SMC Networks TigerAccess SMC7816M - Manual (Page 605)

DHCP S
NOOPING
C
OMMANDS
23-17
DHCP Snooping Commands
DHCP snooping allows a switch to protect a network from rogue DHCP
servers or other devices which send port-related information to a DHCP
server. This information can be useful in tracking an IP address back to a
physical port. This section describes commands used to configure DHCP
snooping.
Table 23-5 DHCP Snooping Commands
Command Function Mode Page
ip dhcp
snooping Enables DHCP snooping globally GC 23-18
ip dhcp
snooping vlan Enables DHCP snooping on the specified
VLAN GC 23-20
ip dhcp
snooping verify
mac-address Verifies the client’s hardware address stored in
the DHCP packet against the source MAC
address in the Ethernet header GC 23-21
ip dhcp
snooping
database write Writes all dynamically learned snooping entries
to flash memory GC 23-22
ip dhcp
snooping
service-provider-
mode Converts the IP address assigned to a host by a
DHCP server to a static entry, and registers the
host as a valid entry in the DHCP snooping table GC 23-22
ip dhcp
snooping client
limit Limits the number of host devices which can be
attached to a VDSL port IC 23-23
ip dhcp
snooping trust Configures the specified interface as trusted IC 23-24
show ip dhcp
snooping Shows the DHCP snooping configuration
settings PE 23-25
show ip dhcp
snooping
binding Shows the DHCP snooping binding table entries PE 23-26