[Mpls-interop] MPLS-TP OAM requirements - AIS/LockNotif - Can MIPs send "usolicited" OAM messages ?

[Martin Vigoureux <[e-mail]>]

All,

as part of the discussion on AIS/Lock Notification,
the server layer MEPs, detecting a fault/lock condition, should
inform (the MEPs of) the client layers relying on that
server layer and which are affected by the condition.

However as I understand it is not the MEP (sMEP) of the
server layer that sends a notification to the client layers
MEPs (cMEP) but the MIP (cMIP) of the client layer which
is hosted on the same node than the MEP (sMEP).
See the figure below (where the double dashed line is
an LSP, and the ~ line represents an LSP nested in the
other LSP.

+------+      +------+      +------+      +------+
|      |      |      |      | cMIP |~~~~~~| cMEP |
|      |------|      |------|  ^   |      |      |
|      |      |      |      |  |   |      |      |
|      |------|      |------|  |   |      |      |
|      |      |      |      | sMEP |      |      |
+------+      +------+      +------+      +------+

Therefore can MIPs send OAM messages without having priorly received one
or did I miss something?

regards,
-m