Specifying The Threshold For Sending Trap Messages; Configuration Prerequisites; Configuration Procedure; Setting The Dscp Value For Dhcp Packets - HP 3600 v2 Series Configuration Manual

Specifying the threshold for sending trap messages

Configuration prerequisites

Before you perform the configuration, use the snmp-agent target-host command to specify the
destination address of the trap messages. For more information about the command, see Network
Management and Monitoring Command Reference.

Configuration procedure

A DHCP server sends trap messages to the network management server when one of the following items
reaches the specified threshold:
The ratio of successfully allocated IP addresses to received DHCP requests
•
The average IP address utilization of the address pool
•
• The maximum IP address utilization of the address pool
Trap messages help network administrators know the latest usage information about the DHCP server.
To specify the threshold for sending trap messages:
Step
1. Enter system view.
2. Specify the threshold for
sending trap messages to the
network management server.

Setting the DSCP value for DHCP packets

An IPv4 packet header contains an 8-bit Type of Service (ToS) field. As defined in RFC 2474, the first six
bits set the Differentiated Services Code Point (DSCP) value, and the last two bits are reserved. Network
devices use the DSCP value as a reference to determine the packet priority for transmission.
To set the DSCP value for DHCP packets:
Step
1. Enter system view.
2. Set the DSCP value for DHCP packets
sent by the DHCP server.

Displaying and maintaining the DHCP server

IMPORTANT:
A restart of the DHCP server or execution of the reset dhcp server ip-in-use command deletes all lease
information. The DHCP server denies any DHCP request for lease extension, and the client must request an
IP address again.
Command
system-view
dhcp server threshold { allocated-ip
threshold-value | average-ip-use
threshold-value | max-ip-use threshold-value }
Command
system-view
dhcp dscp dscp-value
52
Remarks
N/A
Optional.
Disabled by default.
Remarks
N/A
Optional.
By default, the DSCP value is 56.