SSH Fails Intermittently On T4 Servers on Solaris 10, with error "big_modexp_ncp_yf() returned -5".

(Doc ID 1908064.1)

Last updated on OCTOBER 02, 2017

Applies to:

Solaris SPARC Operating System - Version 10 1/13 U11 and later
Information in this document applies to any platform.

Goal

SSH from T4 Server fails regularly with error "big_modexp_ncp_yf() returned -5".

Command used to test connectivity:
$ while true; do /usr/bin/ssh <target_system> "date"; sleep 2; done | tee ssh_test.out

This issue is suppose to be solved in 150531-01.
We found that about 0.25% of the ssh sessions are failing..
 

Solution

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