HP AE370A HP StorageWorks Fabric OS 6.x administrator guide (5697-0015, May 20 - Page 359

Known display problem and workaround When two shared ports on an FC4-48 blade are receiving traffic and the primary port goes offline, all the frames that are out for delivery for the primary port are dropped, but the counters show them as dropped on the secondary port that shares the same area. Error counters increment unexpectedly for the secondary port, but the secondary port is operating properly. If this occurs, clear the counters on the secondary port after primary port goes offline. Clearing monitor counters Before you clear statistics counters, verify the valid monitor numbers on a specific port using the perfMonitorShow command, to make sure the correct monitor counters are cleared. To clear statistics counters for all or a specified monitor, use the perfMonitorClear command. After the command has been executed, the Telnet shell confirms that the counters on the monitor have been cleared. The command format is: perfmonitorclear --class monitor_class [slotnumber/]portnumber [monitorId] Fabric OS 6.x administrator guide 359