Alcatel-Lucent 7210 SAS M - Figure 17: Failed Condition; Figure 18: Failed Condition - Switching at a

MPLS Transport Profile (MPLS-TP)
Page 46 7210 SAS M, T, X, R6, Mxp MPLS Configura-
tion Guide
Figure 17: Failed Condition
In normal condition, user data packets are sent on the working path on both directions, from A to Z
and Z to A.
A defect in the direction of transmission from node Z to node A impacts the working connection
Z-to-A, and initiates the detection of a defect at the node A.
Figure 18: Failed Condition - Switching at A