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How to connect two LANs with Cisco 2811 FE0/0 and 0/1?

Hello,

I have Cisco 2811 router and I have configured two different LANs.

Now I would like to connect them via FastEthernet0/0 and FastEthernet0/1.

LAN1(192.168.1.0) and LAN2 (10.1.0.0)

LAN1 is in FE0/0 and interface address is 192.168.1.1

LAN2 is in FE0/1 and interface address is 10.1.0.1

So, I would like to connect these two networks. What kind of routes I should do? How to connect FE0/0 and FE0/1 that ping will go between these ports?

I can't set router interface IP-address as my workstation default gateway address because I have another gateway address I am allready using.

My point is, how to configure router that it allows ping to go from FE0/0 to FE0/1 and from FE0/1 to FE0/0.

Now for example, ping from LAN1 worstation goes OK to interface 192.168.1.1 but does not respond if I try to ping 10.1.0.1

I don't want to change my workstation gateways so what I should do next? Thanks for help and sorry my bad English.

2 REPLIES

Re: How to connect two LANs with Cisco 2811 FE0/0 and 0/1?

Hi Terno

You do not need to configure anything on the router to pass the packets on from FE 0/0 to FE 0/1.. Its more to do with your desktop configuration... As you said ---- "I can't set router interface IP-address as my workstation default gateway address because I have another gateway address I am allready using" ...

you are not able to ping, because you havent set the routers interface as the default gateway on the PCs.. if you are not able to set default route, you can add static routes on your desktop for each networks..

LAN1 is in FE0/0 and interface address is 192.168.1.1

LAN2 is in FE0/1 and interface address is 10.1.0.1

On a PC in LAN1 - route add 10.1.0.0 mask 255.255.255.0 192.168.1.1

where 192.168.1.1 is the routers interface IP

and on a PC in LAN 2 - route add 192.168.1.0 mask 255.255.255.0 10.1.0.1

this will make sure your packets are routed back to the gateway, which takes care of layer 3 forwarding..

Try this and let us know

Hope this helps.. all the best

Raj

Hall of Fame Super Blue

Re: How to connect two LANs with Cisco 2811 FE0/0 and 0/1?

VeteranMidfielder wrote:

Hello,

I have Cisco 2811 router and I have configured two different LANs.

Now I would like to connect them via FastEthernet0/0 and FastEthernet0/1.

LAN1(192.168.1.0) and LAN2 (10.1.0.0)

LAN1 is in FE0/0 and interface address is 192.168.1.1

LAN2 is in FE0/1 and interface address is 10.1.0.1

So, I would like to connect these two networks. What kind of routes I should do? How to connect FE0/0 and FE0/1 that ping will go between these ports?

I can't set router interface IP-address as my workstation default gateway address because I have another gateway address I am allready using.

My point is, how to configure router that it allows ping to go from FE0/0 to FE0/1 and from FE0/1 to FE0/0.

Now for example, ping from LAN1 worstation goes OK to interface 192.168.1.1 but does not respond if I try to ping 10.1.0.1

I don't want to change my workstation gateways so what I should do next? Thanks for help and sorry my bad English.

What is the device that is acting as the gateway for the workstation at the moment. Can you add routes to that device. Can you run a routing protocol between that device and the 2811 router ?

Jon

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