14 L G Local events 8 41 57 43 H 44 38 34 Higher-layer triggered events 52 39 31 56 54 42 44 M 36 33 49 30 Message processing 53 40 56 42 I 44 36 33 22 51 22 30 14 receiving message #1 ( 33, 36, 40, 42, 42, 44, abstract data model ( 28, 34) 51, 53, 54, 56) 37 receiving message #2 ( 33, 36, 40, 44, 51, 56) 37 receiving message #3 ( 40, 57) 36 40 35 receiving message #5 ( 40, 51) 38 receiving message #6 ( 41, 52) 36 receiving other messages ( 33, 36) 34 53 36 Messages 36 22 36 26 36 26 37 22 35 21 21 20 21 20 IKE MM SA negotiation ( 33, 36, 39, 42, 44) 25 16 23 70 27 50 20 70 20 12 Initialization N 39 42 56 42 NAT traversal 43 abstract data model ( 28, 32) 35 33 49 32 29 34 53 33 43 overview ( 13, 31) 32 20 8 33
14 G 8 H Higher-layer triggered events 39 56 42 44 36 33 49 30 53 I 22 22 14 abstract data model ( 28, 34) 37 37 36 35 38 36 34 36 36 36 36 37 35 21 21 IKE MM SA negotiation ( 33, 36, 39, 42, 44) 16 70 50 70 12 Initialization 39 42 56 42 43 35 49 29 53 43 32 8 L Local events 41 57 43 44 38 34 52 31 54 M Message processing 40 56 42 44 36 33 51 30 receiving message #1 ( 33, 36, 40, 42, 42, 44, 51, 53, 54, 56) receiving message #2 ( 33, 36, 40, 44, 51, 56) receiving message #3 ( 40, 57) 40 receiving message #5 ( 40, 51) receiving message #6 ( 41, 52) receiving other messages ( 33, 36) 53 Messages 22 26 26 22 21 20 20 25 23 27 20 20 N NAT traversal abstract data model ( 28, 32) 33 32 34 33 overview ( 13, 31) 20 33