3Com Switch 4500 Family Manual page 628

udp-helper server
Syntax
udp-helper server ip-address
undo udp-helper server [ ip-address ]
View
VLAN interface view
Parameters
ip-address: IP address of the destination server, in dotted decimal notation.
Description
Use the udp-helper server command to specify the destination server to which the UDP packets are to
be forwarded.
Use the undo udp-helper server command to remove the specified destination server.
No destination server is specified by default.
Note that:
Executing the undo udp-helper server command without specifying the ip-address argument
removes all the destination servers configured on the current interface.
You can specify up to 20 destination server IP addresses on a VLAN interface.
Related commands: display udp-helper server.
Examples
# Specify the destination server at 192.1.1.2 for VLAN-interface 1.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] interface Vlan-interface 1
[Sysname-Vlan-interface1] udp-helper server 192.1.1.2
# Remove all the specified destination servers for VLAN-interface 1.
[Sysname-Vlan-interface1] undo udp-helper server
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