Product specifications

Chapter 4: System Management Efficient Networks
®
Router family
Technical Reference Guide
Page 4-6 Efficient Networks
®
Dynamic Client Leases
Dynamic client leases are created from the pool of IP addresses associated with that
subnetwork.
To set or change the pool, use:
-> dhcp set addresses <first ip addr> <last ip addr>
To clear the values from the pool, use:
-> dhcp clear addresses <net>
NOTE:
Any client leases that currently exist will not be affected.
To remove a client lease that was dynamically created, use:
-> dhcp del <ipaddr>
CAUTION:
If the <ipaddr> parameter is a subnet, you will delete the entire subnet.
Setting the Lease Time
The information given by the DHCP server (router) to your PC is leased for a specific
amount of time. The client lease has already been selected. The DHCP server will
select the lease time based on the option defined for the client lease as described by
this algorithm:
1. If the client lease option is a specific number or is infinite, then the server uses
the specified lease time associated with this client lease.
2. If the client lease option is “default”, then the server goes up one level (to the
subnetwork) and uses the lease time explicitly specified for the subnetwork.
3. If the client and subnetwork lease options are both “default”, then the server
goes up one level (global) and uses the lease time defined at the global level
(server).
4. Lease time:
The minimum lease time is 1 hour.
The global default is 168 hours.