Routing between two subnets HELP!

May 05, 2006 4 Replies
C

Hi, Just like to ask what is probably a simple question to answer yet I am stumped since I was told that I am wearing the hat of network assistant for the next two weeks...



I have two subnets, one is at 10.15.133.0 and the other is at



128.145.99.0

I have been asked to connected both subnets together in order to assist with a data transfer from several workstations



On each subnet lies a cisco router. On the 10.X is a cisco 2610 at



10.15.133.1 and on the 128.X subnet is a Cisco 2501 at 128.145.99.1

So the question is how do I the subnets to communicate back and forth?



Thanks, Chris



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C

And how is the 2610 connected to the 2501?

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B

Ethernet 0 on the 2501 and Ethernet 0/0 on the 2610 via unmanaged

10/100 switch. Thanks!
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W

On *one* of the two routers, add a subinterface with an IP address in the other IP space. (I suggest doing that on the 2610 as the

2501 usually has older IOS.) If you are running routing protocols (e.g., RIP) configure those appropriately; otherwise on the -other- router, configure a static route to the other network via the IP address that you configured on the first router. Then connect the two routers together and let the packets fly.

There is a temptation to add this kind of routing on to both routers, but if you do that then unless you are quite careful you can run into problems with all VLAN traffic starting to be broadcast to all member ports instead of being switched.

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