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Multiple Gateways?

By LabRaT ·
A client has 3 offices. They are connected by the following gateways:

Main
Gateway: ip=10.1.1.85 255.255.255.0
Internet Gateway: 10.1.1.95 255.255.255.0

Branch1
Gateway: ip=10.1.2.85 255.255.255.0

Branch2
Gateway: ip=10.1.3.85 255.255.255.0

I have installed a security camera in the Branch3 office. The camera is ip=10.1.3.20 255.255.255.0. We need to see it in the main office. If I point the clients to the Main Gateway, things are fine. I can then have a client browser look at ip address 10.1.3.20 but then it cannot access the internet!

The problem is that the Main office clients use Internet Gateway to access the internet. They do not need to communicate with the branches--only my servers do. The clients in the Main office are pointed to the Internet Gateway and my servers are pointed to the other gateway. I need the clients to access info thru both gateways. Can a Windows XP Pro client be set up to look at one gateway for internet and another gateway to see the security cameras? Or can the router tables be setup somehow to allow this?

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by CG IT In reply to Multiple Gateways?

You can setup another internet connection in network connections to use a different gateway and not cause the XP pro machine to default to that gateway. However it requires you to make the connection manually, then use the program. In the control panel, network connections, create a new connection. Use the connection wizard to specify the connection type and method. Once created, you start this connection first before you start the program, one this connection is started you run your program and use this connection. you can also specify more than one gateway in the advanced settings of TCP]IP network settings.

As far as a configuring a router with multiple gateways, depends on the router your using. Cisco routers can be configured to route traffic to multiple gateways other than 0.0.0.0

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by LabRaT In reply to

I tried the advanced setting with the client. It was slow and it seemed to get lost--it would only work sometimes. But it was an answer to my question. Thank you.

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by ManISKid In reply to Multiple Gateways?

Can a DHCP relay agent be installed on your main office internet gateway to forward addresses. Whenever an address that does not exist in the local subnet is sent;
a broadcast is sent;
the relay agent finds it and sends the address on;
This is a method of making disparate networks seamless.

Also, you may be able to set up a static routing table entry. Such as setting up a disused local ip address to be transferred to the ip address of the camera. This can be done on a router or a server acting as a router.

"route add destination mask netmask gateway metric costmetric if interface"
ie "route add 10.1.3.20 255.255.255.0 10.1.3.85", however I think this is limited to servers acting as routers. (add -p for a persistent connection)

Also, I know that a lot of cameras are available over the internet but a lot of people forget to lock them down, so you may want to check this option out, with the right security of course.

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by LabRaT In reply to

The static routing table entry was what I needed. Didn't know how but I googled it. Using your example and what I got from research, a simple line in the router table directs the requests to the correct gateway. Thanks.

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by razz2 In reply to Multiple Gateways?

"Or can the router tables be setup..."

If you had a router inline before those other 2 gateways it could be the only gateway. It could then have tables to route to the Main or internet paths as needed. As long as the 2 needed gateways are seperate paths though you could use the route command mentioned in another post. See the following link for details:

http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/route.mspx

Good Luck,

razz

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by LabRaT In reply to

Your link helped explain how to set the routing table entry. Thank you.

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by LabRaT In reply to Multiple Gateways?

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