TCP/IP Stack Layer Attributes

Use the TCP/IP Stack Layer attributes to monitor performance data for the layers of a selected TCP/IP stack.

Collection Time The time and date of the data sampling. This time is displayed in the following format:

mm/dd/yy hh:mm:ss

Where:

The stored format is a string no longer than 16 characters in the format CYYMMDDHHMMSSmmm (as in 1020315064501000 for 03/15/02 06:45:01) where:

Fragmentation Count The number of IP segments requiring fragmentation that were successfully fragmented. The format is an integer.

Fragmentation Failure Percentage The percentage of IP segments requiring fragmentation that were not successfully fragmented. The range for this value is from 0% to 100%.

Fragmentation Failures The number of IP segments requiring fragmentation that were not successfully fragmented. The format is an integer.

Fragmentation Percentage The percentage of IP segments that were successfully fragmented since TCP/IP initialization. The range for this value is from 0% to 100%.

Fragments To Be Reassembled The number of IP fragments received that needed to be reassembled by the IP layer during the most recent sample. The format is an integer.

Host Name The host name of the TCP/IP stack. The format is a string up to 255 characters in length.

Input Datagram Delivery Rate The rate at which input datagrams were delivered during the most recent sample. The format is an integer.

Input Datagram Forward Rate The rate at which datagrams were forwarded during the last sample. The format is an integer.

Input Datagrams Delivered The number of input datagrams successfully delivered to IP user-protocols (including ICMP) during the most recent sample. The format is an integer.

Input Datagrams Forwarded The number of input datagrams being routed through this host (which was not their final IP destination) and forwarded to the final destination during the most recent sample. The format is an integer.

Input Datagrams in Error The number of input datagrams discarded since TCP/IP initialization because of errors. Datagrams have been discarded because of one of the following errors:

Input Discard Percentage The percentage of IP segments this TCP/IP address space received from the network that were undeliverable and therefore discarded. The range for this value is from 0% to 100%.

Input Discards The number of IP segments that this TCP/IP address space received which were undeliverable and therefore discarded since TCP/IP initialization. The format is an integer.

Input Packet Count The number of IP packets (including those received in error) that this TCP/IP address space received from the network since TCP/IP initialization. When the value in the Input Packet Count field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the Input Packet Count (In G) field and the remainder is stored in the Input Packet Count field. The format is an integer.

Input Packet Count (in G) The number of IP packets (including those received in error) that this TCP/IP address space received from the network since TCP/IP initialization, divided by 1,073,741,824. When the value in the Input Packet Count field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the Input Packet Count (in G) field and the remainder is stored in the Input Packet Count field. The format is an integer.

Origin Node This is the unique identifier for the TCP/IP stack being displayed. The format is a string up to 32 characters in length.

Output Discard Percentage The percentage of all IP output segments sent from this TCP/IP address space to the network that were undeliverable and discarded. The range for this value is from 0% to 100%.

Output Discards The number of IP segments that this address space did not send that were undeliverable and therefore discarded since TCP/IP initialization. The format is an integer.

Output No Routes The number of IP segments that this address space did not forward because there was no available route to the destination since TCP/IP initialization. The format is an integer.

Output Packet Count The number of IP packets that local IP user-protocols (including ICMP) supplied to IP since TCP/IP initialization. When the value in the Output Packet Count field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the Output Packet Count (In G) field and the remainder is stored in the Output Packet Count field. The format is an integer.

Note: This count does not include any packets counted in Input Datagrams Forwarded.

Output Packet Count (in G) The number of IP packets that local IP user-protocols (including ICMP) supplied to IP since TCP/IP initialization, divided by 1,073,741,824. When the value in the Output Packet Count field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the Output Packet Count (in G) field and the remainder is stored in the Output Packet Count field. The format is an integer.

Note: This count does not include any packets counted in Input Datagrams Forwarded.

Reassembly Count The number of IP segments received that were successfully reassembled since TCP/IP initialization. The format is an integer.

Reassembly Failure Count The number of IP segments requiring reassembly that were not reassembled since TCP/IP initialization. A reassembly fails when all segments that compose the fragmented datagram are not received. The format is an integer.

Reassembly Failure Percentage The percentage of IP segments requiring reassembly that were not reassembled. The range for this value is from 0% to 100%.

Reassembly Percentage The percentage of IP segments reassembled since TCP/IP initialization. The range for this value is from 0% to 100%.

Receive Datagram Rate The number of datagrams received, per minute, during the most recent sample.

System ID The SMF system ID. The format is a string up to 4 characters in length.

TCP Connection Accept Rate The number of connections accepted, per minute, during the most recent sample. The format is an integer.

TCP Connections Accepted The number of connections accepted during the most recent sample. The format is an integer.

TCP Connections Accepted High-Water Mark The high-water mark (the highest value recorded in the TCP Connections Accepted field) for active connections. The format is an integer.

TCP Connections Dropped The total number of connections that were lost by this listener during the most recent interval. The format is an integer. The connections were lost because of one of the following reasons:

TCP FINWAIT2 Timeouts The number of TCP connections that were dropped because the FINWAIT2 timer expired prior to receiving the FIN segment during the most recent sample. The format is an integer.

TCP Input Segment Count The count of TCP segments that this TCP/IP address space received from the network since TCP/IP initialization. When the value in the TCP Input Segment Count field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the TCP Input Segment Count (in G) field and the remainder is stored in the TCP Input Segment Count field. The format is an integer.

TCP Input Segment Count (in G) The count of TCP segments that this TCP/IP address space received from the network since TCP/IP initialization, divided by 1,073,741,824. When the value in the TCP Input Segment Count field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the TCP Input Segment Count (in G) field and the remainder is stored in the TCP Input Segment Count field. The format is an integer.

TCP Keep-Alive Drops The number of TCP connections that were dropped, because there was no response, while sending TCP keepalive probe requests during the most recent sample. The format is an integer.

TCP Out-of-Order Segments The number of out-of-order segments received during the most recent sample. The format is an integer.

TCP Output Segment Count The count of TCP segments that this TCP/IP address space delivered to the network since TCP/IP initialization. When the value in the TCP Output Segment Count field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the TCP Output Segment Count (in G) field and the remainder is stored in the TCP Output Segment Count field. The format is an integer.

TCP Output Segment Count (in G) The count of TCP segments that this TCP/IP address space delivered to the network since TCP/IP initialization, divided by 1,073,741,824.  When the value in the TCP Output Segment Count field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the TCP Output Segment Count (in G) field and the remainder is stored in the TCP Output Segment Count field. The format is an integer.

TCP Percent Out-of-Order Segments The percentage of segments received that were out-of order during the most recent sample. The range for this value is from 0% to 100%.

TCP Receive Segment Rate The number of segments received, per minute, during the most recent sample. The format is an integer.

TCP Received Segment Error Rate The rate at which segments in error were received during the most recent sample. The format is an integer.

TCP Received Segment Errors The number of segments received in error (for example, bad TCP checksums) since TCP/IP initialization. The format is an integer.

TCP Retransmit Percentage The percentage of TCP segments that required retransmission. The range for this value is from 0% to 100%.

TCP Retransmit Threshold Exceeded The number of TCP connections that were dropped, during the most recent sample, because the retransmit threshold was exceeded. The format is an integer.

TCP Retransmitted Segments The number of TCP segments this host retransmitted since TCP/IP initialization. The format is an integer.

TCP Segment Retransmission Rate The rate at which TCP segments were retransmitted during the most recent sample. The format is an integer.

TCP Session Count The number of TCP sessions currently established to this TCP/IP address space. The format is an integer.

TCP Transmit Segment Rate The number of segments transmitted, per minute, during the most recent sample. The format is an integer.

TCP Window Probe Drops The number of TCP connections dropped, because no response was received, while sending window probe requests during the most recent sample. The format is an integer.

TCP Window Probes Sent The number of window probe requests sent during the most recent sample. The format is an integer.

TCPIP STC Name The TCP/IP job name. The format is a string up to 8 characters in length.

Transmit Datagram Rate Number of datagrams requested to be transmitted, per minute, during the most recent sample. The format is an integer.

UDP Discard Percentage The percentage of UDP datagrams that were discarded as undeliverable (including No Port Found errors) because they were received in error. The range for this value is from 0% to 100%.

UDP Input Datagram Count The number of UDP datagrams received since TCP/IP initialization. When the value in the UDP Input Datagram Count field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the UDP Input Datagram Count (in G) field and the remainder is stored in the UDP Input Datagram Count field. The format is an integer.

UDP Input Datagram Count (in G) The number of UDP datagrams received since TCP/IP initialization, divided by 1,073,741,824. When the value in the UDP Input Datagram Count field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the UDP Input Datagram Count (in G) field and the remainder is stored in the UDP Input Datagram Count field. The format is an integer.

UDP Input Errors The number of datagrams discarded as undeliverable because they were received in error (excluding No Port Found errors) since TCP/IP initialization. The format is an integer.

UDP No Port Count The number of UDP datagrams discarded as undeliverable because the port number specified did not match that of any active applications. The format is an integer.

UDP Output Datagram Count The number of datagrams this host sent since TCP/IP initialization. When the value in the UDP Output Datagram Count field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the UDP Output Datagram Count (in G) field and the remainder is stored in the UDP Output Datagram Count field. The format is an integer.

UDP Output Datagram Count (in G) The number of datagrams that this TCP/IP address space sent since TCP/IP initialization, divided by 1,073,741,824. When the value in the UDP Output Datagram Count field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the UDP Output Datagram Count (in G) field and the remainder is stored in the UDP Output Datagram Count field. The format is an integer.

UDP Receive Datagram Rate The datagrams received, per minute, during the most recent sample. The format is an integer.

UDP Total Datagrams Received The total number of UDP datagrams received, including those with errors, since TCP/IP initialization. When the value in the UDP Total Datagrams Received field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the UDP Total Datagrams Received (in G) field and the remainder is stored in the UDP Total Datagrams Received field. The format is an integer.

UDP Total Datagrams Received (in G) The total number of UDP datagrams received, including those with errors, since TCP/IP initialization, divided by 1,073,741,824. When the value in the UDP Total Datagrams Received field exceeds 1,073,741,823, the number is divided by 1,073,741,824. The quotient is stored in the UDP Total Datagrams Received (in G) field and the remainder is stored in the UDP Total Datagrams Received field. The format is an integer.

UDP Transmit Datagram Rate The number of datagrams transmitted, per minute, during the most recent sample. The format is an integer.