Serving two subnets on same VLAN

Norman Elton normelton at
Sun Sep 25 22:57:32 UTC 2011

> Can you just clarify that when you say primary and secondary?

Multiple L3 interfaces (IP addresses) on the same L2 VLAN. Normally,
only the "primary" interface does DHCP relaying, so the DHCP server
would only assign addresses from the pool containing IP address of
that primary interface. It sounds like the shared-network stanza will
let the DHCP server know that other L3 interfaces are available.

I will test this in depth tomorrow and post back if there are problems!


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