This section describes how to check the configuration of
defense against the attacker from sending bogus Dynamic Host Configuration
Protocol (DHCP) packets for extending the IP address leases.
Prerequisites
The configurations of defense against the attacker from
sending bogus DHCP packets for extending the IP address leases are
complete.
Procedure
- Run the display dhcp snooping { interface interface-type interface-number | vlan vlan-id [ interface interface-type interface-number ] | bridge-domain bd-id } command to check the DHCP snooping
configuration.
- Run the display dhcp option82 configuration [ interface interface-type interface-number | vlan vlan-id | bridge-domain bd-id ] command
to check the configuration of the option 82 field insertion function.