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Omada 5.15.20.17 displays ....went offline from network... for online clients

Omada 5.15.20.17 displays ....went offline from network... for online clients

Omada 5.15.20.17 displays ....went offline from network... for online clients
Omada 5.15.20.17 displays ....went offline from network... for online clients
2025-06-01 15:45:32
Model: Omada Software Controller (Windows)  
Hardware Version:
Firmware Version: 5.15.20.17

We use Omada SDN solution on Windows 2022 server. After that last updates we see these email notifications:

 

CLIENT    	INFO        	[client:A8-B8-E0-07-81-EB:A8-B8-E0-07-81-EB] went offline from network "Default" on ......
went offline from network "LAN-PROD" and so on

Interesting, also for connected clients which are always online, we see those ....went offline from network xxxxxx.

 

Why we see these emails notifications for clients which are always online? Also we have tried to disable those notifications (client connects and client disconnect), but it doesn't matter, we still do get those emails notifications. Bug in Omada?

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3 Reply
Re:Omada 5.15.20.17 displays ....went offline from network... for online clients
2025-06-03 08:55:21

Hi  @MrEnergy 

 

To better understand the issue, could you provide a specific example to elaborate?

 

For example, please list a full log (mask the MAC address), telling us which network is the client connected to, wired or wireless, and what's the two related networks are, etc.

 

Will all clients have this log? Or only occurs on certain clients?

Wish you a happy life and smooth network usage!  >Get the Latest Omada SDN Controller Releases Here< >Experience the Latest Omada EAP Firmware<
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#2
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Re:Omada 5.15.20.17 displays ....went offline from network... for online clients
2025-06-03 09:51:15 - last edited 2025-06-03 09:52:38

  @MrEnergy 
These below logs (a little example) are flooding our Mail servers, therefore we switched the Omada Mailservice off, for the time being. Espacially those mentioned clients in the below logs are always online clients  and never went offline. It doesn't matter on which VLAN the clients are, or how there are connected (Copper, fiber etc).
 

###################################################################################################
#                        xxxxxx Log - 2025-05-26
# Time: 2025-05-26
# Controller version: 5.15.20.17
# Controller Name: xxxxx
# Site: xxx
###################################################################################################

2025-05-26 21:00:49    	CLIENT    	INFO        	[client:xxxxx:xxx] went offline from network "LAN-PROD" on [switch:xxxxxxx:xxxxxxx](connected time:6h37m connected, traffic: 0Bytes).

2025-05-26 21:00:49    	CLIENT    	INFO        	[client:xxxx:xxxxx] went offline from network "LAN-PROD" on [switch:xxxxx:xxxxxxxx](connected time:123h22m connected, traffic: 2651.52MB).

2025-05-26 21:00:49    	CLIENT    	INFO        	[client:xxxxxxxx:xxxxxxx] went offline from network "LAN-DMZ" on [switch:SG3428XPP-1:xxxxxxxxxx](connected time:123h22m connected, traffic: 0Bytes).

2025-05-26 21:00:49    	CLIENT    	INFO        	[client:xxxxxxxx:xxxxxx] went offline from network "LAN-PROD" on [switch:xxxxxx:xxxx](connected time:123h22m connected, traffic: 0Bytes).
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#3
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Re:Omada 5.15.20.17 displays ....went offline from network... for online clients
2025-06-06 06:30:18

  @MrEnergy 

 

Thank you so much for taking the time to post the issue on TP-Link community!
To better assist you, I've created a support ticket via your registered email address, and escalated it to our support engineer to look into the issue. The ticket ID is TKID250610790, please check your email box and ensure the support email is well received. Thanks!
Once the issue is addressed or resolved, welcome to update this topic thread with your solution to help others who may encounter the same issue as you did.
Many thanks for your great cooperation and patience!

Wish you a happy life and smooth network usage!  >Get the Latest Omada SDN Controller Releases Here< >Experience the Latest Omada EAP Firmware<
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