(Optional) Requesting the DHCP Server to Release the Client IP Address

The DHCP relay agent can request the DHCP server for releasing the IP address assigned to the client.

Context

When a DHCP client does not need an IP address or a user needs to be logged out, run the dhcp relay release command on the DHCP relay agent to send a Release message to the DHCP server. After the DHCP server receives the Release message, the server releases the specified IP address.

Perform the following steps on the Device that functions as a DHCP relay agent:

Procedure

Request all the DHCP servers to release the client IP address.
1. Run system-view
  The system view is displayed.
2. Run dhcp relay release client-ip-address mac-address
  The DHCP relay agent is configured to request DHCP servers to release the client IP address.
Request the specified DHCP server to release the client IP address.
1. Run system-view
  The system view is displayed.
2. Run dhcp relay release client-ip-address mac-address [ server-ip-address ]
  The DHCP relay agent is configured to request the specified DHCP server to release the client IP address.
Request the DHCP server connected to an interface to release the client IP address.
1. Run system-view
  The system view is displayed.
2. Run interface interface-type interface-number
  The interface view is displayed.
3. Run dhcp relay release client-ip-address mac-address [ server-ip-address ]
  The DHCP relay agent is configured to request the DHCP server connected to the interface to release the client IP address.