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 }

System view

2: System level

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.

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.

# Forward broadcast packets with the UDP destination port number 100.

<Sysname> system-view
[Sysname] udp-helper port 100

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