3com 8807 Reference Guide

Use the undo option command to remove a custom DHCP option configured for 
the global DHCP address pool.

If you execute the option command multiple times, the new configurations 
overwrite the corresponding old ones

Related command: dhcp server ip-pool, dhcp server option.

# Configure a custom option for the global DHCP address pool, with an option 
value of 100 and two hexadecimal numbers of 0x11 and 0x22.

<SW8800> system-view

 

System View: return to User View with Ctrl+Z.

 

[SW8800] dhcp server ip-pool 0

 

[3Com-dhcp-0] option 100 hex 11 22 

reset dhcp server conflict { ip ip-address | all }

User view

ip-address: Clears statistics about the specified IP address conflicts.

all: Clears all statistics about address conflicts.

Use the reset dhcp server conflict command to clear statistics information about 
DHCP address conflicts.

Related command: display dhcp server conflict.

# Clear all statistics information about DHCP address conflicts.

<SW8800> reset dhcp server conflict all 

reset dhcp server ip-in-use{ all | interface [ vlan-interface vlan-id ] | ip 
ip-address | pool [ pool-name ] }

User view

all: Specifies all binding entries.

ip-address: Specifies the binding entry that contains the specified IP address.