Displaying And Debugging Dhcp Relay - 3Com 7700 Configuration Manual

Displaying and
Debugging DHCP Relay
Configure Corresponding DHCP Server Group of the VLAN Interface
Perform the following configuration in VLAN interface view.
Table 7 Configure/Delete the Corresponding DHCP Server Group of VLAN Interface
Operation
Configure Corresponding DHCP
Server Group of the VLAN Interface
Delete the corresponding DHCP
server group of the VLAN interface
When associating a VLAN interface to a new DHCP server group, you can
configure the association without disassociating it from the previous group.
No VLAN interface corresponds to a DHCP server group, by default.
Configure the Address Table Entry
To check the address of users who have valid and fixed IP addresses in the VLAN
(with DHCP enabled), it is necessary to add an entry in the static address table.
Perform the following configuration in system view.
Table 8 Configure/Delete the Address Table Entry
Operation
Add an entry to the address table
Delete an entry from the address
table
Enable DHCP Security Features
Enable DHCP security features will start address check on VLAN interface while
disable DHCP security features will cancel address check.
Perform the following configuration in VLAN interface view.
Table 9 Enable/Disable DHCP Security on VLAN Interfaces
Operation
Enable DHCP security features
Disable DHCP security features on
VLAN interface
After the above configuration, execute display command in all views to display the
running of the DHCP Relay configuration, and to verify the effect of the
configuration. Execute debugging command in user view to debug DHCP Relay
configuration.
Table 10 Displaying and Debugging DHCP Relay
Operation
Display the information about the
DHCP server group
Display the information about the
DHCP server group corresponding
to the VLAN interface.
Command
dhcp-server groupNo
undo dhcp-server
Command
dhcp-security ip_address mac_address { dynamic |
static }
undo dhcp-security ip_address
Command
enable address-check
disable address-check
Command
display dhcp-server groupNo
display dhcp-server interface { interface_type
interface_num | interface_name }
DHCP Relay 53