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Final Project-Routing. 698430033 張宜鴦. 3 type routing policy. Static Routing Session Routing Dynamic Routing. 利用記錄檔寫程式分析 throughput 、 packet delay 、 jitter 、 packet loss rate ，並比較三種 routing policy 的值. Want to do. Scenario. At 0.1s 0->4 At 0.3s 1->4 At 0.5s 0->4 down At 0.9s 0->1 down
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Final Project-Routing 698430033 張宜鴦
3 type routing policy • Static Routing • Session Routing • Dynamic Routing
利用記錄檔寫程式分析throughput、packet delay、jitter、packet loss rate，並比較三種routing policy的值 Want to do
Scenario • At 0.1s 0->4 • At 0.3s 1->4 • At 0.5s 0->4 down • At 0.9s 0->1 down • At 1s 0->4 up
Awk程式(End-to-End delay) • 記錄封包的傳送時間->記錄flow_id的接收時間-> 當資料列全部讀取完後，開始計算有效封包的點到端點延遲時間 • start = start_time[packet_id]; • end = end_time[packet_id]; • packet_duration = end - start
Awk程式(jitter) • Packet_duration的部份與 End-to-end delay相同 • ->只把接收時間大於傳送時間的記錄列出來 得到了delay值(packet_duration)後計算jitter seqno_diff = pkt_seqno[packet_id] - last_seqno; delay_diff = packet_duration - last_delay; if (seqno_diff == 0) { jitter =0; } else { jitter = delay_diff/seqno_diff; }
Awk程式(throughput) • if(action=="r" && to==4 && flow_id==0) { pkt_byte_sum[i+1]=pkt_byte_sum[i]+ pktsize; … … . . .} th = pkt_byte_sum[j] / (end_time[j]-start_time)*8/1000; printf("%.2f\t%.2f\n", end_time[j], th);
