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Forum Discussion
C6300 Frequent disconnects
Seems to be a common topic here, but don't think I've seen a definitive answer so gonna try again. Purchased a C6300 because it was (seemingly) the best modem / router out there supported by Comc...
Hi Sloy,
Welcome to the community!
We apologize for the frequent disconnect that you are having. When the disconnection happens, what LED lights are on from the C6300? How frequent is the disconnection in a day (every day, hour, 30mins. etc.)? You may want to try adjusting the MTU size on your unit. Check this link to get the proper MTU size on your unit. MTU can be adjusted by access the GUI of your C6300 under Advanced > WAN setup. By the way, what is the firmware loaded on your unit? Can you verify if you have the latest fw version from this page. Let us know the result.
Regards,
Holy cow, ElaineM - was out of town and didn't see your reponse a few days ago. Thank you SO much for trying to assist!
So, to answer your questions...
1. Not sure about LED lights since I don't sit within view of the Device.
2. The Micro-disconnects happen about every 10 - 15 minutes, but sometimes only once an hour, and sometimes once every five minutes. As I test, I opened cmd and did the following - ping -t 192.168.0.1 I ran this from my desktop hardwired to the device AND my laptop. When the micro-disconnects happen, on the Desktop there is no change - just repeated pings to the device. HOWEVER, on the desktop there are 4 ping attempts each time that are unsuccessful - "Request Timed Out" exactly 4 times each micro-disconnect. Always 4, so even though each disconnect is NOT on a fixed inverval, each is exactly the same amount of time.
Also, noticed something interesting that hadn't noticed before. Even though I answered the prompt to automatically log into my SSID, it never does anymore. I can see it, and select it, but it never auto connects to it. Curious.
Anyway, when home I will for sure check out the MTU size - very interesting.
Lastly, my firmware is v1.02.21, which, according to Comcast, IS the latest, greatest?
Thanks again for your help...
-S
OK, did the MTU test and that's definitely not the issue. Did the test you suggested and @1472, things were fine, at 1473, got packets need to be defragmented. So, 1472 it is, plus 28 that equals 1500. WHICH, as it turns out, is EXACTLY what was already in WAN Setup.
Given that nothing happens to the computer that is hard-wired to the C6300 and the micro-disconnects only affect devices connected WiFi - regardless if it's to the AP or to the Router, am I missing some WiFi setting?
Any OTHER suggestions?
-S