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while searching this forum I found several similar questions, but no real answers, so I am trying my luck as well.
I am using a GC728X with firmware 1.0.5.25, B1.0.0.4. When enabling RSTP and there is a loop detected, one port goes into state D-Disabled. I can manually reset the port when the loop breaks up. But is there also a way to automatically enable the port when the loop disappeared?
There is diferent between RSTP and L2 Loop Protection, this is two different feature.
RSTP is used in scenario that all switches support spanning-tree in the network, L2 Loop Protection is used for connect one non-support spanning-tree device(like: Hub).
For RSTP: it will not D-disable port when detect there is loop in the topology, only change port status to Discard, and will recover automatically if the Loop is broken.
For L2 Loop Protection: it will D-disable port when detect there is loop in the topology, and if you want to Recover it automatically, you can set the 'Recovery Timer' to a specific value(by default: it's 0, mean not recover automatic).
And on GC728X switch, it will eanble RSTP and disable L2 Loop Protection feature by default. We don't suggest eanble these two protocol meanwhile, as it's conflict.
So please check the configuration of 'Switching->STP' page and 'Switching-L2 Loop Protection' page on your switch, suggest enable RSTP and disable L2 Loop Protection.
There is diferent between RSTP and L2 Loop Protection, this is two different feature.
RSTP is used in scenario that all switches support spanning-tree in the network, L2 Loop Protection is used for connect one non-support spanning-tree device(like: Hub).
For RSTP: it will not D-disable port when detect there is loop in the topology, only change port status to Discard, and will recover automatically if the Loop is broken.
For L2 Loop Protection: it will D-disable port when detect there is loop in the topology, and if you want to Recover it automatically, you can set the 'Recovery Timer' to a specific value(by default: it's 0, mean not recover automatic).
And on GC728X switch, it will eanble RSTP and disable L2 Loop Protection feature by default. We don't suggest eanble these two protocol meanwhile, as it's conflict.
So please check the configuration of 'Switching->STP' page and 'Switching-L2 Loop Protection' page on your switch, suggest enable RSTP and disable L2 Loop Protection.
