H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – UDP-Helper
H3C S7500 Series Ethernet Switches Chapter 1
UDP-Helper Configuration
1-2
Protocol UDP port number
NetBIOS datagram service (NetBIOS-DS) 138
TACACS (terminal access controller access control
system)
49
1.2 Configuring UDP-Helper
Follow these steps to configure UDP-Helper:
To do… Use the command… Remarks
Enter system view
system-view
—
Enable UDP-Helper
udp-helper enable
Required
UDP-Helper is disabled by
default
Configure a UDP port
as a UDP-Helper
destination port
udp-helper port { port |
dns | netbios-ds |
netbios-ns | tacacs |
tftp | time }
This operation is unnecessary
if the port is among the default
UDP ports listed in
Table 1-1.
With UDP-Helper enabled,
UDP broadcast packets
destined for the ports listed in
Table 1-1 are relayed by
default.
Enter VLAN interface
view
interface
vlan-interface vlan-id
—
Configure the
destination server to
which the matched
UDP broadcast
packets are to be
forwarded
udp-helper server
ip-address
Required
By default, no destination
server is configured