Here getting empty result for reply. Can you anybody help here what will be the reason. Suspecting session not getting created towards confd.
Is there any way can we check is there any limit for confd sessions?
You can configure a session limit using /confdConfig/sessionLimits in your confd.confd; and if you did and the problem is due to that, you should see a log message in this regard in your logs, certainly the audit log should create something along the lines of “could not create new session”.
If you did not configure the limit, then there is none effectively and the problem lies elsewhere. Inspect your logs (audit log, devel log - with developerLogLevel set to trace).
Another possibility is that there is something wrong with the client; I suggest you discuss that with the client maintainers. (It appears to be JNC, but the “original” JNC would not behave like that, is it a fork?)
Your configuration should be fine - “unbounded” simply means that ConfD does not limit the number of connections. Have a look at your netconf log and possibly netconf trace if you can see anything wrong. The newSession() call should appear as “new ssh session for …” in netconf log and as the hello-message exchange in netconf trace.