udp-helper port
Syntax
udp-helper port { port-number | dns | netbios-ds | netbios-ns | tacacs | tftp | time }
undo udp-helper port { port-number | dns | netbios-ds | netbios-ns | tacacs | tftp | time }
View
System view
Default level
2: System level
Parameters
port-number: Specifies the UDP port number with which packets need to be forwarded, in the range of 1 to 65535 (except 67 and 68).
dns: Forwards DNS data packets. The corresponding UDP port number is 53.
netbios-ds: Forwards NetBIOS data packets. The corresponding UDP port number is 138.
netbios-ns: Forwards NetBIOS name service data packets. The corresponding UDP port number is 137.
tacacs: Forwards terminal access controller access control system (TACACS) data packet. The corresponding UDP port number is 49.
tftp: Forwards TFTP data packets. The corresponding UDP port number is 69.
time: Forwards time service data packets. The corresponding UDP port number is 37.
Description
Use udp-helper port to enable the forwarding of packets with the specified UDP port number.
Use undo udp-helper port to remove the configured UDP port numbers.
By default, no UDP port number is specified.
You can configure up to 256 UDP ports on a device.
All of the specified UDP port numbers will be removed if UDP helper is disabled.
Examples
# Forward broadcast packets with the UDP destination port number 100.
<Sysname> system-view [Sysname] udp-helper port 100