default-router ipAddressPrimary [ ipAddressSecondary ]
Command introduced before JUNOSe Release 7.1.0.
Specifies the IP address of the router that the subscriber's computer will use for traffic destined for locations beyond the local subnet. The default router must be on the same subnet as the local server pool addresses configured with the network command. The no version removes the association between the address pool and the router.
DHCP Local Pool Configuration