2.1.4 Configuring Direct Broadcast Forwarding

Points to note

To enable directed broadcast forwarding, you need to enable the directed-broadcast parameter for the ip address command. When subnet broadcast packet forwarding is disabled by using the no ip subnet-broadcast command, execute the ip subnet-broadcast command to enable subnet broadcast packet forwarding.

Command examples

1. (config)# interface vlan 100

   Switches to interface configuration mode for VLAN ID 100.

2. (config-if)# ip subnet-broadcast

   Enables the subnet broadcast packet forward option (this setting is required only when the no ip subnet-broadcast command has been executed).

3. (config-if)# ip address 170.10.10.1 255.255.255.0 directed-broadcast

   Sets primary IP address 170.10.10.1 and subnet mask 255.255.255.0 for VLAN ID 100, and enables direct broadcast IPv4 packet forwarding.