The first rep xfinity sends out is usually only rated to check the connection from the hub to the home. It doesn’t always fix the issue and sometimes they have to bump it up. 

do you have a copy of the cable connections page and event logs? (screensnip them please)

Not sure what cable connections page is. Is that something from xfinity?

Also, curious what’s the issue that you’re referring to?

Issue= the problem you’re having

Cable connections page shows your cable modem data with upstream/downstream values that show the current connections (not past). Which is why that info plus the event logs helps as that shows longer term

How would I access this “Cable connections page”? from Xfinity?

here’s the guide for it. 

https://arris.my.salesforce-sites.com/consumers/articles/General_FAQs/G34-G36-Cable-Signal-Levels

Could you please specify whether the intermittent connection is happening on the Wi-Fi or the wired connection? 

When the internet connection drops, does the gateway (G36) reboots on its own?

I am having similar issue since past 1 week and using G36. Can someone help to fix?

its working for sometime once I restart modem and issue starts showing again

​@vaibhav.rupapara Pleases start your own thread/post so your info isn’t confused with the OP’s information. Your line looks like it has issues but you’ve only shown part of the data.