Viewing statistics 108
TCP statistics are described in the following table:
Table 87 TCP Statistics
Statistic Description
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.
tcpRtoAlgorithm The algorithm used to determine the timeout value used for retransmitting
unacknowledged octets.
tcpMaxConn The limit on the total number of TCP connections the entity (the switch) can support. In
entities where the maximum number of connections is dynamic, this object should
contain the value -1.
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 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.
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 SYNRCVD 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.
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 RST flag.
All TCP allocated control blocks
Destinate Address Switch IP address of TCP connections.
Remote Port TCP port used by the remote device.
Source Address IP address of TCP source connections.
Local Port Available TCP ports used for connecting to the switch.
State State of each TCP connection.
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