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Cisco Systems N3KC3064TFAL3 Configuring Ethernet Interfaces Default Physical Ethernet Settings

Models: N3KC3064TFAL3 N3KC3048TP1GE

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Configuring Ethernet Interfaces

Default Physical Ethernet Settings

1 MTU cannot be changed per-physical Ethernet interface. You modify MTU by selecting maps of QoS classes.

Cisco Nexus 3000 NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)U3(1)

OL-26590-01

Page 39

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Cisco Systems N3KC3064TFAL3, N3KC3048TP1GE Configuring Ethernet Interfaces Default Physical Ethernet Settings, OL-26590-01

Contents

170 West Tasman Drive San Jose, CA Americas HeadquartersFirst Published February 29 Last Modified March 22 Cisco Systems, IncCisco Systems, Inc. All rights reserved Related Documentation for Nexus 3000 Series NX-OS Software Obtaining Documentation and Submitting a Service RequestC O N T E N T S Audience Document ConventionsAbout MTU Configuration Default CDP ConfigurationAbout the Error-Disabled State About the Debounce Timer ParametersConfiguring a Private VLAN Configuring a VLAN as a Management SVIConfiguring VTP Verifying VLAN ConfigurationEnabling Store-and-Forward Switching Reenabling Cut-Through Switching Configuring Access and Trunk InterfacesConfiguring Trunk Ports Verifying Interface ConfigurationEnabling Rapid PVST+ per VLAN Configuring the Root Bridge ID Protocol Timers Port Roles Port StatesForwarding State Disabled State Summary of Port States Configuring Rapid PVST+ Enabling Rapid PVST+Specifying the MST Configuration Revision Number MST Overview MST Regions MST BPDUs MST Configuration InformationConfiguring MST MST Configuration Guidelines Enabling MST Entering MST Configuration Mode Specifying the MST NameConfiguring Spanning Tree Port Types Globally Verifying MST ConfigurationsConfiguring STP Extensions STP Extensions Configuration GuidelinesConfiguring Traffic Storm Control Verifying the MAC Address ConfigurationConfiguring IGMP Snooping Parameters Verifying IGMP Snooping ConfigurationDocument Conventions Obtaining Documentation and Submitting a Service Request, pagePreface AudienceConvention Related Documentation for Nexus 3000 Series NX-OS SoftwareConvention DescriptionRelease Notes Installation and Upgrade GuidesConfiguration Guides Error and System MessagesObtaining Documentation and Submitting a Service Request New and Changed Information for this Release, page FeatureNew and Changed Information for this Release C H A P T E RNew and Changed Information for this Release New and Changed Information for this ReleaseOL-26590-01 VLANs Layer 2 Ethernet Switching OverviewLayer 2 Ethernet Switching Overview, page VLANs, page OverviewPrivate VLANs Spanning TreeSTP Overview STP Extensions Rapid PVST+OL-26590-01 Overview STP ExtensionsDefault Physical Ethernet Settings , page Configuring Ethernet InterfacesAbout the Interface Command Configuring Ethernet Interfaces, pageAbout the Unidirectional Link Detection Parameter Default UDLD Configuration UDLD Aggressive and Nonaggressive ModesFeature About the Cisco Discovery Protocol About the Error-Disabled StateDefault CDP Configuration About Interface SpeedAbout Port Profiles Configuring Ethernet InterfacesAbout the Debounce Timer Parameters About MTU Configurationswitch# configure terminal Configuring the UDLD ModeProcedure Command or Actionprofile portmode portmode Changing an Interface Port Moderunning-config bootflash running-config startup-configswitch# configure terminal Configuring Interface SpeedProcedure Command or ActionCommand or Action Disabling Link NegotiationProcedure Command or Actionserial-number system-name Configuring the CDP Characteristicsadvertise v1 device-id mac-addressCommand or Action Enabling or Disabling CDPProcedure Command or Actionshow interface status err-disabled Enabling the Error-Disabled Detectionconfig t errdisable detect cause all link-flapProcedure Enabling the Error-Disabled RecoveryConfiguring the Error-Disabled Recovery Interval Enters configuration modeStep 3 show interface status err-disabled Configuring the Debounce TimerConfiguring the Description Parameter errdisable recovery interval intervalCommand or Action Displaying Interface InformationDisabling and Restarting Ethernet Interfaces Procedureswitch# show interface type slot / port transceiver Commandswitch# show interface type slot / port switch# show interface type slot / port capabilitiesDisplaying Input Packet Discard Information Default Physical Ethernet Settings Default SettingParameter OL-26590-01 Configuring Ethernet Interfaces Default Physical Ethernet SettingsOL-26590-01 Configuring Ethernet Interfaces Default Physical Ethernet SettingsUnderstanding VLANs Configuring VLANsInformation About VLANs, page Configuring a VLAN, page Information About VLANsVLAN Ranges Usage Creating, Deleting, and Modifying VLANsVLANs Numbers RangeGuidelines and Limitations for VTP Configuring a VLANAbout the VLAN Trunking Protocol Creating and Deleting a VLANswitch# configure terminal Configuring a VLANProcedure Command or ActionProcedure switchconfig# interface ethernetAdding Ports to a VLAN active suspendEnters global configuration mode Configuring a VLAN as a Routed SVIswitchconfig-if# switchport access vlan configure terminalCopies the running configuration to the startup Configuring a VLAN as a Management SVIConfiguring VTP Creates a VLAN interface SVI and configures thestartup-config vtp passwordshow vtp password copy running-configsummary Verifying VLAN Configurationswitch# show running-config vlan vlanid vlanrange switch# show vlan brief id vlanid vlanrange name nameInformation About Private VLANs Configuring Private VLANsConfiguring a Private VLAN, page Verifying the Private VLAN Configuration, pagePrivate VLAN Ports Primary and Secondary VLANs in Private VLANsPrimary, Isolated, and Community Private VLANs Associating Primary and Secondary VLANs Private VLAN Port Isolation Private VLAN Promiscuous TrunksPrivate VLAN Isolated Trunks Broadcast Traffic in Private VLANsEnabling Private VLANs Configuring a Private VLANswitchconfig# feature private-vlan Guidelines and Limitations for Private VLANsProcedure Configuring a VLAN as a Private VLANAssociating Secondary VLANs with a Primary Private VLAN community isolated primaryswitch# configure terminal associationProcedure Command or Actionprivate-vlan host Configuring an Interface as a Private VLAN Host PortConfiguring an Interface as a Private VLAN Promiscuous Port switchconfig-if# switchport private-vlanprivate-vlan promiscuous Configuring a Promiscuous Trunk PortConfiguring an Isolated Trunk Port Configuring the Allowed VLANs for PVLAN Trunking Portsswitch# show interface switchport Verifying the Private VLAN ConfigurationConfiguring Native 802.1Q VLANs on Private VLANs switch# show featureOL-26590-01 Configuring Private VLANs Verifying the Private VLAN ConfigurationInformation About Access and Trunk Interfaces, page Configuring Access and Trunk InterfacesInformation About Access and Trunk Interfaces Understanding Access and Trunk InterfacesFigure 5 Devices in a Trunking Environment Understanding IEEE 802.1Q EncapsulationFigure 6 Header without and with 802.1Q Tag Included Understanding Access VLANsUnderstanding the Native VLAN ID for Trunk Ports Understanding Allowed VLANsUnderstanding Native 802.1Q VLANs VLAN, use the switchport access vlan command Configuring Access and Trunk InterfacesConfiguring a LAN Interface as an Ethernet Access Port mode access trunkProcedure Configuring Access Host PortsConfiguring Trunk Ports Procedureport-channel number Configuring the Native VLAN for 802.1Q Trunking PortsConfiguring the Allowed VLANs for Trunking Ports specified trunk, use the switchport trunk allowed vlanProcedure Configuring Native 802.1Q VLANsStep 1 switch# configure terminal allowed vlan vlan-list all none add except none remove vlan-listswitch# show interface Verifying Interface Configurationswitchconfig# no vlan dot1q tag switch# show vlan dot1q tag nativeConfiguring Access and Trunk Interfaces Verifying Interface ConfigurationOL-26590-01 Guidelines and Limitations for Switching Modes, page Configuring Switching ModesInformation About Switching Modes Information About Switching Modes, pageStore-and-Forward Switching Mode Guidelines and Limitations Guidelines and Limitations for Switching ModesLicensing Requirements for Switching Modes Cut-Through Switching Mode Guidelines and LimitationsReenabling Cut-Through Switching Default Settings for Switching ModesConfiguring Switching Modes Enabling Store-and-Forward SwitchingInformation Feature History for Switching ModesFeature Name ReleasesInformation About Rapid PVST+ Configuring Rapid PVST+Information About Rapid PVST+, page Configuring Rapid PVST+, page Verifying Rapid PVST+ Configurations, pageUnderstanding How a Topology is Created Understanding the Bridge IDBridge Priority Value 8192 Extended System IDSTP MAC Address Allocation Bridge Priority ValueUnderstanding BPDUs Election of the Root Bridge Creating the Spanning Tree TopologyFigure 8 Spanning Tree Topology Rapid PVST+ Overview Understanding Rapid PVST+Rapid PVST+ BPDUs Figure 10 Proposal and Agreement Handshaking for Rapid Convergence Proposal and Agreement HandshakeDescription Protocol TimersPort Roles VariableRapid PVST+ Port State Overview Port StatesBlocking State Learning StateForwarding State Operational Status Disabled StateSynchronization of Port Roles Summary of Port StatesProcessing Superior BPDU Information Bandwidth Spanning-Tree Dispute MechanismPort Cost Processing Inferior BPDU InformationBandwidth Rapid PVST+ and IEEE 802.1Q TrunksRapid PVST+ Interoperation with Legacy 802.1D STP Port PriorityConfiguring Rapid PVST+ Rapid PVST+ Interoperation with 802.1s MSTEnabling Rapid PVST+ terminal mode rapid-pvstswitch# configure Enabling Rapid PVST+ per VLANConfiguring the Root Bridge ID Command or ActionPurpose Step 1 switch# configure terminal Configuring a Secondary Root BridgeProcedure Command or ActionProcedure Configuring the Rapid PVST+ Port Priorityvlan vlan-list port-priority priority Procedurevlan vlan-id cost value auto Configuring the Rapid PVST+ Pathcost Method and Port CostConfiguring the Rapid PVST+ Bridge Priority of a VLAN pathcost method long shortProcedure Configuring the Rapid PVST+ Hello Time for a VLANswitchconfig# spanning-tree vlan ProcedureProcedure Configuring the Rapid PVST+ Forward Delay Time for a VLANConfiguring the Rapid PVST+ Maximum Age Time for a VLAN Specifying the Link TypeRestarting the Protocol Verifying Rapid PVST+ Configurationsswitch# clear spanning-tree detected-protocol switch# show running-config spanning-tree allswitch# show spanning-tree brief switch# show spanning-tree optionsCommand Configuring Rapid PVST+ Verifying Rapid PVST+ ConfigurationsOL-26590-01 Configuring Rapid PVST+ Verifying Rapid PVST+ ConfigurationsInformation About MST Configuring Multiple Spanning TreeInformation About MST, page Configuring MST, page Verifying MST Configurations, pageMST Regions MST BPDUsFigure 14 MST BPDU with M-Records for MSTIs MST Configuration Information IST, CIST, and CSTIST, CIST, and CST Overview Spanning Tree Operations Between MST Regions Spanning Tree Operation Within an MST RegionFigure 15 MST Regions, CIST Regional Roots, and CST Root MST TerminologyBoundary Ports Hop CountSpanning-Tree Dispute Mechanism Figure 16 MST Boundary PortsFigure 17 Detecting a Unidirectional Link Failure Interoperability with IEEE 802.1D Port Cost and Port PriorityEnabling MST Configuring MSTMST Configuration Guidelines Interoperability with Rapid PVST+ Understanding PVST Simulationmst configuration Entering MST Configuration Modeswitchconfig# spanning-tree mode mst switchconfig# no spanning-tree mode mstProcedure switchconfig# spanning-tree mstSpecifying the MST Name spanning-tree mstProcedure Specifying the MST Configuration Revision NumberSpecifying the Configuration on an MST Region ProcedureStep Command or ActionWhen you map VLANs to an MST instance, the mapping is Purposeswitch# configure terminal Mapping and Unmapping VLANs to MST InstancesProcedure Command or ActionProcedure Configuring the Root Bridgesynchronize mst instance-id root primaryProcedure Step 3 switchconfig# no spanning-tree mst instance-id rootsecondary diameter dia hello-time hello-time Configuring a Secondary Root BridgeCommand or Action Configuring the Port PriorityProcedure Command or ActionCommand or Action Configuring the Port CostConfiguring the Switch Priority ProcedureProcedure Configuring the Hello Timehello-time seconds ProcedureProcedure Configuring the Forwarding-Delay TimeConfiguring the Maximum-Aging Time Proceduremax-hops hop-count Configuring the Maximum-Hop CountConfiguring PVST Simulation Globally mst max-age secondsmst simulate pvst global Configuring PVST Simulation Per Portsimulate pvst disable spanning-tree mst simulate pvst global commandSpecifying the Link Type ProcedureCommand or Action Step 1 switch# configure terminalProcedure Verifying MST Configurationsswitch# show running-config spanning-tree all switch# show spanning-tree mst optionsUnderstanding STP Port Types Configuring STP ExtensionsAbout STP Extensions Information About STP ExtensionsSpanning Tree Normal Ports Understanding Bridge AssuranceUnderstanding BPDU Guard Spanning Tree Network PortsSTP Edge Port ConfigurationUnderstanding BPDU Filtering BPDU Filtering GlobalConfiguration Understanding Loop GuardUnderstanding Root Guard ConfigurationBefore You Begin Configuring STP ExtensionsSTP Extensions Configuration Guidelines Configuring Spanning Tree Port Types GloballyProcedure Configuring Spanning Tree Edge Ports on Specified Interfacesport type edge default port type network defaultCommand or Action Configuring Spanning Tree Network Ports on Specified Interfacesport type edge ProcedureCommand or Action Enabling BPDU Guard Globallyport type network Procedurespanning-tree port type edge bpduguard default command switchconfig# spanning-tree port typeedge bpduguard default bpduguard enable disableCommand or Action edge bpdufilter defaultEnabling BPDU Filtering Globally ProcedureProcedure bpdufilter enable disableEnabling BPDU Filtering on Specified Interfaces bpdufilterProcedure loopguard defaultEnabling Loop Guard Globally Enabling Loop Guard or Root Guard on Specified InterfacesCommand or Action Verifying STP Extension Configurationguard loop root none ProcedureOL-26590-01 Configuring STP Extensions Verifying STP Extension ConfigurationConfiguring Interface LLDP Commands, page Configuring LLDPConfiguring Global LLDP Commands Configuring Global LLDP Commands, pageStep 1 switch# configure terminal holdtime reinit timerProcedure Command or ActionCommand or Action Configuring Interface LLDP Commandstransmit Procedureswitch# show lldp timers LLDP Timers This example shows how to display LLDP timer informationThis example shows how to display LLDP counters Configuring LLDP Configuring Interface LLDP CommandsInformation About MAC Addresses, page Configuring MAC Addresses, page Configuring the MAC Address TableConfiguring MAC Addresses Configuring a Static MAC AddressProcedure Configuring the Aging Time for the MAC Tableswitchconfig-# no mac-address-table static Proceduredefined in the switch Verifying the MAC Address Configurationswitchconfig# clear mac-address-table dynamic switch# show mac-address-table aging-timeVerifying the MAC Address Configuration This example shows how to display the MAC address tableThis example shows how to display the current aging time Configuring the MAC Address TableInformation About IGMP Snooping Configuring IGMP SnoopingConfiguring IGMP Snooping Parameters, page Verifying IGMP Snooping Configuration, pageFigure 18 IGMP Snooping Switch IGMPv1 and IGMPv2IGMPv3 IGMP Snooping QuerierIGMP Forwarding Configuring IGMP Snooping Parameters ParameterDescription Procedure no ip igmp snooping mrouter vpc-peer-linkno ip igmp snooping mrouter snoopingsnooping querier IP-address snooping explicit-trackingsnooping fast-leave last-member-query-intervalswitch# show ip igmp snooping querier vlan vlan-id Verifying IGMP Snooping Configurationswitch# show ip igmp snooping vlan vlan-id switch# show ip igmp snooping groups vlan vlan-id detailOL-26590-01 Configuring IGMP Snooping Verifying IGMP Snooping ConfigurationDefault Traffic Storm Settings, page Configuring Traffic Storm ControlConfiguring Traffic Storm Control, page Traffic Storm Control Example Configuration, pageFigure 19 Broadcast Suppression Traffic Storm Guidelines and LimitationsProcedure Configuring Traffic Storm Controlswitchconfig-if# storm-control broadcast multicast unicast level percentage . fractionswitch# show running-config interface Traffic Storm Control Example ConfigurationDefault Traffic Storm Settings Verifying Traffic Storm Control ConfigurationI N D E Page Page adding ports to