Hi Koyel
Thank for the update. For this case the netscaler have down and we have reboot first on 6.00-7.00 AM. at 21/7/2015. And we have rejoin cluster on 4.00-5.00 PM. At 21/7/2015.
Which the yesterday we found the netscaler have state down-up on blackplane which me try the reboot on the netscaler and that come normally.
Please kindly see log since 6.00 AM. On 21/7/2015 and we will upload tech-support lasted for the problem in yesterday