Link Model Verification

• Delay:
  • Expected values
  • Consider queuing delay
• Bit rate
  • Upper Limit

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Goal: check simulator‘s propper functioning (not correctness of formulas) Delay:
Scenario:

endlesly transmitting small packets

link not saturated
==> no waiting in link-queue

==> only time to enqueue and dequeue
==> expected values if queuing delay is considered

Bit Rate:
saturate link:

data rate: 64 MB/s

2000-byte-long packets

4096 packets per second
stop sending packets after 10s
2 MB/s link bandwidth (= 128 packets per second)

==> link queue should be flushed after 5 minutes
Probing Stations were „cross-checked“ to verify transmission rates