Users Guide

Adding a Static Entry in the Binding Table
To add a static entry in the binding table, use the following command.
• Add a static entry in the binding table.
EXEC Privilege mode
ip dhcp snooping binding mac mac-address vlan-id vlan-id ip ip-address interface interface-
type interface-number lease lease-value
If multiple IP addresses are expected for the same MAC address, repeat this step for all IP addresses.
Clearing the Binding Table
To clear the binding table, use the following command.
• Delete all of the entries in the binding table.
EXEC Privilege mode
clear ip dhcp snooping binding
Displaying the Contents of the Binding Table
To display the contents of the binding table, use the following command.
• Display the DHCP snooping information.
EXEC Privilege mode
show ip dhcp snooping
• Display the contents of the binding table.
EXEC Privilege mode
show ip dhcp snooping binding
Example of the show ip dhcp snooping Command
View the DHCP snooping statistics with the show ip dhcp snooping command.
View the DHCP snooping binding table using the show ip dhcp snooping binding command.
The following example output of the show ip dhcp snooping binding command displays that dierent IP addresses are mapped
to the same MAC address:
The following example shows a sample output of the show ip dhcp snooping binding command for a device connected to both
the VLT peers. The Po 10 interface is the VLT port channel connected to a ToR switch or an end device.
DellEMC#show ip dhcp snooping binding
Codes : S - Static D - Dynamic
IP Address MAC Address Expires(Sec) Type VLAN Interface
=========================================================================
10.1.1.10 00:00:a0:00:00:00 39735 S Vl 200 Po 10
10.1.1.11 00:00:a0:00:00:00 39736 S Vl 200 Po 10
10.1.1.25 00:00:a0:00:00:00 162 D Vl 200 Po 10
The following example shows a sample output of the show ip dhcp snooping binding command for a device connected to one of
the VLT peers only (orphaned). The physical interface is the one that is directly connected to the VLT peer.
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Dynamic Host Conguration Protocol (DHCP)