How to configure 2 routers talk in 2 way

May 5, 2011 at 01:09:32
Specs: Windows 7
Hi,

Currently i have 2 routers in my office.
Wan port of Router A is connecting to ISP and Wan port of router B is connecting to LAN port of Router A.

Router A
LAN IP: 192.168.2.1/ 255.255.255.0 (Network A)

Router B
LAN IP: 192.168.0.1/ 255.255.255.0 (Network B)

Now the pc attached to Router B can ping any pc attached to Router A but pc attached to Router A cannot ping to pc attached to Router B.

May i know how to configure or what device i need so that pc in network A can communicate/ping to network B?

Best regards,
yakh0o



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#1
May 5, 2011 at 04:39:01
1) Replace router B with a switch. (easiest)

2) remove the security locks in router B. The WAN port settings are protecting the network LAN devices. Some routers do not allow or limit this.

3) change mask settings to try opening octet. May not work due to WAN port setttings.
Router A
LAN IP: 192.168.2.1/ 255.255.0.0 (Network A)

Router B
LAN IP: 192.168.0.1/ 255.255.0.0 (Network B)


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#2
May 5, 2011 at 07:56:26
The most common answer to this question:

Connect router b via router a lan port to router b lan port. disable dhcp on router b and give it a static ip in the router a subnet like 192.168.2.2

You may need to use a crossover cable between the two if neither supports mdi/mdix

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#3
May 5, 2011 at 08:12:33
Hi modify.hardware,
Thanks for your reply.

For the solution #1, if i replaced router B to a switch, that mean i can't have 2 different network (192.168.2.0 and 192.168.0.0) in my office right?

Hi Wanderer,
I saw the solution your provided in internet too, but it seems like treating router B as a switch and network 192.168.0.0 will disappear.

I need to create 2 networks in my office.


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#4
May 5, 2011 at 09:50:06
then neither solution will work for you.

why do you need two networks and if separate why would you need them to communicate?

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#5
May 5, 2011 at 20:52:21
Hi Wanderer,

I need 2 network is because i need network A (192.168.2.0) to expose to internet user, i have setup a reverse proxy to some of pc in network A.

Then network B (192.168.0.0) is for internal stuff, which i dun want it to be accessible from internet.

I have a web accelerator in Network A, but i can't redirect it to the server located in Network B due to Network A can't communicate with network B.

May i know how enterprise implement their networks so that network A can communicate with network B and vice-versa? Using a 2 wan port router?


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#6
May 6, 2011 at 07:06:41
In your case we would put in a managed switch instead of router B and use vlans to secure the connections.

Some routers have two settings; internet access and gateway mode. Gateway mode is like a real router in that its used to go between two subnets on wan/lan interfaces vs just internet access. You may want to see if your router can be put in gateway mode.

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#7
May 6, 2011 at 07:18:45
You may want to see if your router can be put in gateway mode

If it can't, you would have to establish a static route between the subnets on the router that connects the two (router B in your case).

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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