global traffic manager

Hi ,

we are working with 2 GTM's in a sync group . GTM's are running in v10.2.1. They are using different LTM units from where they receive VS.

This has worked for several years , but since a couple of days (maybe weeks) we are facing issues. Problem is that GTM doesn't seem to update the VS he recieves from the ltm units.When we add a virtual server on LTM , it doesn't appaer on GTM . Nevertheless we are using the autodiscover option (with no delete) .

When we test LTM from our GTM unit, all is OK . We are getting response on port 4353& when performing an iqdump of IP of LTM , we see traffic is passing .

Does anybody have a clue what prblem can be ? The strange thing in this behaviour is , that previously it worked .