Cabletron Systems SmartSTACK ETHERNET ELS10-27 User Manual

Contents

4-6Monitoring and Managing Your SmartSTACK Ethernet ELS10-27Modifying The Number Of Statistic Samples SavedThe number of buckets (snapshots) of Ethernet statistics saved is set viaan SNMP command. The number may be modified at any time. When thenumber of buckets reaches the value set, the saved statistics in the oldestbucket associated with this History Control Group entry are replaced bythe values of the current statistics. If the number of buckets changes to anumber that is less than what is currently stored, enough of the oldestbuckets are deleted, and any allocated memory is freed. If the number ofbuckets changes to a number greater than the current value, the numberof entries is allowed to grow (i.e. more memory is allocated).Each entry of the History Control Group requires statistics to be collectedat a given interval (HistoryControlTable.Interval). The needed timersmust now be setup. Also, memory must be allocated for each neededentry of the Ethernet History Group. The value ofHistoryControlTable.BucketsRequested must be checked and the codeshould attempt to allocate this number of Ethernet History Group entries.If this amount of memory cannot be allocated theHistoryControl.BucketsGranted must be updated to reflect the correctvalue.4.4 SMARTSTACK ETHERNET ELS10-27 STATISTICSThe SmartSTACK Ethernet ELS10-27 gathers statistics that can help youbuild a comprehensive profile of the network traffic flow between eachLocal Area Network (LAN) you are connecting, as well as the networktraffic flow between each Ethernet port on the SmartSTACK EthernetELS10-27.SmartSTACK Ethernet ELS10-27 statistics are divided into four groups:• System statistics• Ethernet port statistics• Traffic analysis statistics• SNMP statisticsYou can use this information to analyze your overall networkperformance and to make configuration changes as necessary. Forexample, Ethernet port statistics can help you identify network devicesthat require high bandwidth, and therefore should be connected through