R0106-HP MSR Router Series Layer 3 - IP Services Configuration Guide(V7)

Task Command

Clear relay entries on the DHCP relay agent.

reset dhcp relay client-information [ interface

interface-type interface-number | ip ip-address

[ vpn-instance vpn-instance-name ] ]

Clear packet statistics on the DHCP relay agent.

reset dhcp relay statistics [ interface interface-type

interface-number ]

DHCP relay agent configuration examples

DHCP relay agent configuration example

Network requirements

As shown in Figure 23, configure the DHCP relay agent on Router A so that DHCP clients can obtain IP

addresses and other configuration parameters from the DHCP server on another subnet.

Because the DHCP relay agent and server are on different subnets, you need to configure static or

dynamic routing to make them reachable to each other.

DHCP server configuration is also required to guarantee the client-server communication through the

DHCP relay agent. For DHCP server configuration information, see "DHCP server configuration

amples."

Figure 23 Network diagram

Configuration procedure

# Specify IP addresses for the interfaces. (Details not shown.)

# Enable DHCP.

<RouterA> system-view

[RouterA] dhcp enable

# Enable the DHCP relay agent on GigabitEthernet 2/1/1.

[RouterA] interface gigabitethernet 2/1/1

[RouterA-GigabitEthernet2/1/1] dhcp select relay

# Specify the IP address of the DHCP server on the relay agent.

[RouterA-GigabitEthernet2/1/1] dhcp relay server-address 10.1.1.1

Router B

DHCP server

Router A

DHCP relay agent

DHCP client DHCP client

DHCP clientDHCP client

GE2/1/2

10.1.1.2/24

GE2/1/1

10.10.1.1/24

GE1/0/1

10.1.1.1/24