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Hi everyone,

I am trying to understand how JUNOS version is listed in device profile.   

Example:    Device profile for vQFX shows following for Version under Selector field:

Version: (1[89]|2[0-2])\..*

How should we interpret this ?  I  know JUNOS version is listed here . 

Much appreciated!!

This is standard regex format. Here's a breakdown of each part:

• (1[89]|2[0-2]):

  • 1[89] matches either 18 or 19 (the 1 is followed by either 8 or 9).

  • 2[0-2] matches 20, 21, or 22 (the 2 is followed by 0, 1, or 2).

  • The | acts as an OR, so this part matches 18, 19, 20, 21, or 22.

• \.:

  • The backslash \ escapes the dot, so it matches a literal period character.

• .*:

  • The dot . matches any character except a newline.

Meaning, any Junos version of 18.X, 19.X, 20.X, 21.X, or 22.X

Hi everyone,

I am trying to understand how JUNOS version is listed in device profile.   

Example:    Device profile for vQFX shows following for Version under Selector field:

Version: (1[89]|2[0-2])\..*

How should we interpret this ?  I  know JUNOS version is listed here . 

Much appreciated!!