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Connecting 2 satelite offices to the main

I have two satelite offices and a 1 main office. At the main office I have 1 router and 2 routers for each of the satelite offices. Each satelite office has one router. So I am working with a total of 5 routers. There is a point to point T1 setup between each of the satelite offices. The T1 is connected to the router via serial link on each of the routers. What I am looking for is the router config and ip routes for each of the routers.
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vmamedov
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vmamedov
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1 Solution
 
knightrider2k2Commented:
can you clarify yourself a bit more.
What are you trying to accomplish?
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vmamedovAuthor Commented:
I am trying to have both satellite offices talk to the main office and each other and get internet from the main office.
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knightrider2k2Commented:
This can be accomplished with only 3 routers.
You said the two satellite offices are already connected by T1 line.
Now you need atleast one available serial interface on each of the satellite offices. and two available serial interface on the main office router.

I would not use 5 routers for this unless you have a reason for it. Let me know if this makes sense and then I can post the comfiguration for the routers.

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vmamedovAuthor Commented:
Hi knight, thanks for taking a look at my problem

I need to use two routers because I couldnt get the 2nd serial interface on one of the routers to work. So thats why I have split up each location to have its own router. Lets call each location, "branch1" and "branch2", and the main office "mainoffice" What I have currently is "branch1" router onsite at branch1. "branch2" router onsite at branch2. in the main office i have "branch1" router(connected to the onsite branch1 router via point to point T1) and "branch2" router(again connected to onsite branch2 router via point to point T1) The T1 is connected to each router via serial link either serial0 or serial1 and each site has a CSU/DCU unit. the ip addresses are as follows
main office=ethernet 140.241.232.2
branch1 @ main office =ethernet 140.241.232.3 serial 140.241.139.2
branch1 @ onsite = ethernet 140.241.237.1 serial 140.241.239.1
branch2 @ main office = ethernet 140.241.232.4 serial 10.241.99.66
branch2 @ onsite = ethernet 10.241.30.1 serial 10.241.99.65

the 4 branch routes are all cisco, but the main office is an "SSR"
I need to know what each router should have for config and especially routers

Thanks agian for your help
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knightrider2k2Commented:
Please confirm if this is a typo
branch1 @ main office =serial 140.241.139.2
branch1 @ onsite = serial 140.241.239.1

And also, what IP scheme are you using for clients(LAN) on the main and branch offices.
And on the Main office router, do you have 2 available ethernet interfaces. You have to connect the branch routers to the main router to be able to connect to the internet.


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vmamedovAuthor Commented:
Hi knight

What you had mentioned is NOT a typo. Thats is how the interfaces were setup.
What do you mean by ip scheme?
Yes there are 2 available interfaces on the main router. Its an SSR with 24 interfaces.
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knightrider2k2Commented:
I was saying it is a typo because the ip addresses of these point-2-point end points are on two different subnets. 139 and 239.
Usually they are on one subnet like
branch2 @ main office =serial 10.241.99.66
branch2 @ onsite = serial 10.241.99.65

IP scheme on the LANs.
I meant what IP addresses will you use on the workstations. for example
192.168.0.0  255.255.255.0
192.168.1.0 255.255.255.0  etc

Also ethernet IP addresses on the branch routers does not make sense.  Was this a working network? Or are you designing it from scratch??
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vmamedovAuthor Commented:
Knight, i know it looks like a type but its not. 1 serial interface is .139 and the other is .239

branch1 is 10.241.30.x
branch2 is 140.241.237.x
main ofice is 10.241.26.x and 27.x

branch1 is new and branch2 is currently working
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knightrider2k2Commented:
140.241.x.x is a public ip address.
On point-2-point circuits, you can use any private ip addresses. Please change the 139 to 239 or vice-versa otherwise it will create a lot of problems. You can use any private ip address
From 10.0.0.0 to 10.255.255.255
From 172.16.0.0 to 172.31.255.255
From 192.168.0.0 to 192.168.255.255
Branch 2 ip addresses are OK.

But if you want to stick with the ip addresses above, then here is a basic configuration

Branch1router onsite:
IP classless
ip route 140.241.139.0 255.255.255.0 140.241.239.1
ip route 0.0.0.0 0.0.0.0 140.241.139.2

Brach1MainOffice:
IP classless
IP route 140.241.239.0 255.255.255.0 140.241.139.2
ip route 140.241.237.0 255.255.255.0 140.241.239.1
ip route 10.241.30.0 255.255.255.0 140.241.232.4
ip route 0.0.0.0 0.0.0.0 <140.241.232.2 or the gateway for internet>

Branch2onsite
IP classless
IP route 140.241.232.0 255.255.255.0 10.241.99.6
IP route 0.0.0.0 0.0.0.0 <140.241.232.2 or the gateway for internet>

Branch2Mainoffice
IP classless
IP route 10.241.30.0 255.255.255.0 10.241.99.5
ip route 140.241.139.0 255.255.255.0 140.241.232.3
IP route 140.241.239.0 255.255.255.0 140.241.232.3
IP route 140.241.237.0 255.255.255.0 140.241.232.3
IP route 0.0.0.0 0.0.0.0 <140.241.232.2 or the gateway for internet>





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vmamedovAuthor Commented:
thanks for all your help knight
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