5-16 
domain-name 
Syntax 
domain-name domain-name 
undo domain-name 
View 
DHCP address pool view 
Default Level 
2: System level 
Parameters 
domain-name: Domain name suffix for DHCP clients, a string of 1 to 50 characters. 
Description 
Use the domain-name command to specify a domain name suffix for the DHCP clients in the DHCP 
address pool. 
Use the undo domain-name command to remove the domain name suffix assigned from the DHCP 
address pool to the DHCP client. 
No domain name suffix is specified by default. 
Related commands: dhcp server ip-pool and display dhcp server tree. 
Examples 
# Specify a domain name suffix of mydomain.com for the DHCP clients in DHCP address pool 0. 
<Sysname> system-view 
[Sysname] dhcp server ip-pool 0 
[Sysname-dhcp-pool-0] domain-name mydomain.com 
expired 
Syntax 
expired { day day [ hour hour [ minute minute ] ] | unlimited } 
undo expired 
View 
DHCP address pool view 
Default Level 
2: System level 
Parameters 
day day: Specifies the number of days, in the range of 0 to 365. 
hour hour: Specified 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. 
unlimited: Specifies the infinite duration, which is actually 136 years. 
Description 
Use the expired command to specify the lease duration in a DHCP address pool. 
Use the undo expired command to restore the default lease duration in a DHCP address pool.