP setup

[Jim Ray]

I'm trying to help an ISP get set up and kindly request comments on the
procedure.  We have a T1 with a class C block of static IPs and want to
divide up the static IPs in blocks of 32 and control who gets what.

Since we need 5 blocks, I thought about getting 5 routers and constructing
the following 5 networks (private IPs substituted for the real IPs, reserved
range up to 10.10.115.31):

router 1	
IP allotment	10.10.115.32/27
network	10.10.115.32
gateway	10.10.115.33
server IP	10.10.115.34
open (usable)	10.10.115.35-62
broadcast (not usable)	10.10.115.63
netmask	255.255.255.224

router 2	
IP allotment	10.10.115.64/27
network	10.10.115.64
gateway	10.10.115.65
server IP	10.10.115.66
open (usable)	10.10.115.67-94
broadcast (not usable)	10.10.115.95
netmask	255.255.255.224

router 3	
IP allotment	10.10.115.96/27
network	10.10.115.96
gateway	10.10.115.97
server IP	10.10.115.98
open (usable)	10.10.115.99-126
broadcast (not usable)	10.10.115.127
netmask	255.255.255.224

router 4	
IP allotment	10.10.115.128/27
network	10.10.115.128
gateway	10.10.115.129
server IP	10.10.115.130
open (usable)	10.10.115.131-158
broadcast (not usable)	10.10.115.159
netmask	255.255.255.224

router 5	
IP allotment	10.10.115.160/27
network	10.10.115.160
gateway	10.10.115.161
server IP	10.10.115.162
open (usable)	10.10.115.163-190
broadcast (not usable)	10.10.115.191
netmask	255.255.255.224

However, the Adtran folks tell me the NetVanta 3205 CSU/DSU coming off the
T1 has the ability to create zones that will circumvent the use of separate
routers when used in conjunction with the managed switch and VLANs.

What is the best way to achieve the desired results?

Regards,

Jim

Jim Ray, President
Neuse River Networks
tel: 919-838-1672 cell: 919-606-1772
http://www.Neuse.Net
 
Connecting You to the World since 1997