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Forum Discussion
Solved
Loop detection and prevention
Hello, Netgear Community. This weekend I have not time to relax and enjoy my beer. Instead I was spent time in Server room with my lovely "roommates" 2x S3300 and 4x GS752TP. I spent few long...
Hi,
Sorry about the beer :)
Just turning on RSTP on its own is likely not hepling because the phone does not support spanning tree. That is pretty common that phones don't. When the switch ports (those the phone is connected to) are in "main STP mode" the spanning tree negotiation can't happen as the phone does not understand/support that. Main STP mode should be used between devices that understand and support spanning tree.
Leave RSTP enabled overall and can you then also please try to enable "Egde Mode" on those ports where the phone is connected? Go to: "STP" --> "CST Port Configuration"
Does that prevent the loop now?
Cheers
Hi,
Sorry about the beer :)
Just turning on RSTP on its own is likely not hepling because the phone does not support spanning tree. That is pretty common that phones don't. When the switch ports (those the phone is connected to) are in "main STP mode" the spanning tree negotiation can't happen as the phone does not understand/support that. Main STP mode should be used between devices that understand and support spanning tree.
Leave RSTP enabled overall and can you then also please try to enable "Egde Mode" on those ports where the phone is connected? Go to: "STP" --> "CST Port Configuration"
Does that prevent the loop now?
Cheers
Hi Hopchen,
Thanks for your answer.
I forgot to mention, that Eth port and PC port have different vlan. Thats why broadcast storm is performing.
Since, S3300 is working on production, so I cannot apply any changes without testing at the lab, so I took GS752TP and simulate my production network, I activated RSTP (that was enabled before on my S3300) and also I enabled "Fast link" (that was not configured before). After test - nothing changes.... few seconds and all ports are begining to receive 7-8Mbps of traffic.
Anyway, at S3300 is little bit different firmware, and it gives me possibily to active one more option - Auto Edge. Is that function, that you advice my to configure?
P.S. At GS752TP there is no Auto Edge option.
Proofs:
GS752TP
S3300
But on GS752TP there is Edge Port status.
Proof:
Have can I try to enable it on GS752TP?
Thanks a lot.
Igor
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