i don't know if this book already here anyway i upload it for sharing the knowledge .....
What’s in This Book?
The ultimate purpose of this book is to be the single most complete source for working
knowledge related to Juniper Networks enterprise switching on the EX platform. Although
you won’t find much focus on actual packet formats and fields, topics for which there is already plentiful coverage on the Internet and in bookstores, you will find
information on how to effectively deploy JUNOS switching technology in your
network..........