What physical interface/port are you on? You need to add interface into the VLAN, or associated VLAN to interface, Junos allows for both options. If this correct and still not working, then:
Does your PC/device see the switch IP and MAC in it's arp table? Something like arp -a I think works on windows, I know it works on my MAC. I assume you are seeing link on the interface/port, yes?