connect 2 cisco 831 routers

Unanswered Question
May 5th, 2010

Hi,

I have 2 cisco 831 routers and want to connect them together. What is the best way to do this?

I have both straight-through and cross-over cables. I do not know whether these cables are right to use

and what interfaces should I connect them: lan or wan or mixed.

Thanks.

I have this problem too.
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Federico Coto F... Wed, 05/05/2010 - 13:19

Hi,

Depending what you want to do. Is it a lab or production and what's the purpose?

To connect two routers back-to-back you should use cross-over cables (unless the devices support MDIX)

Federico.

cisco8123 Wed, 05/05/2010 - 13:25

I am preparing for the ccna exam. and want to set up a network at home to practice.

by the way, how are two routers connected in a product environment? just curious.

thanks

Jon Marshall Wed, 05/05/2010 - 13:28

cisco8123 wrote:

I am preparing for the ccna exam. and want to set up a network at home to practice.

by the way, how are two routers connected in a product environment? just curious.

thanks

In production you would use a switch in between the 2 routers and each cable would be a straight-thru from the router to the switch.

Jon

Jon Marshall Wed, 05/05/2010 - 13:38

cisco8123 wrote:

connect the wan interface of both routers to the switch?

Generally the LAN interfaces are connected to a switch. The WAN interface may be but it depends on the WAN interface in use. ATM would be ATM switch, Frame Relay would be frame relay switch, metro ethernet would be ethernet switch etc..

Jon

Federico Coto F... Wed, 05/05/2010 - 13:27

Again, depending on what you want.

Just connect them via Ethernet interfaces (LAN or WAN)

Federico.

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