101
Task Command Remarks
devices in standalone
mode/centralized devices in IRF
mode).
Display DHCP packet statistics on the
DHCP snooping device (distributed
devices in IRF mode).
display dhcp snooping packet statistics
[
chassis
chassis-number
slot
slot-number ]
Available in any
view.
Display information about trusted
ports.
display dhcp snooping trust
Available in any
view.
Display information about the file that
stores DHCP snooping entries.
display dhcp snooping binding database
Available in any
view.
Clear DHCP snooping entries.
reset dhcp snooping binding
{
all
|
ip
ip-address [
vlan
vlan-id ] }
Available in user
view.
Clear DHCP packet statistics on the
DHCP snooping device (centralized
devices in standalone mode).
reset dhcp snooping packet statistics
Available in user
view.
Clear DHCP packet statistics on the
DHCP snooping device (distributed
devices in standalone
mode/centralized devices in IRF
mode).
reset dhcp snooping packet statistics
[
slot
slot-number ]
Available in user
view.
Clear DHCP packet statistics on the
DHCP snooping device (distributed
devices in IRF mode).
reset dhcp snooping packet statistics
[
chassis
chassis-number
slot
slot-number ]
Available in user
view.
DHCP snooping configuration examples
Basic DHCP snooping configuration example
Network requirements
As shown in Figure 37:
• Configure the port GigabitEthernet 1/0/1 connected to the DHCP server as a trusted port.
• Configure other ports as untrusted ports.
• Enable DHCP snooping to record clients' IP-to-MAC bindings by reading DHCP-ACK
messages received from the trusted port and DHCP-REQUEST messages.
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