35.2.3 Sack TCP Sink

The selective-acknowledgment TCP sink (Agent/TCPSink/Sack1) implements SACK generation modeled after the description of SACK in RFC 2018. This object includes a bound variable maxSackBlocks_ which gives the maximum number of blocks of information in an ACK available for holding SACK information. The default value for this variable is 3, in accordance with the expected use of SACK with RTTM (see RFC 2018, section 3). Delayed and selective ACKs together are implemented by an object of type Agent/TCPSink/Sack1/DelAck.


Tom Henderson 2011-11-05