Path message: additional information:
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Sender Template
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Sender Template describes the format of data packets that the sender will originate. This template is in the form of a filter spec that could be used to select this sender's packets from others in the same session on the same link.
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at present, only the sender IP address and optionally the UDP/TCP sender port can be specified
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Sender Tspec
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(Required) Sender Tspec which defines the traffic characteristics of the data stream that the sender will generate. Tspec is used by traffic control to prevent over-reservation or unnecessary Admission Control failure on upstream links.
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