> Hello all,
>
> I've got a little question. We've got several PM2E's and are now adding
> more lines. We would now like to move the dial-up IP's (assigned
> addresses) to a subnet other than the local one (read: a different
> subnet than the PM's are actually on). I'd like a little advice on the
> best way to do this...
By assigned addresses to you mean 'Dynamic IP addressing' (ie, the
portmaster sets the IP address).
If so, Then leave the portmaster ether0 on your local network, Take a
class C and cut it into 32 IP subnets (255.255.255.224) and route each
chunk to a different PM at your gateway router. Set the assigned IP
address for each PM to be the first IP in the subnet. Set the netmask for
that class C to 255.255.255.224 on each PM.
Example: Say you want to cut up 10.11.12.0 into a bunch of 32 IP subnets
(30 usable) you would do this
PM 1
set netmask 10.11.12.0 255.255.255.224
set assigned 10.11.12.1
(.1 is the first IP in this subnet, .0 is the network, .31 is the
broadcast)
PM 2
set netmask 10.11.12.0 255.255.255.224
set assigned 10.11.12.33
(.32 is network, .63 is broadcast)
PM 3
set netmask 10.11.12.0 255.255.255.224
set assigned 10.11.12.65
(.64 is network, .95 is broadcast)
We do this now using a Cisco 2501 as our main gateway router. We will be
installing a 4700-M soon with 6 ethernets. We will then move all the PM's
over to a different ethernet and use fake network numbers for the ether
ports and real for the assigned ports.
Remember. Routers don't need to be routable to the Internet. The PM is a
router and the ethernet doesn't need to be routable, unless of course you
want to get Livingston Tech support to telnet into the PM. But then you
can just have them telnet into a local machine and the into the PM.
-Matt