Statistics Commands

Table 60 TCP statistics

 

 

Statistics

Description

 

 

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.

 

 

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