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What could cause TCP Re-transmission?

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TitleWhat could cause TCP Re-transmission?
Question
What could cause TCP Re-transmission?
Environment
  • Summit All
  • Black Diamond All
  • EXOS All
Answer

Most applications like copy programs use TCP to ensure the data transfer. The sender should get an acknowledgement from the receiver to acknowledges sent data. If a packet is lost for any reason TCP re-transmit it.

Packets get lost for any number of reasons. Some possibly reason:

  • Physical problem (cable, SPF module)
  • Duplex mismatch between the devices
  • Speed mismatch
  • Misconfigured QoS
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