No the proxy servers do not communicate about the session id creation to each other.
The session id generation is based on Java.Security.SecureRandom : SecureRandom.getInstance("SHA1PRNG");
Details about it are here:
https://docs.oracle.com/javase/7/docs/api/java/security/SecureRandom.html
© 2021 One Identity LLC. ALL RIGHTS RESERVED. Feedback Terms of Use Privacy