Configuring L2 and L3 Relay Features 1103
Figure 34-11. Add Helper IP Address
3.
Select the interface to use for the relay.
4.
Select a UDP Destination port name from the menu or enter the UDP
Destination Port ID. Select the Default Set to configure for the relay entry
for the default set of protocols.
5.
Choose whether to discard (True) or keep (False)
packets arriving on the
given interface with the given destination UDP port.
6.
Enter the IP address of the server to which the packets with the given UDP
Destination Port will be relayed.
7.
Click
Apply
.
The UDP/Helper Relay is added to the interface and the device is updated.
NOTE: If the DefaultSet option is specified, the de vice by default forwards
UDP Broadcast packets for the following services: IEN-116 Name Se rvice
(port 42), DNS (port 53), NetBIOS Name Server (port 137), NetBIOS Datagram
Server (port 138), TACACS Server (Port 49), and Time Service (port 37).