T1 Bridging

Hi,

I work as a part of a radio technician team for a fairly large government organization. We have 5 "sites", each containing a radio tower with antenna's and the backbone work to operate each one, including microwaves and the like. 1 of course being our control point, with several computers on a LAN.

Our goal at the moment is to be able to connect from any given site, to the control center to utilize the LAN. We have 2 routers and a switch at each site available for use in this projects. The routers are Adtran Netvanta 3200/3205 and switch a Netgear. However, we're stumbling on the best method to use and/or how to get it configured.

While at first glance this was thought to be a easy enough project, and the hardware recognized each other right away. They don't seem to see each other over the WAN. I think something like a bridge with IP routing would be ideal, but I'm afraid I don't know enough to get this running it seems.

For the sake of consistency... We only have computers at the control center, and carry laptops at all times. When we access the control point, we want to do so by going to any of these remote sites and plugging into the switch, which is in turn plugged into the router.

Any help would be appreciated.

Your remote sites all connect back to the central location with PTP T1's?

I've actually run across a tool that will aide in the configuration of our routers, and may solve most of our problems.

However, at this point I'm feeling rather dumb.

With the above information in mind, I know that:

Control Center: 194.168.4.94
Remote Test Site: 194.168.4.95

By knowing this, and wanting to connect from the remote site to the control center, am I wrong in assuming that?

Router
Default Route (analogous to Default Gateway): 194.168.4.95

(Next 3 optional in tool)
Destination Network: 194.168.4.94
Subnet Mask: 255.255.255.0
Gateway: ???

LAN
Ethernet IP Address: ???
Subnet Mask: 255.255.255.0

WAN Protocol
PPP, Frame Relay, or HDLC: PPP

IP Address: 194.168.4.94
Subnet Mask: 255.255.255.0


I hate to have to ask for things spelled out for me, but typically we don't deal with a lot of networking. ANy help is appreciated.

Sporky -

At present time, there is no WAN setup at all. However, our goal is to be able to connect back to our control center via T1, which are already installed and in use.

The gateway would be the IP of the inside interface of the 4.95 router
The ethernet address would be a adress in the inside interface range. Is the 4.95 router a DHCP server?

From the little I know about DHCP servers, no. 4.95 is not a DHCP server.



Please pardon my ignorance, but I'm not entirely sure I understand what the IP of an inside interface is.

My best guess would be:

(For IP routing)
Destination Network: 192.168.4.94
Subnet Mask: 255.255.255.0
Gateway: 192.168.4.0 (?)

Gateway meaning the span between 192.168.4.0 and 192.168.4.255?

I appreciate the help thus far and understand that I am most likely, in over my head. However, network installation is rare here so we don't have a person(s) to handle it without paying well. I'm just trying to do what I can, and learn what I can in the process.

UN/PW changed for obvious reasons.

Does this sound like it might work for what I'm trying to accomplish? I would imagine the eth interface should actually be 192.168.4.95 and not 4.94, but I'm a novice here.

-or-



I hate to flood this post, but just trying to get all possible information in, to aide in getting a more precise conclusion.

Thank you,
-RMD

[QUOTE=RMD]From the little I know about DHCP servers, no. 4.95 is not a DHCP server.



Please pardon my ignorance, but I'm not entirely sure I understand what the IP of an inside interface is.

My best guess would be:

(For IP routing)
Destination Network: 192.168.4.94
Subnet Mask: 255.255.255.0
Gateway: 192.168.4.0 (?)

Gateway meaning the span between 192.168.4.0 and 192.168.4.255?

Gateway is the address given to a packet not destined for the computers internal network. ie.. your computer adresses all IP packets not on its internal network to the gateway.

This woiuld be the IP assigned to the port of the router that is physicaly conneted to the remote sights network switches or hub.

I dont know Netvanta but it looks like these should work for you.
you would have to enable IP routing. and set up internal subnets at your remote sites.

Why guess when Adtran provides the script?

https://www.adtran.com/adtranpx/Doc/0/5K9T5DP6BCCK3CCH4RIQ9TEACF/CU-81590d70185f4585bdf3999bf5cf593.html

https://www.adtran.com/adtranpx/Rooms/DisplayPages/LayoutInitial_webrQS%20_Q29udGFpbmVyPWNvbS53ZWJyaWRnZS5lbnRpdHkuRW50aXR5JTVCT0lEJTVCNkEwQjA2RTdDM0U5 OEU0MDlFOEI3NjZDQUQ5MkEzRTclNUQlNUQ.

If those scripts worked for what I'm trying to do, or showed any sign of releif at all, I'd jump on top of them fast.

Adtran seems to have a tendancy to think to large, which is why it's hard to talk to them on the phone.

I'd be happy if I could just get one site setup to speak to the control center. It shouldn't be this difficult.

[Site 1]------- T1 ---------[Site 2]

Both sites have T1 dropped in them and in use, and I have a router at both ends.

Come on RMD did you even look at the link?

Your script appears incorrect. You have T1 which doesn't appear to be a valid entry [ppp/FR]. Your cross connect appears wrong since serial is listed not T1. Interface is serial not T1, there is no encoding b8zs, etc...

The complete configuration for the point-point PPP bridging application is shown below in the format of a script:


no ip routing
!
interface eth 0/1
full-duplex
speed auto
ip address 192.168.4.1 255.255.255.0
bridge-group 1
bridge-group 1 spanning-disabled
no shutdown
!
interface ser 1/1
no shutdown
!
interface ppp 1
ip address 192.168.4.1 255.255.255.0
no shutdown
cross-connect 1 serial 1/1 ppp 1
!
bridge-group 1
bridge-group 1 spanning-disabled
!
exit
bridge 1 protocol ieee
end

My suggestion would be to copy this script to each router and only modify the ip address assuming you are using ppp at both ends. Otherwise the FR script is right belowthis one on the top link I sent you. I don't see a answer to the question of what type of wan you have. Contact your wan provider for that detail. If doing frame you will not, to my knowledge, be able to bridge. You will have to route which means you will have to set a ip scope for the wan interfaces. Usually with Frame you only have one router at your main facility so you will have to create subinterfaces on the router for each connection. You will also have to know your dlci numbers for your circuits. Again you will get these from the wan provider.