Connect two subnets without router

Posted by Shcheklein on Server Fault See other posts from Server Fault or by Shcheklein
Published on 2011-02-11T02:10:53Z Indexed on 2011/02/11 7:27 UTC
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linux

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routing

I got two Comcast routers with two different subnets on each. Every subnet contains 5 static IPs. Two questions:

Are there any problems if both routers and machines from both subnets are connected into one switch? Security issues doesn't matter there. I need to know if there are some performance or other problems.
Is it possible to make machines from different subnets to see each other if they all are connected into one switch? Some static routing, add ARP records or somethig else ...

I just want to avoid configuring second ethernet adaptors, third router or something. And I need to connect these subnets vai high-speed local network.

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