Hundreds of Unknown Mac Address devices appear on LAN client list

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Hundreds of Unknown Mac Address devices appear on LAN client list

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Hundreds of Unknown Mac Address devices appear on LAN client list
Hundreds of Unknown Mac Address devices appear on LAN client list
2022-07-01 02:25:26 - last edited 2022-08-23 03:25:24
Tags: #Unknown Mac Address
Model: OC200  
Hardware Version: V1
Firmware Version: 1.15.2 Build 20220323 Rel.60717

Omada Controller, OC200 V1

Firmware Version: 1.15.2 Build 20220323 Rel.60717

 

Router TL-ER7206 v1.0

Firmware Version: 1.2.1

 

L2 Switch TL-SG3428X v1.0

Firmware Version: 1.0.3

 

Recently I've noticed hundreds of unknown MAC addresses without IP address listed as connected devices in my clients list, some are on the same port which only one wired device connected. If I disconnected that device and rebooted the network system, it will appears on the other port with connected device.

 

Could it be virus or malware? 

Anyone have the same problem please share your solutions, thanks in advance!

 

 

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#1
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Re:Hundreds of Unknown Mac Address devices appear on LAN client list-Solution
2022-07-04 05:41:09 - last edited 2022-08-23 03:25:24

Dear @Jackie.L,

 

Jackie.L wrote

Recently I've noticed hundreds of unknown MAC addresses without IP address listed as connected devices in my clients list, some are on the same port which only one wired device connected. If I disconnected that device and rebooted the network system, it will appears on the other port with connected device.

 

Perhaps you could try using the CLI to show mac address-table to have a check.

>> Omada EAP Firmware Trial Available Here << *Try filtering posts on each forum by Label of [Early Access]*
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Re:Hundreds of Unknown Mac Address devices appear on LAN client list
2022-07-01 22:48:47 - last edited 2022-10-13 11:13:31

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#2
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Re:Hundreds of Unknown Mac Address devices appear on LAN client list-Solution
2022-07-04 05:41:09 - last edited 2022-08-23 03:25:24

Dear @Jackie.L,

 

Jackie.L wrote

Recently I've noticed hundreds of unknown MAC addresses without IP address listed as connected devices in my clients list, some are on the same port which only one wired device connected. If I disconnected that device and rebooted the network system, it will appears on the other port with connected device.

 

Perhaps you could try using the CLI to show mac address-table to have a check.

>> Omada EAP Firmware Trial Available Here << *Try filtering posts on each forum by Label of [Early Access]*
Recommended Solution
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Re:Hundreds of Unknown Mac Address devices appear on LAN client list
2022-09-05 03:15:13
Appreciated for the reply, found out that the USB C RJ45 Hubs was causing this problem. It is back to normal after removed it.
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Unknown Mac Address
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