I have several wired devices that disconnect from the network frequently.  Using the Connection Alerts-->Known Device Alerts for both Online and Offline, I'll get an alert that a device is offline and then within seconds another alert that the device has joined the network.  For one or two devices, it may be minutes before the join message.  One of them can require user intervetion for it to rejoin, which is a huge hassle then.

With my prior router and the same toplology, this was never an issue.  The prior router had poor WiFI, which is why I replaced it wtih the X60 and the WiFi has been great.  But, dropped wired connections are driving me nuts.

Topology:

Main X60-->Netgear GS208 Switch One

Netgear GS208 Switch One-->Actiontec ECB6250S02 MoCA adapter-->Moca Devices

Netgear GS208 Switch One-->Netgear GS208 Switch Two-->Synology NAS and two Windows PC

Switch One and Two are in different rooms with a wire between them.

The MoCa infrastructure has 4 devices from TiVo on it.  One of them will disconnect and reconnect seconds apart, freqeuntly.  Anther one will disconnect and require user intervetion to reconnect after frequenct disconnects.   COAX infrastrure was replaced in case of a physical problem.  But, after powering off the X60 and back on, the device being disconnected switched to a diffent TiVo.  The one that doesn't require user action shows no signs that it disconnected and reconnected, just the Deco notification. The one that requires user action stops working until the action is taken, which is very disruptive.  It can happen multiple times in minutes while in use.

The Synology NAS will frequently disconnect and immediatley reconect.  Use of it doesn't appear to be impacted, just the notification.

One, but not the other, of the Windows PC on Switch Two will disconnect and requires user interaction to reconnect.

I have alerts set for both Windows PC, all the TiVo devices, and additional devices on Switch One.  So, there's devices with the same connection in the same spot that do not generate alerts at the same time others do.

Any suggestions on what to look for?  I cannot think of any reason for any of the wired devices to disconnect.  Espeically while they are in use.