HP MSR2000/3000/4000 Router Series Layer 3 - IP Services Command Reference

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Use undo expired to restore the default lease duration for a DHCP address pool.
Syntax
expired { day day [ hour hour [ minute minute [ second second ] ] ] | unlimited }
undo expired
Default
The lease duration of a dynamic address pool is one day.
Views
DHCP address pool view
Predefined user roles
network-admin
Parameters
day day: Specifies the number of days, in the range of 0 to 365.
hour hour: Specifies the number of hours, in the range of 0 to 23.
minute minute: Specifies the number of minutes, in the range of 0 to 59.
second second: Specifies the number of seconds, in the range of 0 to 59.
unlimited: Specifies the unlimited lease duration, which is actually 136 years.
Usage guidelines
The DHCP server assigns an IP address together with the lease duration to the DHCP client. Before the
lease expires, the DHCP client must extend the lease duration. If the lease extension operation succeeds,
the DHCP client can continue to use the IP address. If the lease option does not succeed, the DHCP client
cannot use the IP address after the lease duration expires and the DHCP server will label the IP address
as an expired address.
Examples
# Specify the lease duration as 1 day, 2 hours, 3 minutes, and 4 seconds in DHCP address pool 0.
<Sysname> system-view
[Sysname] dhcp server ip-pool 0
[Sysname-dhcp-pool-0] expired day 1 hour 2 minute 3 second 4
Related commands
• display dhcp server expired
• display dhcp server pool
• reset dhcp server expired
forbidden-ip
Use forbidden-ip to exclude IP addresses from dynamic allocation in an address pool.
Use undo forbidden-ip to cancel the configuration.
Syntax
forbidden-ip ip-address&<1-8>
undo forbidden-ip [ ip-address&<1-8> ]