Port Gi1/0/x was blocked
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I have SG2210P v5.20 switch and 3 Ports keeps on blocking. Anybody who could help me fix my network problem?
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Hi @Ric04jan72
Thanks for posting in our business forum.
Like Tedd wrote, it is an issue with the loop. When the switch detects the loop, it'll auto-trigger the STP and block this port. And subsequently generates this log.
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I appreciate your help. My problem had been fixed.
I replaced all the network cables passing thru the ceiling going to my APs. It maybe bitten by rats.
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First, fix your loop and it fixes your block.
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Hi @Ric04jan72
Thanks for posting in our business forum.
Like Tedd wrote, it is an issue with the loop. When the switch detects the loop, it'll auto-trigger the STP and block this port. And subsequently generates this log.
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Hi @Ric04jan72
Thanks for posting in our business forum.
Like Tedd wrote, it is an issue with the loop. When the switch detects the loop, it'll auto-trigger the STP and block this port. And subsequently generates this log.
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I don't understand why a loop occurs in network
I have only 3 switches and only use 1 LAN Cable each switch for the uplink. Switch 2 & 3 uplink to Switch 1
Switch 1 - TP-Link SG2210P
Switch 2 - TP Link SG1024
Swtich 3 - CISCO SG95-24
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Hi @Ric04jan72
Thanks for posting in our business forum.
Ric04jan72 wrote
I don't understand why a loop occurs in network
I have only 3 switches and only use 1 LAN Cable each switch for the uplink. Switch 2 & 3 uplink to Switch 1
Switch 1 - TP-Link SG2210P
Switch 2 - TP Link SG1024
Swtich 3 - CISCO SG95-24
APs are Omada EAP? Any mesh?
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Hi @Ric04jan72
Thanks for posting in our business forum.
Ric04jan72 wrote
If there is no mesh, I can rule out that possible cause for EAP mesh which may trigger the STP. So, still the loop on the physical level. Run the cables one by one and find them where they end.
If you don't believe this, you can turn off STP/RSTP on the Omada switches and see if your network shuts down or not due to the network storm. If it gradually stops, and everything does not work, then it is the loop.
Update: hold on a sec. You say you don't have mesh, but why you have EAP isolated?? Isn't that mesh? Only mesh AP would generate that log.
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Hi @Clive_A
Here is my latest log today, I observed that once a port is block, all APs connected to that port will be isolated.
Port 8 is the uplink of my 2nd switch where the 2 APs where connected.
Isolated APs from my previous Pictures where already removed physically from my switch to isolate the problem.
I myself where the one who made the wirings, so I know where the wire ends.
Already turned off the STP few days ago. Will try to off the RSTP today.
If I changed my omada switch to unmanaged gigabit switch, will it fix my problem?
Once again, thank you for your help.
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I appreciate your help. My problem had been fixed.
I replaced all the network cables passing thru the ceiling going to my APs. It maybe bitten by rats.
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