Example: Configuring UDP helper to convert broadcast to unicast

As shown in Figure 57, configure UDP helper to convert broadcast to unicast on VLAN-interface 1 of Switch A. This feature enables Switch A to forward broadcast packets with UDP destination port number 55 to the destination server 10.2.1.1/16.

	IMPORTANT: By default, interfaces on the device are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface.

Make sure Switch A can reach the subnet 10.2.0.0/16.

# Enable UDP helper.

[SwitchA] System-view
[SwitchA] udp-helper enable

# Enable the UDP port 55 for UDP helper.

[SwitchA] udp-helper port 55

# Specify the destination server 10.2.1.1 for UDP helper to convert broadcast to unicast on VLAN-interface 1.

[SwitchA] interface vlan-interface 1
[SwitchA-Vlan-interface1] ip address 10.110.1.1 16
[SwitchA-Vlan-interface1] udp-helper server 10.2.1.1

# Display information about broadcast to unicast conversion by UDP helper on VLAN-interface 1.

[SwitchA-Vlan-interface1] display udp-helper interface vlan-interface 1
Interface                Server VPN instance           Server address Packets sent
Vlan-interface1          N/A                           10.2.1.1       5