Cisco Cisco Packet Data Gateway (PDG) Fehlerbehebungsanleitung
DHCP Service Configuration Mode Commands
▀ lease-duration
▄ Cisco ASR 5000 Series Command Line Interface Reference
OL-22947-02
lease-duration
Configures the minimum and maximum allowable lease times that are accepted in responses from DHCP servers.
Product
GGSN, ASN-GW
Privilege
Security Administrator, Administrator
Syntax
Default: 600
Specifies the minimum acceptable lease time.
Specifies the minimum acceptable lease time.
is measured in seconds and can be configured to any integer value from 600 to 3600.
Default: 86400
Specifies the maximum acceptable lease time.
Specifies the maximum acceptable lease time.
is measured in seconds and can be configured to any integer value from 10800 to 4294967295.
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
command.
Example
The following command configures the minimum allowable lease time for the system to be 1000 and the maximum to
be 36000:
The following command configures the minimum allowable lease time for the system to be 1000 and the maximum to
be 36000: