Cheap Juniper Gear for Lab

The Juniper ERX edge routers are what isn't "real" JunOS.
It's as if they were trying to make a clone of the IOS CLI:

http://www.juniper.net/techpubs/en_US/junose10.2/information-products/topic-collections/swconfig-system-basics/id-21972.html#jd0e9955