Export of      Export of      Export of     Export of
         IOAM data      IOAM data      IOAM data     IOAM data
         (optional)     (optional)     (optional)     (optional)
             ^              ^              ^              ^
             |              |              |              |
             |              |              |              |
User     +---+----+     +---+----+     +---+----+     +---+----+
packets  |Encapsu-|     | Transit|     | Transit|     |Decapsu-|
-------->|lating  |====>| Node   |====>| Node   |====>|lating  |-->
         |Node    |     | A      |     | B      |     |Node    |
         +--------+     +--------+     +--------+     +--------+