There’s a number of steps that need to be done to set up your own mini lab of the Brocade Vyatta router. Firstly instead of re-inventing the wheel on my blog please follow all instructions given on the below blog post:
Instead of uploading to Datastore and using vcenter you can use the free VMplayer that VMWare offers.
After completing the installation steps you should be able to SSH into the vyatta VM and also make configuration changes. One additional step I would recommend is to hit the command save after running commit at the end of instruction set.