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Cisco Systems DSC9148D8G48PK9 manual Port Monitor

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Chapter 2 Configuring Interfaces

Information About Interfaces

The port guard feature gives the SAN administrator the ability to prevent this issue from occurring in environments that are vulnerable to these problems. The port can be configured to stay down after the first failure or after a specified number of failures in a specified time period. This allows the SAN administrator to intervene and control the recovery, avoiding any problems caused by the cycling.

Using the port guard feature, you can restrict the number of error reports and bring a malfunctioning port to down state dynamically. A port can be configured to go into error-disabled state for specific types of failures.

A general link failure caused by link-down is the superset of all other causes. The sum of the number of all other causes equals to the number of link-down link failures. This means a port is brought to down state when it reaches the maximum number of allowed link failures or the number of specific causes.

The causes of link failure can be any of the following:

•ESP trustsec-violation

•Bit-errors

•Signal loss

•Sync loss

•Link reset

•Credit loss

•Additional causes might be the following:

–Not operational (NOS).

–Too many interrupts.

–Cable is disconnected.

–Hardware recoverable errors.

–The connected device rebooted (F ports only).

–The connected linecard rebooted (ISL only).

Port Monitor

Port monitor helps to monitor the performance and the status of ports and generate alerts when problems occur. You can configure the thresholds for various counters and trigger an event when the values cross the threshold settings.

The default port monitor policy has the following threshold values:

			Threshold	Interval	% Rising		% Falling
		Counter	Type	(Seconds)	Threshold	Event	Threshold	Event

		Link Loss	Delta	60	5	4	1	4

		Sync Loss	Delta	60	5	4	1	4

		Protocol Error	Delta	60	1	4	0	4

		Signal Loss	Delta	60	5	4	1	4

		Invalid Words	Delta	60	1	4	0	4

		Invalid CRCs	Delta	60	5	4	1	4

				Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
				Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide

	OL-29284-01, Release 6.x									2-15
	OL-29284-01, Release 6.x									2-15

Image 37

Cisco Systems DSC9148D8G48PK9 manual Port Monitor, Threshold Interval Rising Falling Counter Type Seconds Event

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 Enhancements Monitor Policy Feature Port Monitor Port Guard Port Monitor Configuring Port Added information about 22aThree new counters for the port Monitor command About This GuideMonitoring Monitoring a selected port group FlexAttachEnhancements Organization AudienceChapter Title Description Boldface font Document ConventionsRelated Documentation Troubleshooting and Reference Command-Line InterfaceFibre Channel Port Rate Limiting Trunks and PortChannelsPort Virtualization Extended CreditsFlexAttach Interfaces Overview FlexAttach OL-29284-01, Release Information About Interfaces Configuring InterfacesInterface Modes Interface DescriptionFL Port PortNP Ports TE Port TL PortTF Port TNP Port Auto ModeSD Port ST PortInterface States Administrative StatesOperational 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 Cisco MDS 9000 Family Switch Interface Modes Bit Error ThresholdsBeacon LEDs Speed LEDsExtended transmitters assigned to Cisco-supported SFPs SFP Transmitter TypesSFP Transmitter Acronym Definitions CWDM-1590 CWDM-1610 C1590 C1610 TL PortsTranslation from Translation to Example Supported TL Port TranslationsPort Guard TL Port Alpa CachesThreshold Interval Rising Falling Counter Type Seconds Event Port MonitorPort Monitor Port Guard Local SwitchingPort Group Monitor Rising ThresholdManagement Interfaces Slow Drain Device Detection and Congestion AvoidancePrerequisites for Interfaces Generation 1 Interface Configuration GuidelinesGuidelines and Limitations Vsan InterfacesVsan Interface Configuration Guidelines Private Loop Configuration GuidelinesConfiguring Interfaces Default Settings7lists the default settings for interface parameters Parameters DefaultCommand Purpose Configuring Fibre Channel InterfacesConfiguring Interface Modes Setting the Interface Administrative StateSets the administrative mode of Fibre Channel ports to Configuring System Default Port Mode FMode F if applicable Default unless user configuredConfiguring 10-Gbps FC Mode Configuring ISL between Two SwitchesConfiguring Port Administrative Speeds Configuring the Interface Description Configuring Port Speed GroupEnters configuration mode Configuring Beacon ModeInterface configuration submode Specifying a Port OwnerConfiguring Switch Port Attribute Default Values Disabling Bit Error ThresholdConfigures manual entries into the Alpa cache Configuring TL PortsManually Inserting Entries into the Alpa Cache Clearing the Alpa CacheConfiguring Port Guard To enable port monitor, follow these steps Configuring Port MonitorEnables default port monitoring Disables port monitoringConfiguring a Port Monitor Policy Specifies the delta signal loss poll interval Specifies the delta protocol error poll intervalReverts to the default policy for sync loss Reverts to the default policy for Tx performanceConfiguring Port Group Monitor Configuring a Port Monitor Port GuardActivating 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 Stuck Frame Timeout Value Configuring Congestion Frame Timeout ValueConfiguring No-Credit Timeout Value Specifies the no-credit timeout value and port Configuring Credit Loss Recovery Threshold and ActionMode for the switch Specifies the default no-credit timeout value portConfiguring Interfaces Verifying Interfaces Configuration 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 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 fc1/1Displaying TL Port Information Switch# show tlport listExample 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 statusDefault Switch# show port-group-monitorPgm1 Pgm2Switch# show interface mgmt 0 mgmt0 is up Displaying Management Interface ConfigurationDisplaying Vsan Interface Information OL-29284-01, Release Information About Fibre Channel Interfaces Generations of Modules and SwitchesPart Number Product Name and Description Generation 3 Fabric SwitchBackplane crossbar bandwidth Any-to-any connectivityPort Groups Generation 2 Fabric SwitchesMaximum Product NameDS-C9148-K9 Port 8-Gbps Cisco MDS Fabric switch Generation 3 Fabric SwitchesPart Number Description Per Port Group Gbps Generation 3 ModulesPort Rate Modes Mode and Rate Supports Default Speed Product NameSwitches Part Number Description Mode Mode on All Ports Dedicated Rate ModeConfigured Speed Reserved Bandwidth Auto Gbps Auto with 4-Gbps maximumAuto Gbps Auto with 2-Gbps maximum Shared Rate ModeModules Dedicated Rate Mode Configurations for the 8-Gbps ModulesDynamic Bandwidth Management Port SpeedNegotiates to a maximum speed of 4 Gbps Negotiates to a maximum speed of 8 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 Switch# show module 2 bandwidth-fairness Upgrade or Downgrade ScenarioBandwidth Fairness Guidelines and Limitations Switch# show port index-allocation Local Switching LimitationsPort Index Limitations Number of Port Indexes Required Switch# show moduleGeneration 1 Module Supervisor-1 Module Supervisor-2 Module 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 Speed mode Auto Auto1 Rate mode Shared Default Port 4-Gbps Port 10-Gbps Parameter Switching ModuleAuto 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 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 Switch# copy running-config startup-config Switch# show running-config include oversubscription-limitEnabling Restrictions on Oversubscription Ratios Shut downEnabling Bandwidth Fairness Configuration submode Taking Interfaces Out of ServiceDisabling Bandwidth Fairness Selects the interface and enters interfaceTakes the interface out of service Disables the interfaceFc9/2 out-of-service Releasing Shared Resources in a Port GroupDisabling ACL Adjacency Sharing for System Image Downgrade Verifying Fibre Channel Interfaces ConfigurationSwitch# show interface fc 4/1 capabilities Switch# show interface fc 9/1 capabilitiesDisplaying Interface Capabilities Displaying SFP Diagnostic Information Configuration Examples for Fibre Channel InterfacesConfiguration Example for 24-Port 8-Gbps Module Interfaces Configuration Example for 48-Port 8-Gbps Module InterfacesEnable the interfaces and return to configuration mode Select the interfaces fc 4/3 through fc 4/4Return to configuration mode Disable the interfaces and take them out of serviceSelect interfaces fc 3/1 Select the interfaces fc 3/2 through fc 3/3Switchconfig# interface fc 4/2 Configuration Example for 48-Port 4-Gbps Module InterfacesSelect the interfaces fc 4/2 through fc 4/10 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 Buffer-to-Buffer Credits Information About Interface BuffersBuffer Pools Performance BuffersTotal BB credit buffers 189047 BBCredit Buffers for Switching Modules BBCredit Buffers Per Port Shared Rate ModeGbps Speed BBCredit Buffer Allocation Fx PortPort 8-Gbps Switching Module BBCredit Buffer Allocation Default BBcredit buffers 250 Maximum BBcredit buffers 50024-Port 8-Gbps Switching Module BBCredit Buffer Allocation Default BBcredit buffers 500 Maximum BBcredit buffersTotal Number of BBCredit Buffers per Module Ports 1 through Ports 13 through 60004/44-Port 8-Gbps Switching Module BBCredit Buffer Allocation Three ports with dedicated rate mode and 4-Gbps speed48-Port 4-Gbps Switching Module BBCredit Buffer Allocation Dedicated Rate ModeGbps Speed Gbps Port 4-Gbps Fibre Channel Module BBCredit Buffers 24-Port 4-Gbps Switching Module BBCredit Buffer Allocation12-Port 4-Gbps Switching Module BBCredit Buffer Allocation Port 4-Gbps Switching Module BBCredit BuffersGbps Speed BBCredit Buffer Allocation Type ISL Fx Port ISL 4-Port 10-Gbps Switching Module BBCredit Buffer Allocation Port 10-Gbps Switching Module BBCredit BuffersGbps Speed BBCredit Buffer Allocation Type PortCisco MDS 9148 Fabric Switch BBCredit Buffers BBCredit Buffers for Fabric SwitchesCisco MDS 9134 Fabric Switch BBCredit Buffers Port 8-Gbps Fabric Switch BBCredit Buffer AllocationUser-configurable BBcredit buffers 4509 250 Cisco MDS 9124 Fabric Switch BBCredit BuffersMDS 9124 Fabric Switch BBCredit Buffer Allocation Defaults Extended BBCreditsPort 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 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 Interface to 2000 bytes. The default is Verifying BBCredit ConfigurationReduces the data field size for the selected Bytes and the range is from 256 to 2112 bytesCisco MDS 9000 Family NX-OS Interfaces Configuration Guide Trunking E Ports Information About TrunkingLink Number Link Description Trunking F Ports1a and 1b Port trunk with N port Port trunk with NP port Key Concepts Trunking NP port with third-party core switch F portTrunking Protocols PortChannnel with NP portYour Trunk Mode Configuration Trunk Link DefaultPort Type Switch Trunking State Port Mode Port Type Core Switch NPV Switch Trunking State Link ModeVsan and VF-ID Reservations Trunk-Allowed Vsan Lists and VFIDsAre General Guidelines and Limitations Operational and Allowed Vsan ConfigurationSwitchconfig-if#switchport trunk allowed vsan Upgrade and Downgrade LimitationsSwitch# show interface fc2/15 Difference Between TE Ports and TF-TNP PortsW7# show interface fc1/13 Sw7# show interface fc1/13Vsan Mismatch Trunking Misconfiguration ExamplesEnabling the Cisco Trunking and Channeling Protocols Configuring TrunkingConfiguring an Allowed-Active List of VSANs Configuring Trunk ModeEnabling the F Port Trunking and Channeling Protocol Verifying Trunking Configuration Enable Npiv on the MDS core switch Configuration Example for F Port TrunkingConfigure the trunk mode to on on the MDS core switch Configure the port mode to NP on the NPV switchSwitchconfig# copy running-config startup-config Save the configurationOL-29284-01, Release Information About PortChannels Configuring PortChannelsPortChannels PortChannels OverviewPortChannel Flexibility PortChanneling and Trunking TF PortChannelsTrunking Only PortChanneling and Trunking Load BalancingSID1 and DID1-Based Load Balancing SID1, DID1, and Exchange-Based Load Balancing PortChannel ModesChannel Group Configuration Differences On Mode Active ModePortChannel Deletion Interfaces in a PortChannelCompatibility Check Interface Addition to a PortChannelForcing an Interface Addition PortChannel ProtocolsInterface 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 configurationsMisconfigured Configurations 3lists the default settings for PortChannelsDefault PortChannel Parameters Configuring the PortChannel Mode Configuring PortChannelsConfigures the specified PortChannel 1 using Default on modeAdding an Interface to a PortChannel Deleting PortChannelsDeleting an Interface from a PortChannel Forcing an Interface AdditionEnabling and Configuring Autocreation Verifying PortChannel ConfigurationConverting to Manually Configured Channel Groups Switch# show port-channel database port-channel Switch# show port-channel summaryExample 6-1 Displays the PortChannel Summary Port-channel databaseSwitch# show port-channel consistency detail Switch# show port-channel consistencyExample 6-4 Displays the Consistency Status without Details Example 6-5 Displays the Consistency Status with DetailsExample 6-7 Displays the PortChannel Compatibility Example 6-6 Displays the PortChannel UsageExample 6-8 Displays Autocreated PortChannels Example 6-9 Displays the Specified PortChannel InterfaceCreate the PortChannel on the MDS core switch Configuration Examples for F and TF PortChannelsCreate the PortChannel on the NPV switch Example 6-10 Displays the PortChannel SummarySwitchconfig# 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 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 NPV Traffic Management NPV CFS Distribution over IPAuto Traffic MapDisruptive Multiple Vsan SupportNPV Guidelines and Requirements NPV Traffic Management Guidelines Dpvm Configuration GuidelinesConfiguring NPV Configuring N Port VirtualizationNPV and Port Security Configuration Guidelines Enabling N Port Identifier VirtualizationOn the NPV core switch, enters configuration To configure NPV using the CLI, perform the following tasksEnables Npiv mode on the NPV core switch Disables Npiv mode on the NPV core switchConfiguring NPV Traffic Management Enabling the Global Policy for Disruptive Load Balancing Verifying NPV ConfigurationSwitch# 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 FlexAttach Virtual pWWN Information About 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 Mapping pWWN to Virtual pWWN Manually Assigning FlexAttach Virtual pWWNCommits the configuration Verifying FlexAttach Virtual pWWN ConfigurationSpecified virtual pWWN and the real pWWN must not be logged 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 Information About Port Tracking Configuring Port TrackingDefault Port Tracking Parameters 1lists the default settings for port tracking parametersInformation About Configuring Linked Ports Configuring Port TrackingEnabling Port Tracking Information About Tracking Multiple Ports Binding a Tracked Port OperationallyInformation About Monitoring Ports in a Vsan Tracking Multiple PortsMonitoring Ports in a Vsan Information AboutForceful Shutdown Displaying Port Tracking InformationForcefully Shutting Down a Tracked Port Linked portSwitch# show interface port-channel Switch# show interface fc1/1Port linked to interface fc1/1 Switch# show interface fc 1/5 Example 9-4 Displays a Forced Shutdown ConfigurationPort 10-Gbps switching modules Bandwidth fairness Default settings Example configurationsAsterisk First operational port IN-2 IN-3 Deleting from PortChannelsMPS-14/2 modules Configuring extended BBcredits Configuring descriptionsIN-5 IN-6 Trunk mode Administrative default Configuring TL ports Alpa caches ConfiguringStatus Trunk ports Displaying information IN-8