UC Transport Service Type's Basic Characteristics

UC is a subset of the RC protocol. The responder's RQ Logic doesn't Ack or Nak each request packet it receives.

  • Disadvantage: The requester has no verification that each request packet has been received by the remote QP's RQ Logic.

  • Advantages:

    - This protocol generates considerably less network traffic than RC.

    - From the sender's perspective, the message transfer completes quickly (because it doesn't have to wait for the transfer to be acknoweldged).

The basic characteristics of the UC service type are:

  • Connection needed. Just like the RC protocol, before any messages may be transferred, a connection must be established between the UC QPs in the two adapters, and the QP Contexts of the two QPs ...

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