Appendix A RMON alarm variables 217Configuring Network ManagementBridge rcStgTimeSinceTopologyChangeThe time (in hundredths of a second) since the lasttopology change was detected by the bridge entity.rcStgTopChanges The total number of topology changes detected by thisbridge since the management entity was last reset orinitialized.rcStgMaxAge The maximum age of Spanning Tree Protocolinformation learned from the network on any portbefore it is discarded, in hundredths of a second. Thisis the actual value that this bridge is currently using.rcStgPortForwardTransitionsThe number of times this port has transitioned fromthe Learning state to the Forwarding state.rcStgPortInConfigBpdusThe number of Config BPDUs received by this port.rcStgPortInTcnBpdusThe number of Topology Change Notification BPDUsreceived by this port.rcStgPortOutConfigBpdusThe number of Config BPDUs transmitted by this port.rcStgPortOutTcnBpdusThe number of Topology Change Notification BPDUstransmitted by this port.dot1dTpPortInFrames The number of frames that have been received by thisport from its segment. Note that a frame received onthe interface corresponding to this port is counted bythis object if and only if it is for a protocol beingprocessed by the local bridging function, includingbridge management frames.dot1dTpPortOutFramesThe number of frames that have been transmitted bythis port to its segment. Note that a frame transmittedon the interface corresponding to this port is countedby this object if and only if it is for a protocol beingprocessed by the local bridging function, includingbridge management frames.dot1dTpLearnedEntryDiscards.0The total number of Forwarding Database entries thathave been or would have been learned but have beendiscarded due to a lack of space to store them in theForwarding Database. If this counter is increasing, itindicates that the forwarding database is regularlybecoming full (a condition that has unpleasantperformance effects on the subnetwork). If thiscounter has a significant value but is not presentlyincreasing, it indicates that the problem has beenoccurring but is not persistent.Utilization rcSysCpuUtil.0 Percentage of CPU utilization.Table 65 Alarm variables (continued)Category Subcategory Variable Definition
