Defining UDP Relay

The UDP Relay feature is only available when the switch is in Layer 3 mode. Switches do not typically route IP broadcast packets between IP subnets. However, if configured, the switch can relay specific UDP Broadcast packets, received from its IPv4 interfaces, to specific destination IP addresses.

To configure the relaying of UDP packets received from a specific IPv4 interface with a specific destination UDP port, add a UDP Relay:

  1. Click IP Configuration > UDP Relay (Layer 3). The UDP Relay (Layer 3) page opens.
  2. Click Add. The Add UDP Relay page opens.
  3. Select the Source IP Interface to where the switch is to relay UDP Broadcast packets based on a configured UDP destination port. The interface must be one of the IPv4 interfaces configured on the switch.
  4. Enter the UDP Destination Port number for the packets that the switch is to relay. Select the well-known port from the drop-down list or click the port radio button to enter the number manually.
  5. Enter the Destination IP Address that receives the UDP packet relays. If this field is 0.0.0.0, UDP packets are discarded. If this field is 255.255.255.255, UDP packets are flooded to all IP interfaces.
  6. Click Apply. The UDP relay settings are defined, and the Running Configuration file is updated.