HP StorageWorks 2/64 HP StorageWorks Fabric OS 5.x Fabric Watch Administrator - Page 16
Performance monitor class areas, Port class areas - 16n
![]() |
View all HP StorageWorks 2/64 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 16 highlights
• HP StorageWorks SAN Switch 2/8V, 2/16V and 2/16N • HP StorageWorks SAN Switch 2/32 • HP StorageWorks SAN Switch 4/32 Performance monitor class areas Table 6 lists Fabric Watch areas in the Performance Monitor class and describes each area. Table 6 Performance monitor class areas Area Indicates Customer Define Invalid CRC Relies on performance monitor telnet commands. For more information on this area, refer to the HP StorageWorks Fabric OS 5.x command reference guide. Errors have been detected in the Fibre Channel frame. Invalid CRC messages occur when the number of CRC errors in Fibre Channel frames for specific source ID (S_ID) and destination ID (D_ID) pairs change. These messages can also be caused by dirty or aging equipment and temperature fluctuations. Receive Performance The percentage of word frames traveling from the configured S_ID to the D_ID exceeds the configured thresholds. Transmit Performance The percentage of word frames traveling from the configured S_ID to the D_ID; user configuration triggers these messages, so you can use the Transmit Performance area to tune your network. Port class areas Table 7 lists and describes the Fabric Watch areas in the port class. Table 7 Port class areas Area Invalid Cyclic Redundancy Checks (CRCs) Invalid Transmission Word Link Failure Count Loss of Signal Count Loss of Synchronization (Sync) Count Primitive Sequence Protocol Error Indicates A frame is invalid and cannot be transmitted. Invalid CRCs can represent noise on the network. Such frames are recoverable by retransmission. Invalid CRCs indicate a potential hardware problem. These errors occur mostly in aging fabrics. A word did not transmit successfully. Invalid word messages usually indicate a hardware problem. A link loses signal. Both physical and hardware problems can cause link failures. Link failures frequently occur due to a loss of synchronization. Check for concurrent loss of synchronization errors and, if applicable, troubleshoot those errors. Link failures also occur due to hardware failures. The number of times that a signal loss occurs in a port. Signal loss indicates that no data is moving through the port. A loss of signal usually indicates a hardware problem. Two devices failed to communicate at the same speed. Synchronization losses are always accompanied by link failure. Loss of synchronization errors frequently occur due to a faulty SFP or cable. A CRC sum disparity. Occasionally, these errors occur due to software glitches. Persistent errors occur due to hardware problems. 16 Fabric Watch concepts
![](/manual_guide/products/hewlettpackard-storageworks-264-hp-storageworks-fabric-os-5x-fabric-watch-administrator-guide-aarvj0bte-2005-d76cef5/16.png)