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[faast]

Have four DGS-1210-28 forming a RING.
Prior to adding the 4th switch, RSTP was configured and working fine, detecting the loop, blocking the port etc.
Since the time we have added the 4th switch although all the switches are configured exactly the same(Except the bridge priority) the switches are just not able to establish stable network and the whole network comes down due to the switching loop.

Tried setting the bridge priority as apart as possible, didn't help.

Tried switching the entire thing on STP, didn't help

I had to cut the loop to avoid the loop but this has put us under great pressure of monitoring everything closely all the time.

Out of the 4 switches, one switch though keeps electing itself and the actual root bridge alternatively every few minutes randomly.

Can anyone help?

[FurryNutz]

Any status on this?