BE 98 Pro 3006.102.5 Upgrade LAN Port Issue

[Traveler2100]

When I upgraded to 3006.102.5 my router's 2.5G LAN ports quit communicating with one another. I have two 2.5G and two 10G ports active. Each 2.5G port could communicate with the 10G ports but could not talk to each other. One 2.5 port has 3 aimesh and 9 cameras on it and a NAS on the other. I connected a different machine in place of the NAS with no luck. I restarted everything and still the NAS could not be reached or pinged from the mesh nodes and could no longer see or ping the cameras (I run a camera app in a KVM). Finally I downgraded to 3006.102.4 and everything is working fine. No other changes on any of the machines or setup.

 

[Dr.Cheeks]

Could be this same issue I mention in this post: https://www.snbforums.com/threads/asuswrt-merlin-3006-102-5-is-now-available.95358/post-965768
(And the post I'm referring here...)

What router model do you have?

 

[emwgee]

I had similar issue if any one of the guest or IoT networks set to AP isolation. Disabled AP isolation in the VLAN(s) and the problem is solved, at least in my case.

 

[Dr.Cheeks]

I had similar issue if any one of the guest or IoT networks set to AP isolation. Disabled AP isolation in the VLAN(s) and the problem is solved, at least in my case.

Hmm, interesting. Thanks for the response!
(I want my Guest Network to apply AP Isolation, so I'll stay on my reverted 3006.102.4 until a future firmware release doesn't force this 'isolation' onto the LAN ports.)