Configuring Dhcp Server Load Sharing For Dhcp Relay; Releasing Client Ip Address By Dhcp Relay - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
Perform the following configuration in system view to specify an external DHCP server
address to which the DHCP broadcasts received on the specified interfaces are to be
forwarded.
Table 9-42 Configure an external DHCP server address for multiple interfaces
Specify an external DHCP server
address for the interfaces in the
specified range
Remove
server address for the interfaces
in the specified range
Note:
Since the packets sent by the DHCP client are broadcast in some stages, the
corresponding interface must support broadcast.
Up to 20 external DHCP server addresses can be configured on an interface.

9.6.3 Configuring DHCP Server Load Sharing for DHCP Relay

You can use DHCP relay to configure several DHCP servers and share traffic load
between them.
When multiple DHCP servers are configured, the DHCP Relay can distribute among
them requests from the clients using the HASH algorithm and thus achieve load
sharing.
Perform the following configurations in the system view.
Table 9-43 Configure DHCP server load sharing
Configures DHCP server load sharing
Cancel DHCP server load sharing
By default, no load sharing between DHCP servers is available.

9.6.4 Releasing Client IP Address by DHCP Relay

Sometimes you may release the IP address of a client by DHCP relay.
Perform the following configurations in interface view or system view.
Operation
an external DHCP
Operation
3Com Corporation
Command
ip relay address ip-address [ interface
interface-type interface-number
interface-type interface-number | all ]
undo ip relay address { ip-address | all }
{ interface interface-type interface-number [ to
interface-type interface-number ] | all }
ip relay address cycle
undo ip relay address cycle
9-39
Chapter 9 DHCP Configuration
[
Command
to