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Multihomed Communication with SCTP (Stream Control Transmission Protocol)
book

Multihomed Communication with SCTP (Stream Control Transmission Protocol)

by Victor C.M. Leung, Eduardo Parente Ribeiro, Alan Wagner, Janardhan Iyengar
December 2012
Intermediate to advanced content levelIntermediate to advanced
241 pages
7h 14m
English
CRC Press
Content preview from Multihomed Communication with SCTP (Stream Control Transmission Protocol)
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“K16304” 2012/11/19 9:15
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4.2 Retransmission Policies
109
Timeout on dest B
2
-TSN X is rtxd
-TSNsY+2 & Y+3
incorrectly marked
for rtx !
TSN Y+2
B
1
A
1
A
2
B
2
Sender
A
Receiver
B
Receiver
B
SACK X
-
1 (X+1 to Y)
SACK X
-
1 (X+1 to Y+1)
TSN Y+3
TSN X (rtx
)
Incoming
SACKs
SACKs
that will
free up cwnd space
for destination B
1
SACKs
TSN Y+2
TSN Y+3
Spurious
rtxs
!!
LEGEND:
-
SACK X-1 (X+1 to Y) indicates a SACK with a cumack of X-1 carrying gap acks for TSNs from X+1
through Y. This SACK indicates that TSN X has not been received.
-
TSN Y+2 indicates a packet containing one data chunk with TSN Y+2. A data chunk is the smallest
indivisible unit of data in an SCTP packet.
Figure ...
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Publisher Resources

ISBN: 9781466566996