+-------------------------------+
|                               |
|             LSP               |
|            Label              |
+-------------------------------+
|                               |
|        Synonymous Flow        |
|            Label              |
+-------------------------------+
|                               |
|            GAL                |
|                               |
+-------------------------------+
|                               |
|      ACH Type = 0xA           |
|                               |
+-------------------------------+
|                               |
|      Measurement Message      |
|                               |
|  +-------------------------+  |
|  |                         |  |
|  |      Fixed-format       |  |
|  |      portion of msg     |  |
|  |                         |  |
|  +-------------------------+  |
|  |                         |  |
|  |      Optional SFL TLV   |  |
|  |                         |  |
|  +-------------------------+  |
|  |                         |  |
|  |      Optional Return    |  |
|  |      Information        |  |
|  |                         |  |
|  +-------------------------+  |
|                               |
+-------------------------------+