Configuring UDP helper to convert broadcast to unicast
Network requirements
As shown in Figure 74, configure UDP helper to convert broadcast to unicast on GigabitEthernet 1/0/1 of Router A. This feature enables Router A to forward broadcast packets with UDP destination port 55 to the destination server 10.2.1.1/16.
Figure 74: Network diagram
Configuration procedure
Make sure Router A can reach the subnet 10.2.0.0/16.
# Enable UDP helper.
<RouterA> system-view [RouterA] udp-helper enable
# Specify the UDP port 55 for UDP helper.
[RouterA] udp-helper port 55
# Specify the destination server 10.2.1.1 for UDP helper to convert broadcast to unicast on GigabitEthernet 1/0/1.
[RouterA] interface gigabitethernet 1/0/1 [RouterA-GigabitEthernet1/0/1] ip address 10.110.1.1 16 [RouterA-GigabitEthernet1/0/1] udp-helper server 10.2.1.1
Verifying the configuration
# Display information about broadcast to unicast conversion by UDP helper on GigabitEthernet 1/0/1.
[RouterA-GigabitEthernet1/0/1] display udp-helper interface gigabitethernet 1/0/1 Interface Server VPN instance Server address Packets sent GigabitEthernet1/0/1 N/A 10.2.1.1 5