RSTP problem

[Jhonata]

Good afternoon, I am having a problem in a network. It is a ring topology and rstp is enable, but I had a broken link and rstp didnt't work well, I am losing connection to some devices because rstp is blocking the port, i am not sure what is the cause, fiber links are good, layer 1 is good. Port G1/1 is on Dispute and got block. 

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/1 Desg BLK 4 128.1 P2p Dispute
Gi1/2 Root FWD 4 128.2 P2p

This is the port configuration

interface GigabitEthernet1/1
description xxxxxx
switchport mode access
!
interface GigabitEthernet1/2
description xxxxxx
switchport mode access
!

there are like 5 switches that one Gig interface is lock, but the redundancy is not present, thanks for your help.

[MHM Cisco World]

it normal do 
show spanning-tree inconsistent ports
you will see that the port inconsistent because bridge assurance 
check below link 

https://www.linkedin.com/pulse/stp-dispute-bridge-assurance-priyanka-kumari

[Jhonata]

Thanks, It doesn';t show any inconsistent, the BLK state is intermittent 

[MHM Cisco World]

do you run UDLD for fiber ?

[Jhonata]

Yes