hi I'm Bryan...

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lil_killa0309

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Nov 19, 2013
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hi I'm Bryan... rookie in netwoking... how can i solve our networking problems here in our 2 offices... We have different DSL internet connections but the same default gateway 192.168.1.1............ i had connected office1 switch with crosscable with office2 switch.... Office 1 is 10mbps while office2 is 5 mbps.... the problem is sometimes the office2 5 mbps is the connection in our office1.... vise versa.... how can i solve it??? many thanks.....

note: i had called the internet provider that they can't change they're default gateway... fix in short
 
Solution
eibgrad
It's not enough to simply change the IP address of one of the routers. Each router MUST use different local networks (e.g., 192.168.1.x and 10.1.1.x). Then you need to use a third router so you can route between those two networks. You can't just patch them together via a LAN cable because that will effectively place two (2) DHCP servers on the same physical network. That's why some of your clients are connecting to the wrong router! You prevent that by instead ROUTING between the two networks.

Properly configuring that third router takes a little work, but I don’t want to go into the details quite yet until the OP decides this is something he truly wishes to pursue.
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RaDiKaL_

RaDiKaL_

Splendid
Apr 17, 2006
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So... you have 2 DSL connections, for what you describe I assume each with it's own router, and both routers have the 192.168.1.1 IP?

If you want only office 1 to use ISP1 and office 2 to only use ISP2 while maintaining LAN connectivity between both offices, then you have to get into the web panel of one of the routers (say ISP2's router) and change it IP from 192.168.1.1 to another like 192.168.1.254.

After that you have to change ISP2's clients gateway to 192.168.1.254 (if DHCP is being used beware that since both offices are connected for that crosscable between office1 and 2 DHCP from each router could affect both offices at the same time).

If you want to manage your LAN in a different way (like both offices separated) state it here to see the best solution.
 
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eibgrad

eibgrad

Splendid
Feb 16, 2010
3,373
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It's not enough to simply change the IP address of one of the routers. Each router MUST use different local networks (e.g., 192.168.1.x and 10.1.1.x). Then you need to use a third router so you can route between those two networks. You can't just patch them together via a LAN cable because that will effectively place two (2) DHCP servers on the same physical network. That's why some of your clients are connecting to the wrong router! You prevent that by instead ROUTING between the two networks.

Properly configuring that third router takes a little work, but I don’t want to go into the details quite yet until the OP decides this is something he truly wishes to pursue.
 
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