R2511-HP MSR Router Series Layer 3 - IP Services Command Reference(V5)

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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.
Usage guidelines
You can configure a UDP port either by specifying the port number or by specifying the keyword. For
example, using the udp-helper port 53 command and using the udp-helper port dns command lead to
the same result.
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
udp-helper server
Use udp-helper server to specify a destination server for UDP helper.
Use undo udp-helper server to remove a destination server for UDP helper.
Syntax
udp-helper server ip-address
undo udp-helper server [ ip-address ]
Default
No destination server is specified.
Views
Interface view
Default command level
2: System level
Parameters
ip-address: IP address of a destination server, in dotted decimal notation.
Usage guidelines
You can specify a maximum of 20 destination servers on an interface.
If you do not specify the ip-address argument, the undo udp-helper server command removes all
destination servers on the interface.
Examples
# Specify the IP address of the destination server as 192.1.1.2 on the interface Ethernet 1/1.
<Sysname> system-view
[Sysname] interface ethernet 1/1
[Sysname-Ethernet1/1] udp-helper server 192.1.1.2