It's not complicated. Configure ge-0/0/23 as dhcp and the 4200 will get a default route from your cable modem.
del int ge-0/0/23
set int ge-0/0/23 unit 0 family inet dhcp
It's not complicated. Configure ge-0/0/23 as dhcp and the 4200 will get a default route from your cable modem.
del int ge-0/0/23
set int ge-0/0/23 unit 0 family inet dhcp