Steps to configure interface-range on Juniper EX/SRX devies

Configure vlan: 
user@juniper# set vlans voip vlan-id 10 

Configuring the interface-range "test" to be a part of a vlan (voip):
user@juniper# set interfaces interface-range test unit 0 family ethernet-switching vlan members voip

Adding member interfaces (actual physical interface) to the interface range:
user@juniper# set interfaces interface-range test member-range ge-0/0/0.0 to ge-0/0/10 

user@juniper# commit
configuration check succeeds
commit complete

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