Spanning Tree proTocol in layer 2_layer 3

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1、IMPLEMENTATIONGUIDESpanningTreeproTocolinlayer2/layer3environmenTSConfiguringSTPwithJuniperNetworksEXSeriesEthernetSwitchesCopyright©2010,JuniperNetworks,Inc.implemenTaTiongUiDe-SpanningTreeprotocolinlayer2/layer3environmentsTableofContentsexecutiveSummary..............................

2、...................................................1introduction........................................................................................1SpanningTreeprotocoloverview......................................................................1TheJunipernetworkspositiononlayer2

3、versuslayer3.................................................2configurationguide.................................................................................3configurationoptions................................................................................3Option1:Layer2Everywher

4、e(NotRecommended)...................................................3STP/RSTPConfiguration.....................................................................4MSTPConfiguration.........................................................................4Option2:Layer3attheCoreandBetweenCo

5、reandAggregationLayers;Layer2BetweenAggregationandAccessLayersandattheAccessLayer.....................................................5Option3:Layer3Everywhere.....................................................................5SpanningTreeinteroperabilitywithciscoSwitches............

6、...........................................5PVST+.........................................................................................5InteroperatingSTP/RSTPwithPVST+...........................................................6MultipleSpanningTree....................................

7、..................................10VLANSpanningTreeProtocol(VSTP)..........................................................12conclusion........................................................................................15aboutJunipernetworks......................................