may also interpret remote alarms indications created by itself actually the root node a 1 is able to make decisions itself without utilizing the bypass via the remaining two u201c dumb u201d nodes b 1 b 2 of the dh configuration traffic via such a dh configuration is shown as data streams 29 and 29 the a 1 node decides which of them should be used based just on fault indications and control messages created at its ports similarly to the above described cases a faulty physical port causes signal failure states sf 1 or sf 2 other physical or oam triggers can be used the proposed protocol still works though the case of fig3 may be not typical fig4 comprise comments about possible reasons of some combinations of the control messages fig4 a 4 i illustrate various locations of faults in a fully redundant dh which are interpreted by the deployed loop protocol in this example by g 8032 in the following way fig4 a 4 d show failures which according to the deployed protocol and similarly to the conventional g 8032 do not result in any changes in the fully redundant dual homing configuration the responsibility is not transferred from node a 1 to node a 2 the data traffic is kept via the non blocked data transmission path a 2 b 2 and the initially blocked data transmission path a 1 b 1 remains blocked fig4 e u2014 according to the conventional g 8032 upon the indicated failure in link a.