Viewing TCP Statistics

View TCP statistics to manage network performance.

Procedure

View TCP statistics:

show ip tcp statistics

Example

Switch:1#show ip tcp statistics
show ip tcp global statistics:
------------------
ActiveOpens:        0
PassiveOpens:       37
AttemptFails:       0
EstabResets:        34
CurrEstab:          1
InSegs:             6726
OutSegs:            7267
RetransSegs:        10
InErrs:             0
OutRsts:            10

Job Aid

The following table describes the output for the show ip tcp statistics command.

Table 1. show ip tcp statistics command output
Field	Description
ActiveOpens	The count of transitions by TCP connections to the SYN-SENT state from the CLOSED state.
PassiveOpens	The count of transitions by TCP connections to the SYN-RCVD state from the LISTEN state.
AttemptFails	The count of transitions by TCP connections to the CLOSED state from either the SYN-SENT state or the SYN-RCVD state, plus the count of transitions to the LISTEN state from the SYN-RCVD state.
EstabResets	The count of transitions by TCP connections to the CLOSED state from the ESTABLISHED or CLOSE-WAIT state.
CurrEstab	The count of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT.
InSegs	The total count of segments received, including those received in error. This count includes segments received on currently established connections.
OutSegs	The total number of segments sent, including those on current connections but excluding those containing only retransmitted octets.
RetransSegs	The total count of TCP segments transmitted containing one or more previously transmitted octets.
InErrs	The count of segments received in error.
OutRsts	The count of TCP segments sent containing the RST flag.