User's Manual

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no ip dhcp-relay snooping
write-time
Resumes the interval of checking interface binding
backup to the default settings.
44.1.15 Setting Interface Binding Manually
If a host does not obtain the address through DHCP, you can add the binding item on an interface of a switch
to enable the host to access the network. You can run no ip source binding MAC IP to delete items from the
corresponding binding list.
Note that the manually-configured binding items have higher priority than the dynamically-configured binding
items. If the manually-configured binding item and the dynamically-configured binding item have the same
MAC address, the manually-configured one updates the dynamically-configured one. The interface binding
item takes the MAC address as the unique index.
Run the following commands in global configuration mode.
Command Operation
ip source binding MAC IP interface
name [vlan vlan-id ]
Configures Interface Binding Manually
no ip source binding MAC IP vlan
vlan-id
Cancels an interface binding item.
44.1.16 Monitoring and Maintaining DHCP-Snooping
Run the following commands in EXEC mode:
Command Operation
show ip dhcp-relay snooping
Displays the information about DHCP-
snooping configuration.
show ip dhcp-relay snooping binding
Displays the effective address binding items
on an interface.
show ip dhcp-relay snooping binding all
Displays all binding items which are
generated by DHCP snooping.
[ no ] debug ip dhcp-relay [ snooping |
binding | event | all ]
Enables or disables the switch of DHCP
relay snooping binding or event.
The following shows the information about the DHCP snooping configuration.
switch#show ip dhcp-relay snooping
ip dhcp-relay snooping vlan 3
ip arp inspection vlan 3
DHCP Snooping trust interface:
GigaEthernet0/1
ARP Inspect interface: