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| n |
The
sender’s Retransmission Timeout (RTO) is a
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function
of measured RTT (round-trip times)
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– |
Link
level retransmits increase RTT, therefore,
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RTO
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| n |
If
errors not frequent, RTO will not
account for
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RTT
variations due to link level retransmissions
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– |
When
errors occur, the sender may timeout &
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retransmit
before link level retransmission is successful
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– |
Sender
and link layer both
retransmit
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Duplicate
retransmissions (interference) waste wireless
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bandwidth
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– |
Timeouts
also result in reduced congestion window
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