The TCP/IP Connection report lists information about individual TCP/IP connections, including job name, IP addresses and ports, data transferred and performance information.
It is generated from SMF type 119 subtype 1 and 2 records. These records are generated for every connection, so IBM warns to use them with care and this record subtype might not be routinely collected.
Tabs
•Server - The Passive Open (server socket) flag is set in the connection termination record
•Client - The Active Open (client socket) flag is set in the connection termination record
•Open - No termination record was found for this connection
Report Parameters
Parameter |
Description |
System |
Filter by system. |
Jobname |
Filter by job name. |
IP Addr |
Filter by local or remote IP address |
Port |
Filter by local or remote port. |
Columns
Column |
Description |
Time |
The time the record was written (connection close). |
System |
The system that wrote the record. |
Jobname |
Connection address space name. |
Remote IP |
Remote IP address. |
Remote Port |
Remote port. |
Local IP |
Local IP address. |
Local Port |
Local port. |
Conn ID |
Connection ID. |
Open |
Connection establishment time. |
Close |
Session end time - the time session entered TIMEWAIT or LASTACK state. |
Reason |
Connection termination reason. |
Duration |
Time between connection establishment and TIMEWAIT or LASTACK. |
Bytes In |
Inbound byte count. |
Bytes In/Sec |
Average inbound transfer speed. Not useful if there were significant periods of time with no data transferred. |
Bytes Out |
Outbound byte count. |
Bytes Out/Sec |
Average outbound transfer speed. Not useful if there were significant periods of time with no data transferred. |
Send Window |
Send window at connection close. |
Max Send Window |
Maximum send window size. |
Congestion Window |
Congestion window at connection close. |
Send Seg. Size |
Send segment size at connection close. |
RTT (ms) |
Round trip time in milliseconds, at connection close. |
RTT Variance |
Round trip time variance estimator in milliseconds, at connection close. |
Segments In |
Inbound segment count. |
Segments Out |
Outbound segment count. |
Dup Acks |
Total number of DUP ACKs received. |
Retransmits |
Number of retransmits required. |
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