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How can I make different subnets on the same segment see each other. A router would work no doubt, but there must be something easier.

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by McKayTech In reply to subnets

This is kind of an interesting request and I think there are only 2 options.

One would be to bind 2 IP addresses to each NIC (1 from each subnet). That option leaves a lot to be desired from a simplicity standpoint.

The other would be to implement a non-IP protocol such as NetBeui and run it along with IP.

paul

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by McKayTech In reply to subnets

With respect to answer 2, I would only offer the thought that in a fully switched environment, workstations will not necessarily "see" each other but will rather only see the packets destined for that switch port.

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by Homer Simpson Instructor at Large In reply to subnets

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by Some Guy in Seattle In reply to subnets

Simple answer: you can't. Must have a router. If you don't want to buy one then you can assign multiple addresses to a single NIC in most operating systems, thereby turning that device into a (virtual) router. Note that in this case the bandwidthwill essentially be cut in half since the traffic will be traveling twice on the same cable (try full-duplex to help out on this).

Technically speaking, all the devices on the same segment do "see" each other, but will not respond unless they know the traffic is for them. Put a packet sniffer on the line and you'll see what I mean.

Hope that helps,

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by Homer Simpson Instructor at Large In reply to subnets

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by Kevin Anderson In reply to subnets

Realistically, you can't. Yes, there are ugly nightmarish solutions, but they are far more trouble than they are worth.

If budget constraints will not allow a Cisco (or whatever) router, throw in a Linux box running 2 Nics, and route with it.I'll also add that in my opinion, having 2 subnets on the same segment isn't a great idea. Administration is increased, and you've already hear people describe ways to bind a second IP so that one machine can see both subnets. If you are already trying to connect them so they can see each other, you are likely better off just using a single subnet.

Kev.

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by Homer Simpson Instructor at Large In reply to subnets

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by Homer Simpson Instructor at Large In reply to subnets

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