PR2100 connection weirdness after MacOS Mojave 10.14.6 update

My Cloud OS 3 Personal & Network Attached Storage My Cloud Pro Series
1

I have a 2 year old PR2100 installed on my home network with both Ethernet lines “bound” and connected to a managed switch. I also have Plex running on it. Operation has been flawless until I updated to Mojave 10.14.6 this week.
The My Cloud has a static IP of 10.0.1.13 - however I can no longer ping the device at this address. Nor can I open Dashboard using this IP with Safari or Chrome. However, I can get to the Dashboard log in screen using https://MyCloudPR2100.local but log in fails.
A variety of network utilities “see” the device on my network, it’s just that it seems to be unreachable. I can “see” in in Finder under Locations-Network but connection fails.
Weirdly, however, WD Sync continues to work normally. Also, I can reach the Plex server using https://plex.tv but not from 10.0.1.13:32400 as I used to.

And here’s where it really gets crazy: I have Windows 10 running in a Parallels Desktop VM. From Windows and Microsoft Edge, I can easily log into Dashboard using either the IP address or the MyCloudPR2100 alias. Also, the entire contents of the NAS can be seen, read from and written to in File Explorer.

And even crazier: my iPad is running the iPadOS beta 13 - and I can open up a Safari window and log into Dashboard from there! But I can’t on my iPhone running iOS 12.4.

The MyCloud apps on iPhone and iPad are working perfectly.

So I have multiple devices on the same network, one of which can “see” the NAS on the Windows VM but can’t on the MacOS side?!? But WD Sync on the MacOS side is still syncing perfectly with the device?

I’ve done the 4 Second Reset and it hasn’t made a difference. I’m reluctant to do the 40 Second Reset (yet) because I’m not sure there is anything wrong with the NAS box. It appears to be some network issue in MacOS on my iMac.

I’ve already rebooted the NAS several times, as well as the router (Airport Extreme) and the managed switch and the cable modem. I’ve also booted the iMac into Safe Mode, done the PRAM and SMC clearing and also flushed out my Safari and system caches on the iMac.

This is just a really baffling problem and I’m wondering if anyone else has encountered it, or if there are any settings on the Mac side I should be looking at? Thanks in advance for any advice. (I also have a ticket in to WD.)

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Hello ALANH220,

It seems that your Mac is limiting the device usage after the MacOS 10.14.6 update due to any operating system limitation. I would recommend you to contact Apple Support for the issue as I have not updated on MacOS 10.14.6 yet and my NAS is working fine which is configured with static IP.

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Thanks for the kind reply. I managed to sort out the problem, but it’s still mystery how it happened.

I should mention that my My Cloud PR2100 is connected with 2 Ethernet cables going to a Netgear managed switch and operating in Link Aggregation mode (LAG). This particular switch supports “static LAG” only. The NAS was originally set to Balance-XOR mode and was working well.

For reasons still unknown to me, the LAG setting in Dashboard somehow was set to Active Backup mode. I switched it to Round Robin and rebooted the NAS. Directly afterward I was able to get full access within the MacOS environment. I then switched it back to Balance-XOR mode and got the higher performance I was experiencing prior to this problem beginning.

Again, I have no idea how the LAG mode setting was changed in Dashboard - I rarely access it and have no need to go to the Network settings page - but after I set back to Balance-XOR and Round Robin the problem was resolved. And I never did have to contact Apple.