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 48 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 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.

Command Line Interface 55