Description: This MIB module defines the managed objects for physical layer characteristics of Fibre Channel interfaces and performance statistics objects for protocol specific counters in Fibre Channel devices. Performance monitoring (PM) parameters are used by service providers to gather, store, set thresholds for and report performance data for early detection of problems. Thresholds are used to set error levels for each PM parameter. During the accumulation cycle, if the current value of a performance monitoring parameter reaches or exceeds its corresponding threshold value, a threshold crossing alarm (TCA) is generated. The TCAs provide early detection of performance degradation.