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VLAN set-up, flooding ports.

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VLAN set-up, flooding ports.

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VLAN set-up, flooding ports.
VLAN set-up, flooding ports.
2025-05-22 09:33:01 - last edited 2025-06-05 01:41:40
Tags: #Configuration
Model: TL-SG3452X  
Hardware Version: V1
Firmware Version:

Hi. I’m a new user of SG3452X.
Hardware Version: SG3452X 1.20
Firmware Version: 1.20.9 Build 20250422 Rel.77329
The switch is working in standalone mode (without Omada and as a single in the local network).

 I have created 4 groups/VLANs. All computers have the same network 192.168.1.0/24
For example:

 

 

 

 when I copy data from NAS to X, ALL ports are flooded.
When I change the PVID for port X to PVID->NAS (50 ) everything is fine.
Data is transferred ONLY between the two ports.

What am I doing wrong?

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#1
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2 Accepted Solutions
Re:VLAN set-up, flooding ports.-Solution
2025-05-23 07:31:10 - last edited 2025-06-05 01:42:01

  @Sonchus 

 

Dont set all ports on the first two vlans as untagged, this can create strange situations.

 

Only set a port untagged on a specific vlan when a specific client or device, directly on the part needs to be on that vlan.  Everything else should be tagged.

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#4
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Re:VLAN set-up, flooding ports.-Solution
2025-06-04 10:39:51 - last edited 2025-06-05 01:41:40

Thanks for guidelines. Anyway I decided to resign of usage vlans. Instead of them I restricted communications between ports using "Port Isolation". Thanks again…:)

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#5
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4 Reply
Re:VLAN set-up, flooding ports.
2025-05-22 09:57:08

  @Sonchus 

 

Can we see your VLAN setup pages specifically what you are tagging and untagging per port

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#2
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Re:VLAN set-up, flooding ports.
2025-05-22 10:59:14

  @GRL 

So, once again in another configuration:

 

 

 

 

 

 

AND port 42 -> PVID 100

 

So when I copy data from port 50 to 52, port 42 also gets flooded.
When I change the PVID for port 52 to 60 everything is fine.
The data is only transferred between the two ports.

 

 

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#3
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Re:VLAN set-up, flooding ports.-Solution
2025-05-23 07:31:10 - last edited 2025-06-05 01:42:01

  @Sonchus 

 

Dont set all ports on the first two vlans as untagged, this can create strange situations.

 

Only set a port untagged on a specific vlan when a specific client or device, directly on the part needs to be on that vlan.  Everything else should be tagged.

Recommended Solution
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  0  
#4
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Re:VLAN set-up, flooding ports.-Solution
2025-06-04 10:39:51 - last edited 2025-06-05 01:41:40

Thanks for guidelines. Anyway I decided to resign of usage vlans. Instead of them I restricted communications between ports using "Port Isolation". Thanks again…:)

Recommended Solution
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#5
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