Network Reliability

Measure of how much data is lost by the network during the journey

Two categories

• Dropping - discarded by the network

  • The more common one (loss can be up to 50% packet at peak time)

  • when the queues of the router are full

• Corruption - content of data packets is changed

  • 1/1010, higher on wireless network

  • Use of Checksum or even error correcting codes

Reliability can vary widely

When reliability needed, send acknowledgement