
© Copyright Lenovo 2018 Contents 7
Protocol‐BasedVLANs........................ 148
Port‐Basedvs.Protocol‐BasedVLANs................ 148
PVLANPriorityLevels ...................... 149
PVLANTagging......................... 149
PVLANConfigurationGuidelines.................. 149
ConfiguringPVLAN ....................... 150
PrivateVLANs............................ 151
PrivateVLANPorts........................ 151
ConfigurationGuidelines..................... 152
ConfigurationExample...................... 152
Chapter 9. Ports and Link Aggregation (LAG) . . . . . . . . . . . . 155
ConfiguringPortModes ........................ 156
ConsiderationsforConfiguringPortModes ............. 157
ConfiguringQSFP28Ports....................... 160
ConfiguringSFPPorts......................... 161
ForwardingErrorCorrection ...................... 162
AggregationOverview........................ 163
StaticLAGs............................. 164
BeforeConfiguringStaticLAGs ................... 164
StaticLAGConfigurationRules ................... 164
ConfiguringaStaticLAG ..................... 165
ConfigurableLAGHashAlgorithm................... 167
LinkAggregationControlProtocol................... 169
LACPModes........................... 170
LACPindividual......................... 171
ConfiguringLACP........................ 172
Chapter 10. Spanning Tree Protocols. . . . . . . . . . . . . . . . 173
SpanningTreeProtocolModes..................... 174
GlobalSTPControl........................ 174
PVRSTMode............................. 175
PortStates............................ 175
BridgeProtocolDataUnits..................... 176
DeterminingthePathforForwardingBPDUs ........... 176
BridgePriority........................ 176
PortPriority......................... 177
RootGuard ..........................177
LoopGuard..........................177
PortPathCost......................... 178
SimpleSTPConfiguration ..................... 178
Per‐VLANSpanningTreeGroups .................. 180
UsingMultipleSTGstoEliminateFalseLoops........... 180
VLANandSTGAssignment.................. 181
ManuallyAssigningSTGs................... 182
GuidelinesforCreatingVLANs................. 182
RulesforVLANTaggedPorts.................. 182
AddingandRemovingPortsfromSTGs ............. 183
Switch‐CentricConfiguration..................184
ConfiguringMultipleSTGs..................... 185