TCP Statistics Attributes

Use TCP Statistics attributes to monitor connection statistics and segment traffic for data using the TCP protocol. TCP Statistics is a single-instance attribute group.


Connections Active The number of times TCP connections have made a direct transition to the SYN-SENT state from the CLOSED state. Valid values are positive integers in the range 0 to 2147483647 and can include the use of the *AVG, *MIN, *MAX, or *SUM functions. For example, to express 25 for the number of active connections, enter 25.

Connections Established The number of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT. Valid values are positive integers in the range 0 to 2147483647 and can include the use of the *AVG, *MIN, *MAX, or *SUM functions. For example, to express 70 for the number of established connections, enter 70.

Connection Failures The number of times TCP connections have made a direct transition to the CLOSED state from the SYN-SENT state or from the SYN-RCVD state. This number also includes the number of times TCP connections have made a direct transition to the LISTEN state from the SYN-RCVC state. Valid format is a text string of up to 64 characters. For example, to express 54 for the number of failed connections, enter 54.

Connections Passive The number of times TCP connections have made a direct transition to the SYN-RCVD state from the LISTEN state. Valid format is a text string of up to 64 characters. For example, to express 37 for the number of passive connections, enter 37.

Connections Reset 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. Valid format is a text string of up to 64 characters. For example, to express 125 for the number of connections that were reset, enter 125.

Segments Received/sec The rate that segments are received, including those received in error. This count includes segments received on currently established connections. Valid values are positive integers in the range 0 to 2147483647 and can include the use of the *AVG, *MIN, *MAX, or *SUM functions. For example, to express 53,856 for the rate that segments are received per second, enter 53856.

Segments Retransmitted/sec The rate that segments are retransmitted, that is, segments transmitted containing one or more previously transmitted bytes. Valid values are positive integers in the range 0 to 2147483647 and can include the use of the *AVG, *MIN, *MAX, or *SUM functions. For example, to express 70873 for the rate that segments are retransmitted per second, enter 70873.

Segments/sec The rate that TCP segments are sent or received using the TCP protocol. Valid values are positive integers in the range 0 to 2147483647 and can include the use of the *AVG, *MIN, *MAX, or *SUM functions. For example, to express 8,432 for the rate that segments are sent or received per second, enter 8432.

Segments Sent/sec The rate that segments are sent, including those on current connections. This count excludes those containing only retransmitted bytes. Valid values are positive integers in the range 0 to 2147483647 and can include the use of the *AVG, *MIN, *MAX, or *SUM functions.For example, to express 5,336 for the rate that segments are sent per second, enter 5336.

System Name The network name of the source of this information. Valid format is a text string of up to 64 characters.

Timestamp The date and time the Tivoli Enterprise Monitoring Server samples the data. Standard 16-character date/time format (CYYMMDDHHMMSSmmm), where:

C

Century (0 for 20th, 1 for 21st)

YY

Year

MM

Month

DD

Day

HH

Hour

MM

Minute

SS

Second

mmm

Millisecond

Use simple text strings as described above. For example, enter 0971009130500000 to express October 9, 1997, 1:05:00 pm.