Subnet masking for UDP forwarding addresses

The subnet mask for a UDP forwarding address is the same as the mask applied to the subnet on which the inbound UDP broadcast packet is received. To forward inbound UDP broadcast packets as limited broadcasts to other subnets, use the broadcast address that covers the subnet you want to reach. For example, if VLAN 1 has an IP address of (, you can configure the following unicast and limited broadcast addresses for UDP packet forwarding to subnet

Forwarding destination type

IP address

UDP unicast to a single device in the subnet


UDP broadcast to subnet