Forwarding UDP Broadcasts (not all-1's)

From: Kenneth Wygand (KWygand@customonline.com)
Date: Fri Mar 05 2004 - 21:28:26 GMT-3

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Hi everyone,

If I want to forward (flood) all UDP broadcasts to all subnets attached to a router, how can this be accomplished? The application initiating the UDP broadcast is sending out a network broadcast, not an all-1's broadcast. So if the application resides on a workstation with a 10.0.0.1 address, the UDP broadcast is 10.255.255.255, not 255.255.255.255. I want the broadcast to reach all other networks attached to the router, say for example, 11.0.0.0, 12.0.0.0 and such.

As far as I understand, "IP FORWARD-PROTOCOL UDP xxx" will only forward all 1's broadcasts and will not convert the network broadcast to an all-1's broadcast. Is this correct?

For some reason I'm wondering if a "multicast helper map" can be contorted to help accomplish my goal.

Please let me know your opinions, and thank you in advance!
Ken

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