TCP Listener Attributes
Use the TCP Listener attributes to display performance and identifying information for a specific listener connection.
Accepted Connections The number of connections accepted by this listener during the most recent time interval.
Active Connections The number of current connections.
Active Connection High Water Mark High water mark for active connections. This is the highest value recorded for this listener in the "active connections" field.
APPLDATA Result of SIOCSAPPLDATA ioctl. APPLDATA enables applications to associate 40 bytes of application-specific information with TCP sockets they own. This information can assist problem determination, capacity planning, and accounting applications.
Application Name The job name associated with the application address space that opened and bound the socket.
ASID The MVS address space ID of the address space that opened the socket.
Backlog Connections Rejected The number of connections dropped by this listener due to backlog exceeded during the most recent time interval.
Backlog Connections Rejected Time Stamp The date and time that a connection was most recently rejected due to a backlog exceeded.
Backlog Limit The maximum number of connections allowed in backlog at one time.
Bytes Received The number of bytes received by this listener at the end of the last interval.
Bytes Sent The number of bytes sent by this listener at the end of the last interval.
Bytes Sent or Received The number of bytes sent or received by this listener at the end of the last interval.
<Blank>=0
Yes=1
No=2
Collection Time The time and date of the data sampling.
Connection Rate Number of accepted connections per minute during the most recent time interval.
Connections in Backlog The current number of connections in backlog.
Current Non-SMC Connections The number of active non-SMC connections.
DVIPA Dynamic VIPA (DVIPA) indicator for listener socket. The following values are valid:
- 0 = [blank] Not available
- 1 = Yes
- 2 = No
DVIPA Quiesced Dynamic VIPA (DVIPA) indicator for whether or not the DVIPA associated with the listener socket has quiesced. The following are valid:
- 0 = [blank] Not available
- 1 = Yes
- 2 = No
Established Connections in Backlog The number of Connections in Backlog that are established. The format is an unsigned integer.
FRCA Connections in Backlog The number of Connections in Backlog that are established Fast Response Cache Accelerator (FRCA) connections not presented to be accepted by the application. The format is an unsigned integer.
Hex Connection Number The hex representation of the connection number.
Idle Time Since Last Accept The amount of time in hours that the server has been idle since the most recent connection was accepted..
Listener Type This field is an indicates whether or not the listener is for a TN3270 server. A value of x'01' indicates the listener is is for a TN3270 Server. The following are valid values:
- 0 = Unknown
- 1 = TN3270_Server
Local IP Address The local IP address for this connection. For UDP end points, a value of 0.0.0.0 in this field indicates that the UDP end point will accept datagrams from any local IP address. For TCP listeners, this IP address will be zero when the application will accept connections to any local IP address.
Local Name The name of the LPAR.
Local Port The local port for this connection.
Local Port 14 The local port for this connection.
Non-Secure Connections The number of TCP connections not secured by AT-TLS.
Origin Node Unique identifier for the TCP/IP stack being displayed.
Percent Active Connections The percentage of active connections vs the connection high water mark.
Percent Non-Secure Connections The percentage of TCP connections not secured by AT-TLS.
Percent Secure Connections The percentage of AT-TLS secured TCP connections.
Percent SMC-D Connections The percentage of the active connections which use SMC-D.
Percent SMC-R Connections The percentage of the active connections which use SMC-R.
Secure Connections The number of AT-TLS secured TCP connections.
Server Up Time The amount of time in hours that the listener has been active.
SMC Auto Configured The AutoSMC function is active.
SMC Auto Percent Percentage of connections requesting SMC whose workload pattern matched SMC criteria during the last AutoSMC function interval.
SMC-D Configured SMC-D is or has been configured on this stack.
SMC-D Connections The number of SMC-D connections that the server has accepted in the last interval.
SMC-D Conn Rate The number of SMC-D connections per minute that the server has accepted in the last interval.
SMC-D Current Connections The number of active connections to this server using SMC-D.
SMC-D Total Connections The number of connections that this server has accepted using SMC-D.
SMC Port Configured SMC UseSMC (SMCUSESMC) is due to the specification of the NOSMC or SMC parameters on the PORT or PORTRANGE profile statement for the server's port rather than the results of AutoSMC function (GLOBALCONFIG SMCCGLOBAL AUTOSMC).
SMC-R Configured SMC-R is or has been configured on this stack.
SMC-R Connections The number of SMC-R connections that the server has accepted in the last interval.
SMC-R Conn Rate The number of SMC-R connections per minute that the server has accepted in the last interval.
SMC-R Current Connections The number of active connections to this server using SMC-R.
SMC-R Total Connections The number of connections that this server has accepted using SMC-R.
Sysplex Name The name of the sysplex that the monitored system is part of.
System ID The SMF system ID.
TCPIP STC Name The TCP/IP job name.
Time Stamp for Active Connections High Water Mark The date and time when the value for the high water mark was collected.
Total Accepted Connections The total number of accepted connections.
Total Backlog Connections Rejected The total number of connections rejected because the backlog limit was exceeded before the listener was able to accept the waiting connections. z/OS Communications Server rejects a new connection when the number of connections waiting to be accepted exceeds the backlog limit for a listener. The format is an unsigned integer.
Total Bytes The number of bytes sent or received by this listener.
Total Bytes Sent The number of bytes sent by this listener.
Total Bytes Received The number of bytes received by this listener.
Total Non-SMC Connections The total number of non-SMC connections.
<Blank>=0
SMC=1
TCP=2
Filler 1 Filler 1