3com MSR 20-20 참조 매뉴얼

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DHCP S
NOOPING
 C
ONFIGURATION
 
C
OMMANDS
dhcp-snooping
Syntax
dhcp-snooping
undo dhcp-snooping
View
System view
Parameter
None
Description
Use the dhcp-snooping command to enable DHCP snooping.
Use the undo dhcp-snooping command to disable DHCP snooping.
With DHCP snooping disabled, all ports can forward responses from any DHCP 
servers and does not record binding information about MAC addresses of DHCP 
clients and the obtained IP addresses.
By default, DHCP snooping is disabled.
Related command:
Example
# Enable DHCP snooping.
[Sysname] dhcp-snooping 
dhcp-snooping trust
Syntax
dhcp-snooping trust
undo dhcp-snooping trust
View
Layer 2 Ethernet interface view
Parameter
None
Description
Use the dhcp-snooping trust command to set a port as trusted.
Use the undo dhcp-snooping trust command to restore the default state of a 
port.