Routing and T-1 Issue

Dedicated T-1 issue.

I have a situation I am unclear on how to work with. I have two car lots on
opposite sides of the street connected via T-1. There is no connection to
the Internet on this line, simply a connection to each other. Currently
there is a lot of equipment in place making it all work and I think it all
got there during a time when the IP configuration was different than it is
now and I can get rid of most of it. Please help.

Each side of the street has a 24 port D-Link switch connecting the workgroup
and from the D-Link on each side we go to a Cisco 1601-R then via serial
cable to an ADC Kentrox Satellite 651 (72651) then T-1 Line. I have the
same on both sides of the street.

Now on one side of the street the D-Link also goes to a Linksys BFSR11 DSL
router then to a Cisco 2600 Series Router which goes to a T-1 out on to the
web.

At one time the company bought class C addresses for the machines on one
side of the street (32 addresses, just enough) and connected via the 2600 to
the web. There was no connection from the other side. Then they put in
computers across the street and got the new T-1 line to link them. More IPs
in the same range were not available so they got some more in a new range
and linked up with the 1601 routers.

This situation put everything in the organization on class C addresses with
no firewall appliance so we put in the Linksys and changed all the IPs to
private 192.168.1.x on one side and 192.168.2.x on the other side still
using the 1601 routers and still having 2 subnets.

Now the question:

What can I take out and how can I get everything on the same subnet?

Seems like I should be able to take out the Kentrox and Cisco stuff all
together and plug the local T-1 straight into their respective D-Link
switches and the Internet T-1 straight into the Linksys.

Please help,
TIA
Chris

The D-Link switches cannot handle the T1. Even though the connector may
appear to be the same as an Ethernet cable it isn't. You will definately
need the Kentrox and Cisco stuff. The easiest way to make both sides of your
T1 be on the same subnet is for you to put the Cisco routers in "Bridge"
mode instead of "IP Route" mode. It's a fairly easy thing to do if you know
basic Cisco stuff.

It sounds like the Linksys BFSR11 DSL router is being used as the NAT
(Network Address Translation) and firewall device. Someone that has basic
Cisco knowledge can do the same thing within the 2600 and you could dump the
Linksys.

Your setup is not all the uncommon, nor all that complex.



<headch-a-t-bellsouth-o-(E-Mail Removed)> wrote in message
news:41ebdba3$0$27419$(E-Mail Removed) m...
> Dedicated T-1 issue.
>
> I have a situation I am unclear on how to work with. I have two car lots
> on
> opposite sides of the street connected via T-1. There is no connection to
> the Internet on this line, simply a connection to each other. Currently
> there is a lot of equipment in place making it all work and I think it all
> got there during a time when the IP configuration was different than it is
> now and I can get rid of most of it. Please help.
>
> Each side of the street has a 24 port D-Link switch connecting the
> workgroup
> and from the D-Link on each side we go to a Cisco 1601-R then via serial
> cable to an ADC Kentrox Satellite 651 (72651) then T-1 Line. I have the
> same on both sides of the street.
>
> Now on one side of the street the D-Link also goes to a Linksys BFSR11 DSL
> router then to a Cisco 2600 Series Router which goes to a T-1 out on to
> the
> web.
>
> At one time the company bought class C addresses for the machines on one
> side of the street (32 addresses, just enough) and connected via the 2600
> to
> the web. There was no connection from the other side. Then they put in
> computers across the street and got the new T-1 line to link them. More
> IPs
> in the same range were not available so they got some more in a new range
> and linked up with the 1601 routers.
>
> This situation put everything in the organization on class C addresses
> with
> no firewall appliance so we put in the Linksys and changed all the IPs to
> private 192.168.1.x on one side and 192.168.2.x on the other side still
> using the 1601 routers and still having 2 subnets.
>
> Now the question:
>
> What can I take out and how can I get everything on the same subnet?
>
> Seems like I should be able to take out the Kentrox and Cisco stuff all
> together and plug the local T-1 straight into their respective D-Link
> switches and the Internet T-1 straight into the Linksys.
>
> Please help,
> TIA
> Chris