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TCP statistics
Command: /stats/l3/tcp
TCP statistics:
tcpRtoAlgorithm: 4 tcpRtoMin: 0
tcpRtoMax: 240000 tcpMaxConn: 512
tcpActiveOpens: 252214 tcpPassiveOpens: 7
tcpAttemptFails: 528 tcpEstabResets: 4
tcpInSegs: 756401 tcpOutSegs: 756655
tcpRetransSegs: 0 tcpInErrs: 0
tcpCurBuff: 0 tcpCurConn: 3
tcpOutRsts: 417
The following table describes the Transmission Control Protocol (TCP) statistics:
Table 63 TCP statistics
Statistics Description
tcpRtoAlgorithm The algorithm used to determine the timeout value used for retransmitting
unacknowledged octets.
tcpRtoMin The minimum value permitted by a TCP implementation for the retransmission timeout,
measured in milliseconds. More refined semantics for objects of this type depend upon
the algorithm used to determine the retransmission timeout. In particular, when the
timeout algorithm is rsre(3), an object of this type has the semantics of the LBOUND
quantity described in Request For Comments (RFC) 793.
tcpRtoMax The maximum value permitted by a TCP implementation for the retransmission timeout,
measured in milliseconds. More refined semantics for objects of this type depend upon
the algorithm used to determine the retransmission timeout. In particular, when the
timeout algorithm is rsre(3), an object of this type has the semantics of the UBOUND
quantity described in RFC 793.
tcpMaxConn The limit on the total number of TCP connections the GbE2 Interconnect Switch can
support. In entities where the maximum number of connections is dynamic, this object
should contain the value -1.
tcpActiveOpens The number of times TCP connections have made a direct transition to the SYN-SENT
state from the CLOSED state.
tcpPassiveOpens The number of times TCP connections have made a direct transition to the SYN-RCVD
state from the LISTEN state.
tcpAttemptFails The number of times TCP connections have made a direct transition to the CLOSED state
from either the SYN-SENT state or the SYN-RCVD state, plus the number of times TCP
connections have made a direct transition to the LISTEN state from the SYN-RCVD state.
tcpEstabResets The number of times TCP connections have made a direct transition to the CLOSED state
from either the ESTABLISHED state or the CLOSE- WAIT state.
tcpInSegs The total number of segments received, including those received in error. This count
includes segments received on currently established connections.
tcpOutSegs The total number of segments sent, including those on current connections but excluding
those containing only retransmitted octets.
tcpRetransSegs The total number of segments retransmitted, that is, the number of TCP segments
transmitted containing one or more previously transmitted octets.
tcpInErrs The total number of segments received in error (for example, bad TCP checksums).
tcpCurBuff The total number of outstanding memory allocations from heap by TCP protocol stack.
tcpCurConn The total number of outstanding TCP sessions that are currently opened.
tcpOutRsts The number of TCP segments sent containing the reset (RST) flag.