how to configure two GB routers on the same network?

July 26, 2012 at 20:42:36
Specs: Windows 7
I have one cisco 2851 router and one watchguare firewal currently being used as the main router. I want to connect the cisco as a secondary router on the same network.

Thank you in advanced for your help.


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#1
July 27, 2012 at 02:34:41
Look at CurtR's profile. He has a very good Howto dealing with your subject:

http://www.computing.net/userinfo/1...

Goin' Fishin' (Some day)


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#2
July 27, 2012 at 07:29:04
Thanks for the recommend Richard59 but that guide is for use with SOHO Routers and may not apply in this situation.

I want to connect the cisco as a secondary router on the same network.

By "secondary" do you mean "redundant"? As in, if the first router suffers some catastrophic hardware failure, the secondary router takes over?

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#3
July 27, 2012 at 09:06:20
Thanks. That recommendation did not help.

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#4
July 27, 2012 at 09:17:00
You haven't told us what you are trying to accomplish. There are a number of different setups with two routers.

Answers are only as good as the information you provide.
How to properly post a question:
Sorry no tech support via PM's


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#5
July 27, 2012 at 09:32:55
What wanderer said!

I asked you a question and rather than answer it, you responded with comment that I was correct in saying a guide for SOHO routers wasn't going to help you in your situation. I didn't need your confirmation, I stated that because I knew it to be true. But hey, thanks for confirming what I already knew!

If you want help you're going to have to answer the question.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#6
July 27, 2012 at 18:42:31
Below is the setup I am using to connect two routers on the same network. The main problem that I am having is the internet access is not working with the second router. Router1 which is a watchguard XTM 210 that connects to the ISP cisco router. Router2 is the cisco2851 that connects to a cisco 3500 switch. Without the router2 everything works fine. When I include router2, the local network works fine but there is no internet access. What am I doing wrong here?

ROUTER 1 (LAN Side) WatchGuard Firewall

IP 192.168.0.1
SM 255.255.255.0
NO DHCP
NO DHCP Scope

ROUTER2 (WAN Side0) Cisco2851

IP 192.168.0.2
SM 255.255.255.0
Default Gateway 192.168.0.1

ROUTER2 (LAN Side1) Cisco2851

IP 192.168.1.1
SM 255.255.255.0
NO DHCP
NO DHCP Scope


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#7
July 30, 2012 at 14:35:11
Well, it's hard to say what's wrong considering. Normally I'd think you didn't have the proper static route between subnets but you say the LAN is working which implies the route is there and working.

If the LAN side is working for people on the 192.168.1.0/24 network, but internet isn't, I'd have to do some testing to figure out what. Perhaps the clients have the wrong gateway DNS address?

Double check, are you sure clients on the 192.168.1.0/24 network can connect to, and communicate with the 192.168.0.0/24 network? If not, then it's a routing issue (as in, you need a route between subnets)

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#8
July 30, 2012 at 15:20:35
Thank you for you answer, Curt. I did roll back from this configuration for couple of days because of a busy schedule. I am going to try it again with more troubleshooting later. In the mean times, do you have any other configuration that you might suggest?

Thanks againg for replying.

JJupiter


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#9
July 31, 2012 at 07:15:21
I can't think of any other way to join two separate subnets. In my own experience that requires a router between them and a static route (or 'routes' if you want two-way traffic between subnets) between the two router interfaces (subnets).

If your LAN on the 192.168.1.0/24 side was working, but wasn't able to communicate with the 192.168.0.0/24 or the internet, this to me says the route (or again 'routes') were incorrectly configured.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#10
July 31, 2012 at 13:04:57
why are you chaining three routers together?
1. ISP cisco router.
2. watchguard XTM 210
3. cisco2851

You don't mention if the watchguard's WAN port is in the 192.168.1.x subnet.

I suspect it is since when you hook up the 3rd router you get no internet.

Answers are only as good as the information you provide.
How to properly post a question:
Sorry no tech support via PM's


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