H3C SR8800-F, Configuration Manual

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DHCP relay agent tasks at a glance
Tasks at a glance
(Required.) Enabling DHCP
(Required.) Enabling the DHCP relay agent on an interface
(Required.) Specifying DHCP servers
(Optional.) Configuring the DHCP relay agent security features
(Optional.) Configuring the DHCP relay agent to release an IP address
(Optional.) Configuring Option 82
(Optional.) Setting the DSCP value for DHCP packets sent by the DHCP relay agent
(Optional.) Configuring DHCP packet rate limit on a DHCP relay interface
(Optional.) Specifying the DHCP relay agent address for the giaddr field
(Optional.) Specifying the source IP address for DHCP requests
(Optional.) Configuring the DHCP relay agent to always unicast relayed DHCP responses
(Optional.) Configuring forwarding DHCP replies based on Option 82
Enabling DHCP
You must enable DHCP to validate other DHCP relay agent settings.
To enable DHCP:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enable DHCP.
dhcp enable By default, DHCP is disabled.
Enabling the DHCP relay agent on an interface
With the DHCP relay agent enabled, an interface forwards incoming DHCP requests to a DHCP
server.
An IP address pool that contains the IP address of the DHCP relay interface must be configured on
the DHCP server. Otherwise, the DHCP clients connected to the relay agent cannot obtain correct IP
addresses.
To enable the DHCP relay agent on an interface:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Enable the DHCP relay
agent.
dhcp select relay
By default, when DHCP is
enabled, an interface operates in
the DHCP server mode.