H3C Technologies H3C SecPath F1000-E - Manual (Page 53)

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To do… Use the command… Remarks
Configure a timeout waiting for
ping responses dhcp server ping timeout
milliseconds
Optional
500 ms by default.
The value 0 indicates that no ping
operation is performed.
Configuring the Handling Mode for Option 82
When the DHCP server receives a message with Option 82, if the server is configured to handle Option
82, it will return a response message carrying Option 82 to assign an IP address to the requesting client.
If the server is configured to ignore Option 82, it will assign an IP address to the client without adding
Option 82 in the response message.
Configuration prerequisites
Before performing this configuration, complete the following configuration on the DHCP server:
• Enable DHCP
• Configure the DHCP address pool
Configuring the handling mode for Option 82
Follow these steps to enable the DHCP server to handle Option 82:
To do… Use the command… Remarks
Enter system view system-view —
Enable the server to handle Option
82 dhcp server relay information
enable Optional
Enabled by default.
NOTE:
To support Option 82, it is required to perform configuration on both the DHCP server and relay agent.
For related configuration details, refer to
Configuring the DHCP Relay Agent to Support Option 82 .
Enabling Sending of Trap Messages
Configuration Prerequisites
Before performing the configuration, use the snmp-agent target-host command to specify the destination
address of the trap messages. For detailed information about the command, refer to SNMP Commands
in the System Volume.
Configuration Procedure
You can enable a DHCP server to send trap messages to the network management server when the ratio
of successfully allocated IP addresses to received DHCP requests, the average IP address utilization of the
address pool, or the maximum IP address utilization of the address pool reaches the threshold. Trap
messages help network administrators know the latest usage information of the DHCP server.
Follow these steps to enable the DHCP server to send trap messages: