Enabling client offline detection on the DHCP relay agent
When an ARP entry ages out, the client offline detection feature deletes the relay entry for the IP address and sends a RELEASE message to the DHCP server. The feature does not function if an ARP entry is manually deleted.
To enable client offline detection on the DHCP relay agent:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enable the relay agent to record relay entries. | dhcp relay client-information record | By default, the relay agent does not record relay entries. Without relay entries, client offline detection cannot function correctly. |
3. Enter interface view. | interface interface-type interface-number | N/A |
4. Enable the DHCP relay agent. | dhcp select relay | By default, when DHCP is enabled, an interface operates in the DHCP server mode. |
5. Enable client offline detection. | dhcp client-detect | By default, client offline detection is disabled on the DHCP relay agent. |