Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide Chapter 7 UDP Helper Configuration Commands
3Com Corporation
7-3
Parameter
port: UDP port number in the UDP broadcasts to be forwarded. It ranges from 1 to
65,535.
dns: Domain name service, corresponding to UDP port 53.
netbios-ds: NetBios datagram service, corresponding to UDP port 138.
netbios-ns: NetBios name service, corresponding to UDP port 137.
tacacs: TAC access control system, corresponding to UDP port 49.
tftp: Trivial file transfer protocol, corresponding to UDP port 69.
time: Time service, corresponding to UDP port 37.
Description
Use the udp-helper port command to specify the UDP port number in the UDP
broadcasts to be forwarded.
Use the undo udp-helper port command to disable the system to forward the UDP
broadcasts with the specified UDP port number.
Example
# Configure the system to forward the UDP broadcasts with the UDP port number of
DNS.
[3Com] udp-helper port dns
7.1.5 udp-helper server
Syntax
udp-helper server ip-address
undo udp-helper server [ip-address ]
View
Ethernet interface view
Parameter
ip-address: IP address of the destination server, in dotted decimal format.
Description
Use the udp-helper server command to configure the destination server to which the
UDP broadcasts received on the interface are forwarded.
Use the undo udp-helper server command to remove the configured destination
server.
By default, no destination server is configured.