OSA 10Gigabit Ports Errors Attributes

Use the OSA 10Gigabit Ports Errors attributes to monitor the data associated with a port on an OSA-Express2 10 Gigabit Ethernet feature.

Channel Number The channel path identifier (CHPID) corresponding to this device. The format is a string of two hexadecimal characters.

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:

CRC Errors The number of cyclic redundancy check (CRC) errors on packets received on the LAN during the most recent time interval. The format is an unsigned integer.

Deferred Events The number of events deferred during the most recent time interval. A deferred event occurs when the transmitter cannot immediately send a packet because the medium is busy, XOFF (Transmitter OFF) frames are being sent, or the link is not up. The format is an unsigned integer.

Host Name The host name of the TCP/IP stack. The format is an alphanumeric string no longer than 255 characters.

Jabber Frames Received The number of frames received by the OSA during the most recent time interval that passed address filtering, were longer than maximum size, and had a bad cyclic redundancy check (CRC). The format is an unsigned integer.

The maximum transmission unit (MTU) is the maximum packet size, in bytes, that can be sent on an interface. In Queued Direct I/O (QDIO) mode, the MTU size used by the OSA feature is 8992 bytes. In non-QDIO mode, the MTU size used by the OSA is 1492 bytes. You can set the MTU size (as long as you stay within the limits and maximum values of the OSA) using TCP/IP profile statements. You can also set the parameters of the neighboring network interface card (NIC) and port (usually a port on a switch, but could be another OSA). For information about setting maximum size for OSA devices, refer to the IBM z/OS Communications Server: IP Configuration Reference.

Length Error Packets Received The number of length-error packets received by the OSA during the most recent time interval. A length error occurs if an incoming packet passes the filter criteria but the Length field does not match the number of bytes counted in the Data field. In the case of MAC control frames (including Pause), this attribute determines if the Data field is correctly padded to 46 bytes. The format is an unsigned integer.

Local Faults The number of times that local faults were detected during the most recent time interval. Local faults are errors on the local side of the link (that is, at the OSA card). The format is an unsigned integer.

Missed Packets The number of packets missed by the OSA during the most recent time interval. Packets are missed when the receiving FIFO (first in, first out) buffer has insufficient space to store the incoming packet. This could be due to too few buffers being allocated, or because there is insufficient bandwidth on the I/O bus. The format is an unsigned integer.

Not Stored Frames Received The number of times that frames were received by the OSA during the most recent time interval when no descriptor buffers were available to store frames. The format is an unsigned integer.

Origin Node The unique identifier for the TCP/IP stack being displayed. The format is an alphanumeric string no longer than 32 characters.

Oversized Frames Received The number of frames received by the OSA during the most recent time interval that passed address filtering and were longer than the maximum size, regardless of whether or not the cyclic redundancy check (CRC) was valid. The format is an unsigned integer.

The maximum transmission unit (MTU) is the maximum packet size, in bytes, that can be sent on an interface. In Queued Direct I/O (QDIO) mode, the MTU size used by the OSA feature is 8992 bytes. In non-QDIO mode, the MTU size used by the OSA is 1492 bytes. You can set the MTU size (as long as you stay within the limits and maximum values of the OSA) using TCP/IP profile statements. You can also set the parameters of the neighboring network interface card (NIC) and port (usually a port on a switch, but could be another OSA). For information about setting maximum size for OSA devices, refer to the IBM z/OS Communications Server: IP Configuration Reference.

Port Name The name of the port as specified by the VTAM Transport Resource List Entry (TRLE). The format is a 16-character alphanumeric string.

Port Number The physical port number for this port. Currently, this value can be only zero (0). The format is an integer.

Remote Faults The number of times that remote faults were detected during the most recent time interval. Remote faults are errors on the remote side of the link (for example, a client or switch endpoint). The format is an unsigned integer.

System ID The SMF system ID. The format is an alphanumeric string no longer than 4 characters.

TCPIP STC Name The name of the TCP/IP job. The format is an alphanumeric string no longer than 8 characters.

Total CRC Errors The number of cyclic redundancy check (CRC) errors on packets received on the LAN by the OSA since the last time the OSA port was reset. The format is an unsigned integer.

Total Deferred Events The number of events deferred by the OSA since the last time the OSA port was reset. A deferred event occurs when the transmitter cannot immediately send a packet because the medium is busy, XOFF (Transmitter OFF) frames are being sent, or the link is not up. The format is an unsigned integer.

Total Jabber Frames Received The number of frames received by the OSA since the last time the OSA port was reset that passed address filtering, were longer than maximum size, and had a bad cyclic redundancy check (CRC). The format is an unsigned integer.

The maximum transmission unit (MTU) is the maximum packet size, in bytes, that can be sent on an interface. In Queued Direct I/O (QDIO) mode, the MTU size used by the OSA feature is 8992 bytes. In non-QDIO mode, the MTU size used by the OSA is 1492 bytes. You can set the MTU size (as long as you stay within the limits and maximum values of the OSA) using TCP/IP profile statements. You can also set the parameters of the neighboring network interface card (NIC) and port (usually a port on a switch, but could be another OSA). For information about setting maximum size for OSA devices, refer to the IBM z/OS Communications Server: IP Configuration Reference.

Total Length Error Packets Received The number of length-error packets received by the OSA since the last time the OSA port was reset. A length error occurs if an incoming packet passes the filter criteria but the Length field does not match the number of bytes counted in the Data field. In the case of MAC control frames (including Pause), this attribute determines if the Data field is correctly padded to 46 bytes. The format is an unsigned integer.

Total Local Faults The number of times that local faults were detected by the OSA since the last time the OSA port was reset. Local faults are errors on the local side of the link (that is, at the OSA card). The format is an unsigned integer.

Total Missed Packets The number of packets missed by the OSA since the last time the OSA port was reset. Packets are missed when the receiving FIFO (first in, first out) buffer has insufficient space to store the incoming packet. This could be due to too few buffers being allocated, or because there is insufficient bandwidth on the I/O bus. The format is an unsigned integer.

Total Not Stored Frames Received The number of times that frames were received by the OSA since the last time the OSA port was reset when no descriptor buffers were available to store frames. The format is an unsigned integer.

Total Oversized Frames Received The number of frames received by the OSA since the last time the OSA port was reset that passed address filtering and were longer than the maximum size, regardless of whether or not the cyclic redundancy check (CRC) was valid. The format is an unsigned integer.

The maximum transmission unit (MTU) is the maximum packet size, in bytes, that can be sent on an interface. In Queued Direct I/O (QDIO) mode, the MTU size used by the OSA feature is 8992 bytes. In non-QDIO mode, the MTU size used by the OSA is 1492 bytes. You can set the MTU size (as long as you stay within the limits and maximum values of the OSA) using TCP/IP profile statements. You can also set the parameters of the neighboring network interface card (NIC) and port (usually a port on a switch, but could be another OSA). For information about setting maximum size for OSA devices, refer to the IBM z/OS Communications Server: IP Configuration Reference.

Total Remote Faults The number of times that remote faults were detected by the OSA since the last time the OSA port was reset. Remote faults are errors on the remote side of the link (for example, client or switch endpoint). The format is an unsigned integer.

Total Undersized Frames Received The number of frames received by the OSA since the last time the OSA port was reset that passed address filtering, and were smaller than the minimum size of 64 bytes (regardless of whether the cyclic redundancy check (CRC) was valid). Packets shorter then 64 bytes have to be padded and may indicate that the LAN is incorrectly configured and not performing up to capacity. The format is an unsigned integer.

Undersized Frames Received The number of frames received by the OSA during the most recent time interval that passed address filtering and were smaller than the minimum size of 64 bytes (regardless of whether the cyclic redundancy check (CRC) was valid). Packets shorter then 64 have to be padded and may indicate that the LAN is incorrectly configured and not performing up to capacity. The format is an unsigned integer.