R211x-HP Flexfabric 11900 Layer 3 - IP Services Command Reference

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Predefined user roles
network-admin
mdc-admin
Parameters
auto: Automatically calculates the refresh interval. The more the entries, the shorter the refresh interval.
The shortest interval must not be less than 500 ms.
interval interval: Specifies the refresh interval in the range of 1 to 120 seconds.
Usage guidelines
If you use this command multiple times, the most recent configuration takes effect.
Examples
# Set the refresh interval to 100 seconds.
<Sysname> system-view
[Sysname] dhcp relay client-information refresh interval 100
Related commands
• dhcp relay client-information record
• dhcp relay client-information refresh enable
dhcp relay client-information refresh enable
Use dhcp relay client-information refresh enable to enable the relay agent to periodically refresh
dynamic relay entries.
Use undo dhcp relay client-information refresh enable to disable the relay agent to periodically refresh
dynamic relay entries.
Syntax
dhcp relay client-information refresh enable
undo dhcp relay client-information refresh enable
Default
The DHCP relay agent periodically refreshes relay entries.
Views
System view
Predefined user roles
network-admin
mdc-admin
Usage guidelines
A DHCP client unicasts a DHCP-RELEASE message to the DHCP server to release its IP address. The
DHCP relay agent conveys the message to the DHCP server and does not remove the IP-to-MAC entry of
the client.
With this feature, the DHCP relay agent uses the IP address of a client and the MAC address of the DHCP
relay interface to periodically send a DHCP-REQUEST message to the DHCP server.