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Cisco Systems DSC9148D8G48PK9 manual Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide

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Chapter 4 Configuring Interface Buffers

Verifying BB_Credit Configuration

Transmit B2B Credit is 0 Receive B2B Credit is 12

Receive B2B Credit performance buffers is 48 12 receive B2B credit remaining

0 transmit B2B credit remaining

	Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
4-26	OL-29284-01, Release 6.x

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Cisco Systems DSC9148D8G48PK9 manual Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide

Contents

Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide Americas HeadquartersPage 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 Three new counters for the port Monitor command Port Monitor Configuring Port Added information about 22aEnhancements Monitor Policy Feature Port Monitor Port Guard About This GuideMonitoring Monitoring a selected port group FlexAttachEnhancements Organization AudienceChapter Title Description Document Conventions Boldface fontRelated Documentation Command-Line Interface Troubleshooting and ReferenceTrunks and PortChannels Fibre Channel Port Rate LimitingPort Virtualization Extended CreditsFlexAttach Interfaces Overview FlexAttach OL-29284-01, Release Configuring Interfaces Information About InterfacesInterface Description Interface ModesFL Port PortNP Ports TE Port TL PortTF Port SD Port Auto ModeTNP Port ST PortOperational States Administrative StatesInterface States Reason CodesNone Administrative Operational Configuration Status Reason CodeReason Codes for Interface States Reason Code long version Description Modes ApplicableReason Codes for Nonoperational States Graceful Shutdown Frame Encapsulation Port Administrative SpeedsAutosensing Beacon LEDs Bit Error ThresholdsCisco MDS 9000 Family Switch Interface Modes Speed LEDsExtended transmitters assigned to Cisco-supported SFPs SFP Transmitter TypesSFP Transmitter Acronym Definitions Translation from Translation to Example TL PortsCWDM-1590 CWDM-1610 C1590 C1610 Supported TL Port TranslationsTL Port Alpa Caches Port GuardPort Monitor Threshold Interval Rising Falling Counter Type Seconds EventPort Group Monitor Local SwitchingPort Monitor Port Guard Rising ThresholdSlow Drain Device Detection and Congestion Avoidance Management InterfacesGuidelines and Limitations Generation 1 Interface Configuration GuidelinesPrerequisites for Interfaces Vsan InterfacesPrivate Loop Configuration Guidelines Vsan Interface Configuration Guidelines7lists the default settings for interface parameters Default SettingsConfiguring Interfaces Parameters DefaultConfiguring Fibre Channel Interfaces Command PurposeSetting the Interface Administrative State Configuring Interface ModesMode F if applicable Configuring System Default Port Mode FSets the administrative mode of Fibre Channel ports to Default unless user configuredConfiguring ISL between Two Switches Configuring 10-Gbps FC ModeConfiguring Port Administrative Speeds Configuring Port Speed Group Configuring the Interface DescriptionInterface configuration submode Configuring Beacon ModeEnters configuration mode Specifying a Port OwnerDisabling Bit Error Threshold Configuring Switch Port Attribute Default ValuesManually Inserting Entries into the Alpa Cache Configuring TL PortsConfigures manual entries into the Alpa cache Clearing the Alpa CacheConfiguring Port Guard Enables default port monitoring Configuring Port MonitorTo enable port monitor, follow these steps Disables port monitoringConfiguring a Port Monitor Policy Reverts to the default policy for sync loss Specifies the delta protocol error poll intervalSpecifies the delta signal loss poll interval Reverts to the default policy for Tx performanceConfiguring Port Group Monitor Configuring a Port Monitor Port GuardActivating a Port Monitor Policy Configuring a Port Group Monitor Policy Enabling Port Group MonitorReverting to the Default Policy for a Specific Counter Turning Off the Monitoring of Specific CounterConfiguring Management Interfaces Activating a Port Group Monitor PolicyCreating Vsan Interfaces Configuring Stuck Frame Timeout Value Configuring Congestion Frame Timeout ValueConfiguring No-Credit Timeout Value Mode for the switch Configuring Credit Loss Recovery Threshold and ActionSpecifies the no-credit timeout value and port Specifies the default no-credit timeout value portVerifying Interfaces Configuration Configuring Interfaces Verifying Interfaces ConfigurationDisplaying Interface Information Discards, 0 errorsExample 2-3 Displays All Interfaces Interface fc1/1 5 , fc2/5 Example 2-4 Displays Multiple, Specified InterfacesInterface fc3/13 , fc3/16 Example 2-5 Displays a Specific Interface Switch# show interface fc2/2 fc2/2 is trunkingFrames/sec Switch# show interface brief Switch# show interface descriptionExample 2-6 Displays Port Description Switch# show interface counters fc3/1 Example 2-8 Displays Interface CountersSwitch# show interface counters brief Example 2-9 Displays Interface Counters in Brief FormatSwitch# show running-config Example 2-10 Displays Transceiver InformationSwitch# show running-config interface fc1/1 System default switchport mode F interface fc4/1Displaying TL Port Information Switch# show tlport listExample 2-17 Displays the TL Ports in All VSANs Displaying the Alpa Cache Contents Displaying Port Monitor Status and PoliciesSwitch# show port-monitor Port-monitor activeSwitch# show port-group-monitor status Displaying Port Group Monitor Status and PoliciesPgm1 Switch# show port-group-monitorDefault Pgm2Switch# show interface mgmt 0 mgmt0 is up Displaying Management Interface ConfigurationDisplaying Vsan Interface Information OL-29284-01, Release Generations of Modules and Switches Information About Fibre Channel InterfacesBackplane crossbar bandwidth Generation 3 Fabric SwitchPart Number Product Name and Description Any-to-any connectivityMaximum Generation 2 Fabric SwitchesPort Groups Product NamePart Number Description Per Port Group Gbps Generation 3 Fabric SwitchesDS-C9148-K9 Port 8-Gbps Cisco MDS Fabric switch Generation 3 ModulesPort Rate Modes Mode and Rate Supports Default Speed Product NameSwitches Configured Speed Reserved Bandwidth Dedicated Rate ModePart Number Description Mode Mode on All Ports Auto Gbps Auto with 4-Gbps maximumShared Rate Mode Auto Gbps Auto with 2-Gbps maximumDedicated Rate Mode Configurations for the 8-Gbps Modules ModulesNegotiates to a maximum speed of 4 Gbps Port SpeedDynamic Bandwidth Management Negotiates to a maximum speed of 8 GbpsOut-of-Service Interfaces Oversubscription Ratio RestrictionsSwitch# show port-resources module 8 Module Bandwidth Allocation for Oversubscribed InterfacesSwitch# show port-resources module Fc5/12 Shared Port-Group Total bandwidth is 32.4 Gbps Fc5/31 Buffers Gbps Switch# show module 2 bandwidth-fairness Upgrade or Downgrade ScenarioBandwidth Fairness Guidelines and Limitations Switch# show port index-allocation Local Switching LimitationsPort Index Limitations Generation 1 Module Supervisor-1 Module Supervisor-2 Module Switch# show moduleNumber of Port Indexes Required Port Index Requirements for Generation 1 ModulesPortChannels have the following restrictions PortChannel LimitationsShow port index-allocation startup Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide PortChannel PortChannel Configuration and Addition ResultsNew Member Members PortChannel Type Addition Type Result If resources are not available Auto Default Port 4-Gbps Port 10-Gbps Parameter Switching ModuleSpeed mode Auto Auto1 Rate mode Shared Shared DedicatedPort mode BBcredit buffers Configuring Fibre Channel Interfaces14 Default Generation 4 Interface Parameters Configure the port mode Configure the rate mode dedicated or sharedConfigure the rate mode dedicated or shared to use Task Flow for Configuring 12-Port 4-Gbps Module Interfaces Task Flow for Configuring 4-Port 10-Gbps Module InterfacesConfiguring Port Speed Configuring Rate Mode Switch# show interface fc 9/1 fc9/1 is upDisplaying the Rate Mode Configuration for Interfaces Port-resources command toSwitch# 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 Enabling Restrictions on Oversubscription Ratios Switch# show running-config include oversubscription-limitSwitch# copy running-config startup-config Shut downEnabling Bandwidth Fairness Disabling Bandwidth Fairness Taking Interfaces Out of ServiceConfiguration submode Selects the interface and enters interfaceFc9/2 out-of-service Disables the interfaceTakes the interface out of service Releasing Shared Resources in a Port GroupVerifying Fibre Channel Interfaces Configuration Disabling ACL Adjacency Sharing for System Image DowngradeSwitch# show interface fc 4/1 capabilities Switch# show interface fc 9/1 capabilitiesDisplaying Interface Capabilities Configuration Examples for Fibre Channel Interfaces Displaying SFP Diagnostic InformationEnable the interfaces and return to configuration mode Configuration Example for 48-Port 8-Gbps Module InterfacesConfiguration Example for 24-Port 8-Gbps Module Interfaces Select the interfaces fc 4/3 through fc 4/4Select interfaces fc 3/1 Disable the interfaces and take them out of serviceReturn to configuration mode Select the interfaces fc 3/2 through fc 3/3Select the interfaces fc 4/2 through fc 4/10 Configuration Example for 48-Port 4-Gbps Module InterfacesSwitchconfig# interface fc 4/2 Select the interfaces fc 4/1 through fc 4/6Select the interfaces fc 4/7 through fc 4/10 Configuration Example for 24-Port 4-Gbps Module InterfacesSelect the interfaces fc 3/4 through fc 3/6 OL-29284-01, Release Information About Interface Buffers Buffer-to-Buffer CreditsPerformance Buffers Buffer PoolsTotal BB credit buffers 189047 BBCredit Buffers for Switching Modules Gbps Speed BBCredit Buffer Allocation Shared Rate ModeBBCredit Buffers Per Port Fx PortDefault BBcredit buffers 250 Maximum BBcredit buffers 500 Port 8-Gbps Switching Module BBCredit Buffer AllocationTotal Number of BBCredit Buffers per Module Default BBcredit buffers 500 Maximum BBcredit buffers24-Port 8-Gbps Switching Module BBCredit Buffer Allocation Ports 1 through Ports 13 through 6000Three ports with dedicated rate mode and 4-Gbps speed 4/44-Port 8-Gbps Switching Module BBCredit Buffer Allocation48-Port 4-Gbps Switching Module BBCredit Buffer Allocation Dedicated Rate ModeGbps Speed Gbps 24-Port 4-Gbps Switching Module BBCredit Buffer Allocation Port 4-Gbps Fibre Channel Module BBCredit Buffers12-Port 4-Gbps Switching Module BBCredit Buffer Allocation Port 4-Gbps Switching Module BBCredit BuffersGbps Speed BBCredit Buffer Allocation Type ISL Fx Port ISL Gbps Speed BBCredit Buffer Allocation Type Port 10-Gbps Switching Module BBCredit Buffers4-Port 10-Gbps Switching Module BBCredit Buffer Allocation PortCisco MDS 9134 Fabric Switch BBCredit Buffers BBCredit Buffers for Fabric SwitchesCisco MDS 9148 Fabric Switch BBCredit Buffers Port 8-Gbps Fabric Switch BBCredit Buffer AllocationMDS 9124 Fabric Switch BBCredit Buffer Allocation Defaults Cisco MDS 9124 Fabric Switch BBCredit BuffersUser-configurable BBcredit buffers 4509 250 Extended BBCreditsExtended BBcredits on Generation 1 Switching Modules Port Group Support for the Extended BBCredits FeatureOL-29284-01, Release Buffer-to-Buffer Credit Recovery Buffer-to-Buffer State Change NumberConfiguring Buffer-to-Buffer Credits Configuring Interface BuffersReceive Data Field Size Configuring Performance Buffers Configuring Extended BBcredits Configuring Receive Data Field Size Enabling Buffer-to-Buffer Credit RecoveryEnabling the Buffer-to-Buffer State Change Number Reduces the data field size for the selected Verifying BBCredit ConfigurationInterface to 2000 bytes. The default is Bytes and the range is from 256 to 2112 bytesCisco MDS 9000 Family NX-OS Interfaces Configuration Guide Information About Trunking Trunking E PortsLink Number Link Description Trunking F Ports1a and 1b Port trunk with N port Port trunk with NP port Trunking Protocols Trunking NP port with third-party core switch F portKey Concepts PortChannnel with NP portPort Type Switch Trunking State Port Mode Trunk Link DefaultYour Trunk Mode Configuration Port Type Core Switch NPV Switch Trunking State Link ModeTrunk-Allowed Vsan Lists and VFIDs Vsan and VF-ID ReservationsAre Operational and Allowed Vsan Configuration General Guidelines and LimitationsSwitch# show interface fc2/15 Upgrade and Downgrade LimitationsSwitchconfig-if#switchport trunk allowed vsan Difference Between TE Ports and TF-TNP PortsSw7# show interface fc1/13 W7# show interface fc1/13Trunking Misconfiguration Examples Vsan MismatchConfiguring Trunking Enabling the Cisco Trunking and Channeling ProtocolsConfiguring an Allowed-Active List of VSANs Configuring Trunk ModeEnabling the F Port Trunking and Channeling Protocol Verifying Trunking Configuration Configure the trunk mode to on on the MDS core switch Configuration Example for F Port TrunkingEnable Npiv on the MDS core switch Configure the port mode to NP on the NPV switchSave the configuration Switchconfig# copy running-config startup-configOL-29284-01, Release Configuring PortChannels Information About PortChannelsPortChannels PortChannels OverviewPortChannel Flexibility PortChanneling and Trunking TF PortChannelsTrunking Only Load Balancing PortChanneling and TrunkingSID1 and DID1-Based Load Balancing PortChannel Modes SID1, DID1, and Exchange-Based Load BalancingPortChannel Deletion On Mode Active ModeChannel Group Configuration Differences Interfaces in a PortChannelInterface Addition to a PortChannel Compatibility CheckForcing an Interface Addition PortChannel ProtocolsInterface Deletion from a PortChannel Channel Group Creation Autocreating Channel GroupsUser-Configured Channel Group Autocreated Channel Group AutocreationManually Configured Channel Groups Prerequisites for PortChannelsConfiguring PortChannels Guidelines and Limitations Generation 1 PortChannel Limitations TF PortChannel Limitations7provides examples of valid PortChannel configurations Valid and Invalid PortChannel ExamplesMisconfigured Configurations 3lists the default settings for PortChannelsDefault PortChannel Parameters Configures the specified PortChannel 1 using Configuring PortChannelsConfiguring the PortChannel Mode Default on modeDeleting PortChannels Adding an Interface to a PortChannelForcing an Interface Addition Deleting an Interface from a PortChannelEnabling and Configuring Autocreation Verifying PortChannel ConfigurationConverting to Manually Configured Channel Groups Example 6-1 Displays the PortChannel Summary Switch# show port-channel summarySwitch# show port-channel database port-channel Port-channel databaseExample 6-4 Displays the Consistency Status without Details Switch# show port-channel consistencySwitch# show port-channel consistency detail Example 6-5 Displays the Consistency Status with DetailsExample 6-8 Displays Autocreated PortChannels Example 6-6 Displays the PortChannel UsageExample 6-7 Displays the PortChannel Compatibility Example 6-9 Displays the Specified PortChannel InterfaceCreate the PortChannel on the NPV switch Configuration Examples for F and TF PortChannelsCreate the PortChannel on the MDS core switch Example 6-10 Displays the PortChannel SummaryCreate the PortChannel in dedicated mode on the NPV switch Switchconfig# interface port-channelCisco MDS 9000 Family NX-OS Interfaces Configuration Guide Configuring N Port Virtualization NPV OverviewPort Virtualization Port Identifier VirtualizationNpiv Example Cisco NPV Fabric Configuration NPV Mode NP Links NP PortsInternal Flogi Parameters Parameter Derived From Default Port NumbersInternal Flogi Parameters Auto NPV CFS Distribution over IPNPV Traffic Management Traffic MapDisruptive Multiple Vsan SupportNPV Guidelines and Requirements Dpvm Configuration Guidelines NPV Traffic Management GuidelinesNPV and Port Security Configuration Guidelines Configuring N Port VirtualizationConfiguring NPV Enabling N Port Identifier VirtualizationEnables Npiv mode on the NPV core switch To configure NPV using the CLI, perform the following tasksOn the NPV core switch, enters configuration Disables Npiv mode on the NPV core switchConfiguring NPV Traffic Management Verifying NPV Configuration Enabling the Global Policy for Disruptive Load BalancingSwitch# show fcns database detail Switch# show fcns databaseVerifying NPV Switch# show npv internal info traffic-map Switch# show npv flogi-tableVerifying NPV Traffic Management OL-29284-01, Release Information About FlexAttach Virtual pWWN FlexAttach Virtual pWWNSAN Device Virtualization SDV FlexAttach Virtualization FlexAttach Virtual pWWN CFS DistributionDifference Between SDV and FlexAttach Virtualization Security Settings for FlexAttach Virtual pWWN Configuring FlexAttach Virtual pWWNAutomatically Assigning FlexAttach Virtual pWWN Manually Assigning FlexAttach Virtual pWWN Mapping pWWN to Virtual pWWNSpecified virtual pWWN and the real pWWN must not be logged Verifying FlexAttach Virtual pWWN ConfigurationCommits the configuration To map pWWN to virtual pWWN, perform this taskMonitoring FlexAttach Virtual pWWN Error Description WorkaroundVerifying the End Device Error Description Workaround OL-29284-01, Release Configuring Port Tracking Information About Port Tracking1lists the default settings for port tracking parameters Default Port Tracking ParametersInformation About Configuring Linked Ports Configuring Port TrackingEnabling Port Tracking Binding a Tracked Port Operationally Information About Tracking Multiple PortsInformation About Monitoring Ports in a Vsan Tracking Multiple PortsMonitoring Ports in a Vsan Forcefully Shutting Down a Tracked Port Displaying Port Tracking InformationInformation AboutForceful Shutdown Linked portSwitch# show interface port-channel Switch# show interface fc1/1Port linked to interface fc1/1 Example 9-4 Displays a Forced Shutdown Configuration Switch# show interface fc 1/5Port 10-Gbps switching modules Bandwidth fairness Default settings Example configurationsAsterisk First operational port IN-2 Deleting from PortChannels IN-3Configuring descriptions MPS-14/2 modules Configuring extended BBcreditsIN-5 IN-6 Trunk mode Administrative default Configuring TL ports Alpa caches ConfiguringStatus Trunk ports Displaying information IN-8