Packets Flow

Packets flow from level agent (AGT) source node to other AGT sink node :

Source ——————————–  Node Sink Node
1. sent packet at level AGT                          —
2. receive packet at RTR                               —
3. sent packet at RTR                                   —
4. sent packet at MAC  to sink node            —
5.  —-                                                      sent ACk at MAC to source node
6. receive ACK at MAC from sink node        —
7. —                                                        receive packet at MAC
8. —                                                        receive packet at AGT

Example : source Node[3] sent cbr packet to sink Node[0]

s 20.200000000 _3_ AGT  — 1 cbr 70 [0 0 0 0]
r 20.200000000 _3_ RTR  — 1 cbr 70 [0 0 0 0]

s 22.056889033 _3_ RTR  — 1 cbr 90 [0 0 0 0]

s 22.078592033 _3_ MAC  — 1 cbr 97 [0 0 3 800]

s 22.082112000 _0_ MAC  — 1 ACK 5 [0 3 0 0]

r 22.082464033 _3_ MAC  — 1 ACK 5 [0 3 0 0]
r 22.083104000 _0_ MAC  — 1 cbr 90 [0 0 3 800]
r 22.083129000 _0_ AGT  — 1 cbr 90 [0 0 3 800]

Source : NS2 Trace File Analysis

NS2 Nature Manipulation

November 15, 2008
Taipei City
High Speed Network Lab

Udin Harun

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