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SG300 RSTP

cadkins01111
Level 1
Level 1

I have three SG300 switches that are connect over Ubiquiti microwave links. I am trying to create a redundant layer 2 link to form a ring with the switches. The issue I am having is that the switches will only negotiate at STP and not RSTP. And when I connect the last part of the ring it will not go into blocking and will create a loop on the network. I want to use RSTP and not MSTP. I have try MSTP also and have no luck at getting it to work. Its like the BPDUs are not being seen. I have BPDU flooding turned on. 

1 Reply 1

Aleksandra Dargiel
Cisco Employee
Cisco Employee

Hello,

Did you manage to overcome the issue? I just came across this post and cannot figure out why it would not block the link. Did you have management interfaces in the same vlan?

Aleksandra

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