Newer JunOS Versions numbers

Question

What is the meaning of the new JunOS version numbers in the 12.1 line?

• 12.1X44
• 12.1X45
• 12.1X46

What does the XNN mean? How can I tell which one I want?

Answer 1

X indicates that it is a aggressive feature train per KB27144 and TSB16034. The NN is a normal incremental version number.

Answer 2

NN in 12.1XNN means. Its a special branch version. The code has been specifically modified for a particular customer or for a particular fix. :)