3com MSR 20-20 참조 매뉴얼

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820
C
HAPTER
 62: UDP H
ELPER
 C
ONFIGURATION
 C
OMMANDS
<Sysname> reset udp-helper packet 
udp-helper enable
Syntax
udp-helper enable
undo udp-helper enable
View
System view
Parameter
None
Description
Use the udp-helper enable command to enable UDP Helper.
Use the undo udp-helper enable command to disable UDP Helper.
By default, UDP Helper is disabled.
Example
# Enable UDP Helper
<Sysname> system-view
[Sysname] udp-helper enable 
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
Parameter
port-number: 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 
packets. 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.