RSVP neighbor down with authentication failure when auth key is set to 16 char length

RSVP neighbor will be down as packets will be dropped as authentication failure when auth key is set to 16 char length.

If the authentication key is set to length less than 16 char length, then the session will come up.

labroot@jtac-mx2010-r2005-re0> show rsvp statistics 

 .....

 Rcv pkt bad version        0             0

 Rcv pkt auth fail        161             1   <<< Packet fails as bad authentication.

 Rcv pkt bad checksum        0             0

 Rcv pkt bad format         0             0

PR#1850130 will address the issue in affected releases.

Possible workaround is to set authentication key less than 16 char length.