Configuring Udp Helper - H3C S3610 Series Operation Manual

Operation Manual – UDP Helper
H3C S3610&S5510 Series Ethernet Switches
Table 1-1 List of default UDP ports
TFTP (trivial file transfer protocol)
DNS (domain name system)
Time service
NetBIOS-NS (NetBIOS name service)
NetBIOS-DS (NetBIOS datagram service)
TACACS (terminal access controller access control system)

1.2 Configuring UDP Helper

Table 1-2 Follow these steps to configure UDP Helper
To do...
Enter system view
Enable
Helper
Specify a UDP
port
Enter
interface view
Configure
destination server
to which the UDP
broadcast
packets are to be
forwarded
Protocol
Use the command...
system-view
UDP
udp-helper enable
udp-helper
{ port-number | dns |
netbios-ds
netbios-ns | tacacs |
tftp | time }
interface interface-type
VLAN
interface-number
the
udp-helper
ip-address
1-2
Chapter 1 UDP Helper Configuration
—
Required
Disabled by default
Optional
port
By default, the UDP Helper enabled
|
device converts
broadcast packets of ports 69, 53,
37, 137, 138, and 49.
—
Required
server
No destination server is configured
by default.
UDP port number
69
53
37
137
138
49
Remarks
and forwards