ATM VCs

• Advantages of ATM VC approach:

  • QoS performance guarantee for connection mapped to VC (bandwidth, delay, delay jitter)

• Drawbacks of ATM VC approach:

  • Inefficient support of datagram traffic
  • one PVC between each source/dest pair) does not scale (N*2 connections needed)
  • SVC introduces call setup latency, processing overhead for short lived connections

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