KN3 OSA-Express5S Ports Errors attributes

Use the KN3 OSA-Express5S Ports Errors attributes to monitor error and control data for individual ports on an OSA-Express5S and OSA-Express6S feature. There can be two physical ports on each OSA channel path identifier, each with different data. When two ports are present, each one is assigned a separate ifIndex by the operating system. Each ifIndex contains the data for the corresponding port.

Alignment Errors The number of packets received with alignment errors (the packet is not an integer number of bytes in length) during the latest collection interval. This field is not valid for 10 gigabit features and will be zero (0) for these devices. A valid value is a long long integer.

Channel Number The channel path identifier (CHPID) corresponding to this device. A valid value is a string of up to 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 (Tivoli Enterprise Portal) or yy/mm/dd hh:mm:ss (3270)

Where:

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

Frame Check Sequence Errors The number of frame check sequence errors during the latest collection interval. Frame check sequence (FCS) errors indicate that frames of data are being corrupted during transmission. FCS error count is the number of frames that were transmitted or received with a bad checksum (CRC value) in the Ethernet frame. These frames are dropped and not propagated onto other ports. Software flow control issues and partner point-to-point protocol (PPP) issues can contribute to function control sequence (FCS) errors. A valid value is a long long integer.

Interface Index The interface index associated with this port. A valid value is an integer.

Jabber Frames Received The number of frames received by the OSA during the most recent time interval that passed address filtering, were greater than maximum size in length, and had a bad cyclic redundancy check (CRC). A valid value is a long long integer.

The maximum transmission unit (MTU) is the maximum packet size, in bytes, that can be sent on an interface. 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, see 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 filter criteria, but is undersized or oversized. A valid value is a long long integer.

No Free Buffer Space on NIC The number of times during the latest collection interval that a received packet came into the network interface controller (NIC), but the NIC had no free (available) buffer space to load the packet into. A valid value is a long long integer.

No Free Descriptors on LAN The number of times during the latest collection interval that a received packet came into the network interface controller (NIC), but the OSA driver had no free (available) descriptors to load the packet into. A valid value is a long long integer.

No Free Descriptors on NIC The number of times during the latest collection interval that a received packet came into the network interface controller (NIC), but the NIC had no free (available) descriptors to load the packet into. A valid value is a long long integer.

Origin Node The unique identifier for the TCP/IP stack being displayed. A valid value is a string of up to 32 characters.

Oversized Frames Received The number of frames received by the OSA during the most recent time interval that passed address filtering and had a valid cyclic redundancy check (CRC), but were longer than the maximum size of 1522 bytes for operating-system embedded (OSE) non-queued direct I/O (non-QDIO) features or 16384 bytes for OSD queued direct I/O (QDIO) features. A valid value is a long long integer.

Port Name The name of the port as specified by TCP/IP. A valid value is a string of up to 32 characters.

Port Number The physical port number for this port. A valid value is an integer.

System ID The System Management Facility (SMF) system identifier for the z/OS system where the OMEGAMON for Networks monitoring agent collected the data. A valid value is a string of up to 4 characters.

TCPIP STC Name The TCP/IP started task name. A valid value is a string of up to 8 characters.

Total Alignment Errors The total number of packets received by the OSA since the last time the OSA port was reset with alignment errors (the packet is not an integer number of bytes in length). This field is not valid for 10 gigabit features and will be zero (0) for these devices. A valid value is a long long integer.

Total Frame Check Sequence Errors The total number of frame check sequence errors on the OSA port. Frame check sequence (FCS) errors indicate that frames of data are being corrupted during transmission. FCS error count is the number of frames that were transmitted or received with a bad checksum (CRC value) in the Ethernet frame. These frames are dropped and not propagated onto other ports. Software flow control issues and partner point-to-point protocol (PPP) issues can contribute to function control sequence (FCS) errors. A valid value is a long long 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 greater than maximum size in length, and had a bad cyclic redundancy check (CRC). A valid value is a long long integer.

The maximum transmission unit (MTU) is the maximum packet size, in bytes, that can be sent on an interface. 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, see the IBM z/OS Communications Server: IP Configuration Reference.

Total Length Error Packets Received The number of packet length-error events received by the OSA since the last time the OSA port was reset. A length error occurs if an incoming packet passes filter criteria, but is undersized or oversized. A valid value is a long long integer.

Total No Free Buffer Space on NIC The total number of times that a received packet came into the network interface controller (NIC), but the NIC had no free (available) buffer space to load the packet into. A valid value is a long long integer.

Total No Free Descriptors on LAN The total number of times that a received packet came into the network interface controller (NIC), but the OSA driver had no free (available) descriptors to load the packet into. A valid value is a long long integer.

Total No Free Descriptors on NIC The total number of times that a received packet came into the network interface controller (NIC), but the NIC had no free (available) descriptors to load the packet into. A valid value is a long long 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 had a valid cyclic redundancy check (CRC), but were longer than the maximum size of 1522 bytes for operating-system embedded (OSE) non-queued direct I/O (non-QDIO) features or 16384 bytes for OSD queued direct I/O (QDIO) features. A valid value is a long long integer.

Total Undersized Frames Received The number of frames received by the OSA during the most recent time interval that passed address filtering, were smaller than the minimum size of 64 bytes, and had a valid cyclic redundancy check (CRC). Packets shorter than 64 bytes must be padded and may indicate that the LAN is incorrectly configured and not performing up to capacity. A valid value is a long long integer.

Undersized Frames Received The total number of frames received by the OSA that passed address filtering, were smaller than the minimum size of 64 bytes, and had a valid cyclic redundancy check (CRC). Packets shorter than 64 bytes must be padded and may indicate that the LAN is incorrectly configured and not performing up to capacity. A valid value is a long long integer.