YDK not working 17.06.04 - Path is invalid: Cisco-IOS-XE-native:native about ydk-gen

[ygorelik]

It is definitely not YDK issue. The failure appears in libyang library when processing YANG statement 'enum +;'. Based on YANG-1.1 RFC-7950:

   The "enum" statement, which is a substatement to the "type"
   statement, MUST be present if the type is "enumeration".  It is
   repeatedly used to specify each assigned name of an enumeration type.
   It takes as an argument a string that is the assigned name. 

the enum argument must be a string and libyang expects that the string value is enclosed in double quotes. For some reason the XE YANG model developers starting from release 17.2.x dropped the double quotes in enum statements, which basically violates the RFC.

As a workaround I suggest edit file ~/.ydk//Cisco-IOS-XE-native.yang by taking enum values "+" and "-" into double quotes, then rerun your app. Once the YANG module is in the temp repo, it will not be overwritten. Please save the file(s) from temp repo into some safe place for future reuse as YANG model repo.