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

 

 

tcpRtoAlgorithmThe 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.

 

 

tcpRetransSegsThe 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.

 

 

tcpCurConnThe total number of outstanding TCP sessions that are currently opened.

 

 

tcpOutRstsThe number of TCP segments sent containing the reset (RST) flag.

 

 

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