PLANET WGSW-52040 - Manual (Page 542)

33-82
Command Mode:
Port mode
Default Settings:
By default, all ports are non-trusted ports
Usage Guide:
Only when DHCP Snooping is globally enabled, can this command be set. When a port turns into a trusted port from
a non-trusted port, the original defense action of the port will be automatically deleted; all the security history records
will be cleared (except the information in system log).
Example:
Set port ethernet1/1 as a DHCP Snooping trusted port
switch(config)#interface ethernet 1/1
switch(Config- Ethernet 1/1)#ip dhcp snooping trust
33.27 ip user helper-address
Command:
ip user helper-address <svr_addr> [port <udp_port>] source _addr> [secondary]
no ip user helper-address [secondary]
Function:
Set the address and port of HELPER SERVER.
Parameters:
: The IP address of HELPER SERVER IP in dotted-decimal notation.
udp_port: The UDP port of HELPER SERVER, the range of which is1－65535, and its default value is 9119.
src_addr: The local management IP address of the switch, in dotted-decimal notation.
sencondary: Whether it is a secondary SERVER address.
Command Mode:
Global mode
Default Settings:
There is no HELPER SERVER address by default.