Enterasys csx5500 用户指南
Central Site Remote Access Switch 655
S
YSTEM
S
TATISTICS
TCP Statistics
TCP S
TATISTICS
You can access these statistics by issuing the
tcp stats
console command.
tcpRtoAlgorithm
The algorithm used to determine the timeout value used for retransmitting unacknowledged
octets. This value is always equal to 4 for the Van Jacobson’s algorithm.
octets. This value is always equal to 4 for the Van Jacobson’s algorithm.
tcpRtoMin
The minimum value permitted by a TCP implementation for the retransmission timeout, measured
in milliseconds.
in milliseconds.
tcpRtoMax
The maximum value permitted by a TCP implementation for the retransmission timeout, measured
in milliseconds.
in milliseconds.
tcpMaxConn
The limit on the total number of TCP connections the system can support.
tcpActiveOpens
The number of times TCP connections have made a direct transition to the SYN-SENT state from
the CLOSED state.
the CLOSED state.
tcpPassiveOpens
The number of times TCP connections have made a direct transition to the SYN-RCVD state from
the LISTEN state.
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.
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.
either the ESTABLISHED state or the CLOSE-WAIT state.
tcpCurrEstab
The number of TCP connections for which the current state is either ESTABLISHED or CLOSE-
WAIT. This counter is not currently kept up to date.
WAIT. This counter is not currently kept up to date.
tcpInSegs
The total number of segments received, including those received in error. This count includes
segments received on currently established connections.
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.
containing only retransmitted octets.
tcpRetransSegs
The total number of segments retransmitted (the number of tcp segments transmitted containing
one or more previously transmitted octets).
one or more previously transmitted octets).