Configuration example

As shown in Figure 53, the default gateway of the host is the IP address 1.1.1.2/24 of VLAN-interface 3 of Switch A.

Switch B can receive directed broadcasts from the host to IP address 2.2.2.255.

1. Configure Switch A:

   # Specify IP addresses for VLAN-interface 3 and VLAN-interface 2.

   <SwitchA> system-view
   [SwitchA] interface vlan-interface 3
   [SwitchA-Vlan-interface3] ip address 1.1.1.2 24
   [SwitchA-Vlan-interface3] quit
   [SwitchA] interface vlan-interface 2
   [SwitchA-Vlan-interface2] ip address 2.2.2.2 24
   

   # Enable VLAN-interface 2 to forward directed broadcasts directed for the directly connected network.

   [SwitchA-Vlan-interface2] ip forward-broadcast
   

2. Configure Switch B:

   # Configure a static route to the host.

   <SwitchB> system-view
   [SwitchB] ip route-static 1.1.1.1 24 2.2.2.2
   

   # Specify an IP address for VLAN-interface 2.

   [SwitchB] interface vlan-interface 2
   [SwitchB-Vlan-interface2] ip address 2.2.2.1 24
   

After the configurations are completed, if you ping the subnet-directed broadcast address 2.2.2.255 on the host, VLAN-interface 2 of Switch B can receive the ping packets. If you delete the ip forward-broadcast configuration on any switch, the interface cannot receive the ping packets.