It has no impact on the broadcast domain. Broadcasts never pass through a router unless you explicitly enable it with helper-address.
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18 years ago
Subnetting, private networks & default routes
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18 years ago
I am thinking about using helper-address in the future, as I am contemplating (but haven't decided for sure, yet) about passing DHCP leases from the main site (aka the 2516) out to the remote site. IIRC, though, you can explicitly configure helper-address to pass only certain types of broadcast traffic... right?
Chris
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18 years ago
Right, with "ip forward-protocol". Anyway, once the broadcast is relayed using helper-address, it's no longer a broadcast (unless the helper-address is a directed broadcast address of one of the router's other interfaces).