Cisco Cisco Packet Data Interworking Function (PDIF)
DHCP Service Configuration Mode Commands
lease-duration ▀
Command Line Interface Reference, StarOS Release 18 ▄
3493
lease-duration
Configures the minimum and maximum allowable lease times that are accepted in responses from DHCP servers.
Product
GGSN
ASN-GW
HA
P-GW
SAEGW
Privilege
Security Administrator, Administrator
Mode
Exec > Global Configuration > Context Configuration > DHCP Service Configuration
configure > context context_name > dhcp-service service_name
Entering the above command sequence results in the following prompt:
[context_name]host_name(config-dhcp-service)#
Syntax
lease-duration min min_time max max_time
min
min_time
Specifies the minimum acceptable lease time (in seconds) as an integer from 600 trough 3600. Default: 600
max
max_time
Specifies the maximum acceptable lease time (in seconds) as an integer from 10800 through 4294967295.
Default: 86400
Default: 86400
Usage
To reduce the call setup time, the system requests IP addresses from the DHCP server in blocks rather than on
a call-by-call basis. Each address received has a corresponding lease time, or time that it is valid. The values
configured by command represent the minimum and maximum times that the system allows and negotiates
for the lease(s).
If the DHCP server responds with values that are out of the range specified by the min and max values, the
system accumulates warning statistics. Responses that fall below the minimum value are rejected by the
system and the system contacts the DHCP server with the next highest priority. Responses that are greater
than the maximum value are accepted.
When half of the lease time has expired, the system automatically requests a lease renewal from the DHCP
server. This is configured using the
a call-by-call basis. Each address received has a corresponding lease time, or time that it is valid. The values
configured by command represent the minimum and maximum times that the system allows and negotiates
for the lease(s).
If the DHCP server responds with values that are out of the range specified by the min and max values, the
system accumulates warning statistics. Responses that fall below the minimum value are rejected by the
system and the system contacts the DHCP server with the next highest priority. Responses that are greater
than the maximum value are accepted.
When half of the lease time has expired, the system automatically requests a lease renewal from the DHCP
server. This is configured using the
T1-threshold
command.
Example
The following command configures the minimum allowable lease time for the system to be
1000
and the
maximum to be
36000
: