You use the address-assignment pool feature to include application-specific attributes when clients obtain an address. The client application, such as DHCP, uses the attributes to determine how addresses are assigned, and to also provide optional application-specific characteristics to the client. For example, the DHCP application might specify that a client that matches certain prerequisite information is dynamically assigned an address from a particular named range. Based on which named range is used, DHCP specifies additional DHCP attributes such as the boot-file that the client uses, the lease grace period, and the maximum lease time.
You use the dhcp-attributes statement to configure DHCP client-specific attributes for address-assignment pools. DHCP Attributes for Address-Assignment Pools describes the supported DHCP attributes.
To configure address-assignment pool attributes for DHCP clients:
- [edit access]
- user@host# edit address-assignment pool isp_1 family inet
- [edit access address-assignment pool isp_1 family inet]
- user@host# set dhcp-attributes boot-server 192.168.200.100 grace-period
3600 maximum-lease-time 18000