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Cisco Systems DSC9148D8G48PK9 manual Configuring PortChannels, Information About PortChannels

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C H A P T E R 6

Configuring PortChannels

•Information About PortChannels, page 6-1

•Prerequisites for PortChannels, page 6-12

•Guidelines and Limitations, page 6-13

•Default Settings, page 6-16

•Configuring PortChannels, page 6-17

•Verifying PortChannel Configuration, page 6-20

•Configuration Examples for F and TF PortChannels, page 6-24

Information About PortChannels

This section includes the following topics:

•PortChannels Overview, page 6-2

•E PortChannels, page 6-2

•F and TF PortChannels, page 6-3

•PortChanneling and Trunking, page 6-3

•Load Balancing, page 6-4

•PortChannel Modes, page 6-6

•PortChannel Deletion, page 6-7

•Interfaces in a PortChannel, page 6-7

•PortChannel Protocols, page 6-9

•Channel Group Creation, page 6-10

•Autocreation, page 6-11

•Manually Configured Channel Groups, page 6-12

	Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
	Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
OL-29284-01, Release 6.x		6-1
OL-29284-01, Release 6.x		6-1

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Cisco Systems DSC9148D8G48PK9 manual Configuring PortChannels, Information About PortChannels

Contents

Americas Headquarters Cisco MDS 9000 Family NX-OS Interfaces Configuration GuidePage N T E N T S TL Ports Specifying a Port Owner Configuring Fibre Channel Interfaces Information About Interface Buffers Default Settings Deleting an Interface from a PortChannel Verifying NPV Monitoring Ports in a Vsan Xii About This Guide Port Monitor Configuring Port Added information about 22aEnhancements Monitor Policy Feature Port Monitor Port Guard Three new counters for the port Monitor commandFlexAttach Monitoring Monitoring a selected port groupEnhancements Audience OrganizationChapter Title Description Boldface font Document ConventionsRelated Documentation Troubleshooting and Reference Command-Line InterfaceFibre Channel Port Rate Limiting Trunks and PortChannelsExtended Credits Port VirtualizationFlexAttach Interfaces Overview FlexAttach OL-29284-01, Release Information About Interfaces Configuring InterfacesInterface Modes Interface DescriptionPort FL PortNP Ports TL Port TE PortTF Port ST Port Auto ModeTNP Port SD PortReason Codes Administrative StatesInterface States Operational StatesAdministrative Operational Configuration Status Reason Code NoneReason Codes for Interface States Applicable Reason Code long version Description ModesReason Codes for Nonoperational States Graceful Shutdown Port Administrative Speeds Frame EncapsulationAutosensing Speed LEDs Bit Error ThresholdsCisco MDS 9000 Family Switch Interface Modes Beacon LEDsSFP Transmitter Types Extended transmitters assigned to Cisco-supported SFPsSFP Transmitter Acronym Definitions Supported TL Port Translations TL PortsCWDM-1590 CWDM-1610 C1590 C1610 Translation from Translation to ExamplePort Guard TL Port Alpa CachesThreshold Interval Rising Falling Counter Type Seconds Event Port MonitorRising Threshold Local SwitchingPort Monitor Port Guard Port Group MonitorManagement Interfaces Slow Drain Device Detection and Congestion AvoidanceVsan Interfaces Generation 1 Interface Configuration GuidelinesPrerequisites for Interfaces Guidelines and LimitationsVsan Interface Configuration Guidelines Private Loop Configuration GuidelinesParameters Default Default SettingsConfiguring Interfaces 7lists the default settings for interface parametersCommand Purpose Configuring Fibre Channel InterfacesConfiguring Interface Modes Setting the Interface Administrative StateDefault unless user configured Configuring System Default Port Mode FSets the administrative mode of Fibre Channel ports to Mode F if applicableConfiguring 10-Gbps FC Mode Configuring ISL between Two SwitchesConfiguring Port Administrative Speeds Configuring the Interface Description Configuring Port Speed GroupSpecifying a Port Owner Configuring Beacon ModeEnters configuration mode Interface configuration submodeConfiguring Switch Port Attribute Default Values Disabling Bit Error ThresholdClearing the Alpa Cache Configuring TL PortsConfigures manual entries into the Alpa cache Manually Inserting Entries into the Alpa CacheConfiguring Port Guard Disables port monitoring Configuring Port MonitorTo enable port monitor, follow these steps Enables default port monitoringConfiguring a Port Monitor Policy Reverts to the default policy for Tx performance Specifies the delta protocol error poll intervalSpecifies the delta signal loss poll interval Reverts to the default policy for sync lossConfiguring a Port Monitor Port Guard Configuring Port Group MonitorActivating a Port Monitor Policy Enabling Port Group Monitor Configuring a Port Group Monitor PolicyTurning Off the Monitoring of Specific Counter Reverting to the Default Policy for a Specific CounterActivating a Port Group Monitor Policy Configuring Management InterfacesCreating Vsan Interfaces Configuring Congestion Frame Timeout Value Configuring Stuck Frame Timeout ValueConfiguring No-Credit Timeout Value Specifies the default no-credit timeout value port Configuring Credit Loss Recovery Threshold and ActionSpecifies the no-credit timeout value and port Mode for the switchConfiguring Interfaces Verifying Interfaces Configuration Verifying Interfaces ConfigurationDiscards, 0 errors Displaying Interface InformationExample 2-3 Displays All Interfaces Example 2-4 Displays Multiple, Specified Interfaces Interface fc1/1 5 , fc2/5Interface fc3/13 , fc3/16 Switch# show interface fc2/2 fc2/2 is trunking Example 2-5 Displays a Specific InterfaceFrames/sec Switch# show interface description Switch# show interface briefExample 2-6 Displays Port Description Example 2-8 Displays Interface Counters Switch# show interface counters fc3/1Example 2-9 Displays Interface Counters in Brief Format Switch# show interface counters briefExample 2-10 Displays Transceiver Information Switch# show running-configSystem default switchport mode F interface fc4/1 Switch# show running-config interface fc1/1Switch# show tlport list Displaying TL Port InformationExample 2-17 Displays the TL Ports in All VSANs Displaying Port Monitor Status and Policies Displaying the Alpa Cache ContentsPort-monitor active Switch# show port-monitorDisplaying Port Group Monitor Status and Policies Switch# show port-group-monitor statusPgm2 Switch# show port-group-monitorDefault Pgm1Displaying Management Interface Configuration Switch# show interface mgmt 0 mgmt0 is upDisplaying Vsan Interface Information OL-29284-01, Release Information About Fibre Channel Interfaces Generations of Modules and SwitchesAny-to-any connectivity Generation 3 Fabric SwitchPart Number Product Name and Description Backplane crossbar bandwidthProduct Name Generation 2 Fabric SwitchesPort Groups MaximumGeneration 3 Modules Generation 3 Fabric SwitchesDS-C9148-K9 Port 8-Gbps Cisco MDS Fabric switch Part Number Description Per Port Group GbpsPort Rate Modes Supports Default Speed Product Name Mode and RateSwitches Auto Gbps Auto with 4-Gbps maximum Dedicated Rate ModePart Number Description Mode Mode on All Ports Configured Speed Reserved BandwidthAuto Gbps Auto with 2-Gbps maximum Shared Rate ModeModules Dedicated Rate Mode Configurations for the 8-Gbps ModulesNegotiates to a maximum speed of 8 Gbps Port SpeedDynamic Bandwidth Management Negotiates to a maximum speed of 4 GbpsOversubscription Ratio Restrictions Out-of-Service InterfacesBandwidth Allocation for Oversubscribed Interfaces Switch# show port-resources module 8 ModuleSwitch# show port-resources module Fc5/12 Shared Port-Group Total bandwidth is 32.4 Gbps Fc5/31 Buffers Gbps Upgrade or Downgrade Scenario Switch# show module 2 bandwidth-fairnessBandwidth Fairness Guidelines and Limitations Local Switching Limitations Switch# show port index-allocationPort Index Limitations Port Index Requirements for Generation 1 Modules Switch# show moduleNumber of Port Indexes Required Generation 1 Module Supervisor-1 Module Supervisor-2 ModulePortChannel Limitations PortChannels have the following restrictionsShow port index-allocation startup Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide PortChannel Configuration and Addition Results PortChannelNew Member Members PortChannel Type Addition Type Result If resources are not available Shared Dedicated Default Port 4-Gbps Port 10-Gbps Parameter Switching ModuleSpeed mode Auto Auto1 Rate mode Shared AutoConfiguring Fibre Channel Interfaces Port mode BBcredit buffers14 Default Generation 4 Interface Parameters Configure the rate mode dedicated or shared Configure the port modeConfigure the rate mode dedicated or shared to use Task Flow for Configuring 4-Port 10-Gbps Module Interfaces Task Flow for Configuring 12-Port 4-Gbps Module InterfacesConfiguring Port Speed Switch# show interface fc 9/1 fc9/1 is up Configuring Rate ModePort-resources command to Displaying the Rate Mode Configuration for InterfacesSwitch# show port-resource module 4 Module Fc4/1232 8.0 shared Port-Group Total bandwidth is 12.8 Gbps Switch# show port-resources module 7 Module Fc7/13 Configuring Local Switching Disabling Restrictions on Oversubscription Ratios Buffers Gbps Fc2/1 Shared Fc2/2 Fc2/3 Shut down Switch# show running-config include oversubscription-limitSwitch# copy running-config startup-config Enabling Restrictions on Oversubscription RatiosEnabling Bandwidth Fairness Selects the interface and enters interface Taking Interfaces Out of ServiceConfiguration submode Disabling Bandwidth FairnessReleasing Shared Resources in a Port Group Disables the interfaceTakes the interface out of service Fc9/2 out-of-serviceDisabling ACL Adjacency Sharing for System Image Downgrade Verifying Fibre Channel Interfaces ConfigurationSwitch# show interface fc 9/1 capabilities Switch# show interface fc 4/1 capabilitiesDisplaying Interface Capabilities Displaying SFP Diagnostic Information Configuration Examples for Fibre Channel InterfacesSelect the interfaces fc 4/3 through fc 4/4 Configuration Example for 48-Port 8-Gbps Module InterfacesConfiguration Example for 24-Port 8-Gbps Module Interfaces Enable the interfaces and return to configuration modeSelect the interfaces fc 3/2 through fc 3/3 Disable the interfaces and take them out of serviceReturn to configuration mode Select interfaces fc 3/1Select the interfaces fc 4/1 through fc 4/6 Configuration Example for 48-Port 4-Gbps Module InterfacesSwitchconfig# interface fc 4/2 Select the interfaces fc 4/2 through fc 4/10Configuration Example for 24-Port 4-Gbps Module Interfaces Select the interfaces fc 4/7 through fc 4/10Select the interfaces fc 3/4 through fc 3/6 OL-29284-01, Release Buffer-to-Buffer Credits Information About Interface BuffersBuffer Pools Performance BuffersTotal BB credit buffers 189047 BBCredit Buffers for Switching Modules Fx Port Shared Rate ModeBBCredit Buffers Per Port Gbps Speed BBCredit Buffer AllocationPort 8-Gbps Switching Module BBCredit Buffer Allocation Default BBcredit buffers 250 Maximum BBcredit buffers 500Ports 1 through Ports 13 through 6000 Default BBcredit buffers 500 Maximum BBcredit buffers24-Port 8-Gbps Switching Module BBCredit Buffer Allocation Total Number of BBCredit Buffers per Module4/44-Port 8-Gbps Switching Module BBCredit Buffer Allocation Three ports with dedicated rate mode and 4-Gbps speedDedicated Rate Mode 48-Port 4-Gbps Switching Module BBCredit Buffer AllocationGbps Speed Gbps Port 4-Gbps Fibre Channel Module BBCredit Buffers 24-Port 4-Gbps Switching Module BBCredit Buffer AllocationPort 4-Gbps Switching Module BBCredit Buffers 12-Port 4-Gbps Switching Module BBCredit Buffer AllocationGbps Speed BBCredit Buffer Allocation Type ISL Fx Port ISL Port Port 10-Gbps Switching Module BBCredit Buffers4-Port 10-Gbps Switching Module BBCredit Buffer Allocation Gbps Speed BBCredit Buffer Allocation TypePort 8-Gbps Fabric Switch BBCredit Buffer Allocation BBCredit Buffers for Fabric SwitchesCisco MDS 9148 Fabric Switch BBCredit Buffers Cisco MDS 9134 Fabric Switch BBCredit BuffersExtended BBCredits Cisco MDS 9124 Fabric Switch BBCredit BuffersUser-configurable BBcredit buffers 4509 250 MDS 9124 Fabric Switch BBCredit Buffer Allocation DefaultsPort Group Support for the Extended BBCredits Feature Extended BBcredits on Generation 1 Switching ModulesOL-29284-01, Release Buffer-to-Buffer State Change Number Buffer-to-Buffer Credit RecoveryConfiguring Interface Buffers Configuring Buffer-to-Buffer CreditsReceive Data Field Size Configuring Performance Buffers Configuring Extended BBcredits Enabling Buffer-to-Buffer Credit Recovery Configuring Receive Data Field SizeEnabling the Buffer-to-Buffer State Change Number Bytes and the range is from 256 to 2112 bytes Verifying BBCredit ConfigurationInterface to 2000 bytes. The default is Reduces the data field size for the selectedCisco MDS 9000 Family NX-OS Interfaces Configuration Guide Trunking E Ports Information About TrunkingTrunking F Ports Link Number Link Description1a and 1b Port trunk with N port Port trunk with NP port PortChannnel with NP port Trunking NP port with third-party core switch F portKey Concepts Trunking ProtocolsPort Type Core Switch NPV Switch Trunking State Link Mode Trunk Link DefaultYour Trunk Mode Configuration Port Type Switch Trunking State Port ModeVsan and VF-ID Reservations Trunk-Allowed Vsan Lists and VFIDsAre General Guidelines and Limitations Operational and Allowed Vsan ConfigurationDifference Between TE Ports and TF-TNP Ports Upgrade and Downgrade LimitationsSwitchconfig-if#switchport trunk allowed vsan Switch# show interface fc2/15W7# show interface fc1/13 Sw7# show interface fc1/13Vsan Mismatch Trunking Misconfiguration ExamplesEnabling the Cisco Trunking and Channeling Protocols Configuring TrunkingConfiguring Trunk Mode Configuring an Allowed-Active List of VSANsEnabling the F Port Trunking and Channeling Protocol Verifying Trunking Configuration Configure the port mode to NP on the NPV switch Configuration Example for F Port TrunkingEnable Npiv on the MDS core switch Configure the trunk mode to on on the MDS core switchSwitchconfig# copy running-config startup-config Save the configurationOL-29284-01, Release Information About PortChannels Configuring PortChannelsPortChannels Overview PortChannelsPortChannel Flexibility TF PortChannels PortChanneling and TrunkingTrunking Only PortChanneling and Trunking Load BalancingSID1 and DID1-Based Load Balancing SID1, DID1, and Exchange-Based Load Balancing PortChannel ModesInterfaces in a PortChannel On Mode Active ModeChannel Group Configuration Differences PortChannel DeletionCompatibility Check Interface Addition to a PortChannelPortChannel Protocols Forcing an Interface AdditionInterface Deletion from a PortChannel Autocreating Channel Groups Channel Group CreationAutocreation User-Configured Channel Group Autocreated Channel GroupPrerequisites for PortChannels Manually Configured Channel GroupsConfiguring PortChannels Guidelines and Limitations TF PortChannel Limitations Generation 1 PortChannel LimitationsValid and Invalid PortChannel Examples 7provides examples of valid PortChannel configurations3lists the default settings for PortChannels Misconfigured ConfigurationsDefault PortChannel Parameters Default on mode Configuring PortChannelsConfiguring the PortChannel Mode Configures the specified PortChannel 1 usingAdding an Interface to a PortChannel Deleting PortChannelsDeleting an Interface from a PortChannel Forcing an Interface AdditionVerifying PortChannel Configuration Enabling and Configuring AutocreationConverting to Manually Configured Channel Groups Port-channel database Switch# show port-channel summarySwitch# show port-channel database port-channel Example 6-1 Displays the PortChannel SummaryExample 6-5 Displays the Consistency Status with Details Switch# show port-channel consistencySwitch# show port-channel consistency detail Example 6-4 Displays the Consistency Status without DetailsExample 6-9 Displays the Specified PortChannel Interface Example 6-6 Displays the PortChannel UsageExample 6-7 Displays the PortChannel Compatibility Example 6-8 Displays Autocreated PortChannelsExample 6-10 Displays the PortChannel Summary Configuration Examples for F and TF PortChannelsCreate the PortChannel on the MDS core switch Create the PortChannel on the NPV switchSwitchconfig# interface port-channel Create the PortChannel in dedicated mode on the NPV switchCisco MDS 9000 Family NX-OS Interfaces Configuration Guide NPV Overview Configuring N Port VirtualizationPort Identifier Virtualization Port VirtualizationNpiv Example Cisco NPV Fabric Configuration NPV Mode NP Ports NP LinksInternal Flogi Parameters Default Port Numbers Parameter Derived FromInternal Flogi Parameters Traffic Map NPV CFS Distribution over IPNPV Traffic Management AutoMultiple Vsan Support DisruptiveNPV Guidelines and Requirements NPV Traffic Management Guidelines Dpvm Configuration GuidelinesEnabling N Port Identifier Virtualization Configuring N Port VirtualizationConfiguring NPV NPV and Port Security Configuration GuidelinesDisables Npiv mode on the NPV core switch To configure NPV using the CLI, perform the following tasksOn the NPV core switch, enters configuration Enables Npiv mode on the NPV core switchConfiguring NPV Traffic Management Enabling the Global Policy for Disruptive Load Balancing Verifying NPV ConfigurationSwitch# show fcns database Switch# show fcns database detailVerifying NPV Switch# show npv flogi-table Switch# show npv internal info traffic-mapVerifying NPV Traffic Management OL-29284-01, Release FlexAttach Virtual pWWN Information About FlexAttach Virtual pWWNFlexAttach Virtual pWWN CFS Distribution SAN Device Virtualization SDV FlexAttach VirtualizationDifference Between SDV and FlexAttach Virtualization Configuring FlexAttach Virtual pWWN Security Settings for FlexAttach Virtual pWWNAutomatically Assigning FlexAttach Virtual pWWN Mapping pWWN to Virtual pWWN Manually Assigning FlexAttach Virtual pWWNTo map pWWN to virtual pWWN, perform this task Verifying FlexAttach Virtual pWWN ConfigurationCommits the configuration Specified virtual pWWN and the real pWWN must not be loggedError Description Workaround Monitoring FlexAttach Virtual pWWNVerifying the End Device Error Description Workaround OL-29284-01, Release Information About Port Tracking Configuring Port TrackingDefault Port Tracking Parameters 1lists the default settings for port tracking parametersConfiguring Port Tracking Information About Configuring Linked PortsEnabling Port Tracking Information About Tracking Multiple Ports Binding a Tracked Port OperationallyTracking Multiple Ports Information About Monitoring Ports in a VsanMonitoring Ports in a Vsan Linked port Displaying Port Tracking InformationInformation AboutForceful Shutdown Forcefully Shutting Down a Tracked PortSwitch# show interface fc1/1 Switch# show interface port-channelPort linked to interface fc1/1 Switch# show interface fc 1/5 Example 9-4 Displays a Forced Shutdown ConfigurationBandwidth fairness Default settings Example configurations Port 10-Gbps switching modulesAsterisk First operational port IN-2 IN-3 Deleting from PortChannelsMPS-14/2 modules Configuring extended BBcredits Configuring descriptionsIN-5 IN-6 TL ports Alpa caches Configuring Trunk mode Administrative default ConfiguringStatus Trunk ports Displaying information IN-8

Configuring PortChannels

Information About PortChannels

OL-29284-01, Release 6.x