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Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
Page
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 22a
Enhancements Monitor Policy Feature Port Monitor Port Guard
Three new counters for the port Monitor command
FlexAttach
Monitoring Monitoring a selected port group
Enhancements
Audience
Organization
Chapter Title Description
Boldface font
Document Conventions
Related Documentation
Troubleshooting and Reference
Command-Line Interface
Fibre Channel Port Rate Limiting
Trunks and PortChannels
Extended Credits
Port Virtualization
FlexAttach
Interfaces Overview FlexAttach
OL-29284-01, Release
Information About Interfaces
Configuring Interfaces
Interface Modes
Interface Description
Port
FL Port
NP Ports
TL Port
TE Port
TF Port
ST Port
Auto Mode
TNP Port
SD Port
Reason Codes
Administrative States
Interface States
Operational States
Administrative Operational Configuration Status Reason Code
None
Reason Codes for Interface States
Applicable
Reason Code long version Description Modes
Reason Codes for Nonoperational States
Graceful Shutdown
Port Administrative Speeds
Frame Encapsulation
Autosensing
Speed LEDs
Bit Error Thresholds
Cisco MDS 9000 Family Switch Interface Modes
Beacon LEDs
SFP Transmitter Types
Extended transmitters assigned to Cisco-supported SFPs
SFP Transmitter Acronym Definitions
Supported TL Port Translations
TL Ports
CWDM-1590 CWDM-1610 C1590 C1610
Translation from Translation to Example
Port Guard
TL Port Alpa Caches
Threshold Interval Rising Falling Counter Type Seconds Event
Port Monitor
Rising Threshold
Local Switching
Port Monitor Port Guard
Port Group Monitor
Management Interfaces
Slow Drain Device Detection and Congestion Avoidance
Vsan Interfaces
Generation 1 Interface Configuration Guidelines
Prerequisites for Interfaces
Guidelines and Limitations
Vsan Interface Configuration Guidelines
Private Loop Configuration Guidelines
Parameters Default
Default Settings
Configuring Interfaces
7lists the default settings for interface parameters
Command Purpose
Configuring Fibre Channel Interfaces
Configuring Interface Modes
Setting the Interface Administrative State
Default unless user configured
Configuring System Default Port Mode F
Sets the administrative mode of Fibre Channel ports to
Mode F if applicable
Configuring 10-Gbps FC Mode
Configuring ISL between Two Switches
Configuring Port Administrative Speeds
Configuring the Interface Description
Configuring Port Speed Group
Specifying a Port Owner
Configuring Beacon Mode
Enters configuration mode
Interface configuration submode
Configuring Switch Port Attribute Default Values
Disabling Bit Error Threshold
Clearing the Alpa Cache
Configuring TL Ports
Configures manual entries into the Alpa cache
Manually Inserting Entries into the Alpa Cache
Configuring Port Guard
Disables port monitoring
Configuring Port Monitor
To enable port monitor, follow these steps
Enables default port monitoring
Configuring a Port Monitor Policy
Reverts to the default policy for Tx performance
Specifies the delta protocol error poll interval
Specifies the delta signal loss poll interval
Reverts to the default policy for sync loss
Configuring a Port Monitor Port Guard
Configuring Port Group Monitor
Activating a Port Monitor Policy
Enabling Port Group Monitor
Configuring a Port Group Monitor Policy
Turning Off the Monitoring of Specific Counter
Reverting to the Default Policy for a Specific Counter
Activating a Port Group Monitor Policy
Configuring Management Interfaces
Creating Vsan Interfaces
Configuring Congestion Frame Timeout Value
Configuring Stuck Frame Timeout Value
Configuring No-Credit Timeout Value
Specifies the default no-credit timeout value port
Configuring Credit Loss Recovery Threshold and Action
Specifies the no-credit timeout value and port
Mode for the switch
Configuring Interfaces Verifying Interfaces Configuration
Verifying Interfaces Configuration
Discards, 0 errors
Displaying Interface Information
Example 2-3 Displays All Interfaces
Example 2-4 Displays Multiple, Specified Interfaces
Interface fc1/1 5 , fc2/5
Interface fc3/13 , fc3/16
Switch# show interface fc2/2 fc2/2 is trunking
Example 2-5 Displays a Specific Interface
Frames/sec
Switch# show interface description
Switch# show interface brief
Example 2-6 Displays Port Description
Example 2-8 Displays Interface Counters
Switch# show interface counters fc3/1
Example 2-9 Displays Interface Counters in Brief Format
Switch# show interface counters brief
Example 2-10 Displays Transceiver Information
Switch# show running-config
System default switchport mode F interface fc4/1
Switch# show running-config interface fc1/1
Switch# show tlport list
Displaying TL Port Information
Example 2-17 Displays the TL Ports in All VSANs
Displaying Port Monitor Status and Policies
Displaying the Alpa Cache Contents
Port-monitor active
Switch# show port-monitor
Displaying Port Group Monitor Status and Policies
Switch# show port-group-monitor status
Pgm2
Switch# show port-group-monitor
Default
Pgm1
Displaying Management Interface Configuration
Switch# show interface mgmt 0 mgmt0 is up
Displaying Vsan Interface Information
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Information About Fibre Channel Interfaces
Generations of Modules and Switches
Any-to-any connectivity
Generation 3 Fabric Switch
Part Number Product Name and Description
Backplane crossbar bandwidth
Product Name
Generation 2 Fabric Switches
Port Groups
Maximum
Generation 3 Modules
Generation 3 Fabric Switches
DS-C9148-K9 Port 8-Gbps Cisco MDS Fabric switch
Part Number Description Per Port Group Gbps
Port Rate Modes
Supports Default Speed Product Name
Mode and Rate
Switches
Auto Gbps Auto with 4-Gbps maximum
Dedicated Rate Mode
Part Number Description Mode Mode on All Ports
Configured Speed Reserved Bandwidth
Auto Gbps Auto with 2-Gbps maximum
Shared Rate Mode
Modules
Dedicated Rate Mode Configurations for the 8-Gbps Modules
Negotiates to a maximum speed of 8 Gbps
Port Speed
Dynamic Bandwidth Management
Negotiates to a maximum speed of 4 Gbps
Oversubscription Ratio Restrictions
Out-of-Service Interfaces
Bandwidth Allocation for Oversubscribed Interfaces
Switch# show port-resources module 8 Module
Switch# 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-fairness
Bandwidth Fairness
Guidelines and Limitations
Local Switching Limitations
Switch# show port index-allocation
Port Index Limitations
Port Index Requirements for Generation 1 Modules
Switch# show module
Number of Port Indexes Required
Generation 1 Module Supervisor-1 Module Supervisor-2 Module
PortChannel Limitations
PortChannels have the following restrictions
Show port index-allocation startup
Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
PortChannel Configuration and Addition Results
PortChannel
New Member Members PortChannel Type Addition Type Result
If resources are not available
Shared Dedicated
Default Port 4-Gbps Port 10-Gbps Parameter Switching Module
Speed mode Auto Auto1 Rate mode Shared
Auto
Configuring Fibre Channel Interfaces
Port mode BBcredit buffers
14 Default Generation 4 Interface Parameters
Configure the rate mode dedicated or shared
Configure the port mode
Configure 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 Interfaces
Configuring Port Speed
Switch# show interface fc 9/1 fc9/1 is up
Configuring Rate Mode
Port-resources command to
Displaying the Rate Mode Configuration for Interfaces
Switch# 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-limit
Switch# copy running-config startup-config
Enabling Restrictions on Oversubscription Ratios
Enabling Bandwidth Fairness
Selects the interface and enters interface
Taking Interfaces Out of Service
Configuration submode
Disabling Bandwidth Fairness
Releasing Shared Resources in a Port Group
Disables the interface
Takes the interface out of service
Fc9/2 out-of-service
Disabling ACL Adjacency Sharing for System Image Downgrade
Verifying Fibre Channel Interfaces Configuration
Switch# show interface fc 9/1 capabilities
Switch# show interface fc 4/1 capabilities
Displaying Interface Capabilities
Displaying SFP Diagnostic Information
Configuration Examples for Fibre Channel Interfaces
Select the interfaces fc 4/3 through fc 4/4
Configuration Example for 48-Port 8-Gbps Module Interfaces
Configuration Example for 24-Port 8-Gbps Module Interfaces
Enable the interfaces and return to configuration mode
Select the interfaces fc 3/2 through fc 3/3
Disable the interfaces and take them out of service
Return to configuration mode
Select interfaces fc 3/1
Select the interfaces fc 4/1 through fc 4/6
Configuration Example for 48-Port 4-Gbps Module Interfaces
Switchconfig# interface fc 4/2
Select the interfaces fc 4/2 through fc 4/10
Configuration Example for 24-Port 4-Gbps Module Interfaces
Select the interfaces fc 4/7 through fc 4/10
Select the interfaces fc 3/4 through fc 3/6
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Buffer-to-Buffer Credits
Information About Interface Buffers
Buffer Pools
Performance Buffers
Total BB credit buffers
189047
BBCredit Buffers for Switching Modules
Fx Port
Shared Rate Mode
BBCredit Buffers Per Port
Gbps Speed BBCredit Buffer Allocation
Port 8-Gbps Switching Module BBCredit Buffer Allocation
Default BBcredit buffers 250 Maximum BBcredit buffers 500
Ports 1 through Ports 13 through 6000
Default BBcredit buffers 500 Maximum BBcredit buffers
24-Port 8-Gbps Switching Module BBCredit Buffer Allocation
Total Number of BBCredit Buffers per Module
4/44-Port 8-Gbps Switching Module BBCredit Buffer Allocation
Three ports with dedicated rate mode and 4-Gbps speed
Dedicated Rate Mode
48-Port 4-Gbps Switching Module BBCredit Buffer Allocation
Gbps Speed
Gbps
Port 4-Gbps Fibre Channel Module BBCredit Buffers
24-Port 4-Gbps Switching Module BBCredit Buffer Allocation
Port 4-Gbps Switching Module BBCredit Buffers
12-Port 4-Gbps Switching Module BBCredit Buffer Allocation
Gbps Speed BBCredit Buffer Allocation Type ISL Fx Port
ISL
Port
Port 10-Gbps Switching Module BBCredit Buffers
4-Port 10-Gbps Switching Module BBCredit Buffer Allocation
Gbps Speed BBCredit Buffer Allocation Type
Port 8-Gbps Fabric Switch BBCredit Buffer Allocation
BBCredit Buffers for Fabric Switches
Cisco MDS 9148 Fabric Switch BBCredit Buffers
Cisco MDS 9134 Fabric Switch BBCredit Buffers
Extended BBCredits
Cisco MDS 9124 Fabric Switch BBCredit Buffers
User-configurable BBcredit buffers 4509 250
MDS 9124 Fabric Switch BBCredit Buffer Allocation Defaults
Port Group Support for the Extended BBCredits Feature
Extended BBcredits on Generation 1 Switching Modules
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Buffer-to-Buffer State Change Number
Buffer-to-Buffer Credit Recovery
Configuring Interface Buffers
Configuring Buffer-to-Buffer Credits
Receive Data Field Size
Configuring Performance Buffers
Configuring Extended BBcredits
Enabling Buffer-to-Buffer Credit Recovery
Configuring Receive Data Field Size
Enabling the Buffer-to-Buffer State Change Number
Bytes and the range is from 256 to 2112 bytes
Verifying BBCredit Configuration
Interface to 2000 bytes. The default is
Reduces the data field size for the selected
Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
Trunking E Ports
Information About Trunking
Trunking F Ports
Link Number Link Description
1a 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 port
Key Concepts
Trunking Protocols
Port Type Core Switch NPV Switch Trunking State Link Mode
Trunk Link Default
Your Trunk Mode Configuration
Port Type Switch Trunking State Port Mode
Vsan and VF-ID Reservations
Trunk-Allowed Vsan Lists and VFIDs
Are
General Guidelines and Limitations
Operational and Allowed Vsan Configuration
Difference Between TE Ports and TF-TNP Ports
Upgrade and Downgrade Limitations
Switchconfig-if#switchport trunk allowed vsan
Switch# show interface fc2/15
W7# show interface fc1/13
Sw7# show interface fc1/13
Vsan Mismatch
Trunking Misconfiguration Examples
Enabling the Cisco Trunking and Channeling Protocols
Configuring Trunking
Configuring Trunk Mode
Configuring an Allowed-Active List of VSANs
Enabling 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 Trunking
Enable Npiv on the MDS core switch
Configure the trunk mode to on on the MDS core switch
Switchconfig# copy running-config startup-config
Save the configuration
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Information About PortChannels
Configuring PortChannels
PortChannels Overview
PortChannels
PortChannel Flexibility
TF PortChannels
PortChanneling and Trunking
Trunking Only
PortChanneling and Trunking
Load Balancing
SID1 and DID1-Based Load Balancing
SID1, DID1, and Exchange-Based Load Balancing
PortChannel Modes
Interfaces in a PortChannel
On Mode Active Mode
Channel Group Configuration Differences
PortChannel Deletion
Compatibility Check
Interface Addition to a PortChannel
PortChannel Protocols
Forcing an Interface Addition
Interface Deletion from a PortChannel
Autocreating Channel Groups
Channel Group Creation
Autocreation
User-Configured Channel Group Autocreated Channel Group
Prerequisites for PortChannels
Manually Configured Channel Groups
Configuring PortChannels Guidelines and Limitations
TF PortChannel Limitations
Generation 1 PortChannel Limitations
Valid and Invalid PortChannel Examples
7provides examples of valid PortChannel configurations
3lists the default settings for PortChannels
Misconfigured Configurations
Default PortChannel Parameters
Default on mode
Configuring PortChannels
Configuring the PortChannel Mode
Configures the specified PortChannel 1 using
Adding an Interface to a PortChannel
Deleting PortChannels
Deleting an Interface from a PortChannel
Forcing an Interface Addition
Verifying PortChannel Configuration
Enabling and Configuring Autocreation
Converting to Manually Configured Channel Groups
Port-channel database
Switch# show port-channel summary
Switch# show port-channel database port-channel
Example 6-1 Displays the PortChannel Summary
Example 6-5 Displays the Consistency Status with Details
Switch# show port-channel consistency
Switch# show port-channel consistency detail
Example 6-4 Displays the Consistency Status without Details
Example 6-9 Displays the Specified PortChannel Interface
Example 6-6 Displays the PortChannel Usage
Example 6-7 Displays the PortChannel Compatibility
Example 6-8 Displays Autocreated PortChannels
Example 6-10 Displays the PortChannel Summary
Configuration Examples for F and TF PortChannels
Create the PortChannel on the MDS core switch
Create the PortChannel on the NPV switch
Switchconfig# interface port-channel
Create the PortChannel in dedicated mode on the NPV switch
Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
NPV Overview
Configuring N Port Virtualization
Port Identifier Virtualization
Port Virtualization
Npiv Example
Cisco NPV Fabric Configuration
NPV Mode
NP Ports
NP Links
Internal Flogi Parameters
Default Port Numbers
Parameter Derived From
Internal Flogi Parameters
Traffic Map
NPV CFS Distribution over IP
NPV Traffic Management
Auto
Multiple Vsan Support
Disruptive
NPV Guidelines and Requirements
NPV Traffic Management Guidelines
Dpvm Configuration Guidelines
Enabling N Port Identifier Virtualization
Configuring N Port Virtualization
Configuring NPV
NPV and Port Security Configuration Guidelines
Disables Npiv mode on the NPV core switch
To configure NPV using the CLI, perform the following tasks
On the NPV core switch, enters configuration
Enables Npiv mode on the NPV core switch
Configuring NPV Traffic Management
Enabling the Global Policy for Disruptive Load Balancing
Verifying NPV Configuration
Switch# show fcns database
Switch# show fcns database detail
Verifying NPV
Switch# show npv flogi-table
Switch# show npv internal info traffic-map
Verifying NPV Traffic Management
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FlexAttach Virtual pWWN
Information About FlexAttach Virtual pWWN
FlexAttach Virtual pWWN CFS Distribution
SAN Device Virtualization SDV FlexAttach Virtualization
Difference Between SDV and FlexAttach Virtualization
Configuring FlexAttach Virtual pWWN
Security Settings for FlexAttach Virtual pWWN
Automatically Assigning FlexAttach Virtual pWWN
Mapping pWWN to Virtual pWWN
Manually Assigning FlexAttach Virtual pWWN
To map pWWN to virtual pWWN, perform this task
Verifying FlexAttach Virtual pWWN Configuration
Commits the configuration
Specified virtual pWWN and the real pWWN must not be logged
Error Description Workaround
Monitoring FlexAttach Virtual pWWN
Verifying the End Device
Error Description Workaround
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Information About Port Tracking
Configuring Port Tracking
Default Port Tracking Parameters
1lists the default settings for port tracking parameters
Configuring Port Tracking
Information About Configuring Linked Ports
Enabling Port Tracking
Information About Tracking Multiple Ports
Binding a Tracked Port Operationally
Tracking Multiple Ports
Information About Monitoring Ports in a Vsan
Monitoring Ports in a Vsan
Linked port
Displaying Port Tracking Information
Information AboutForceful Shutdown
Forcefully Shutting Down a Tracked Port
Switch# show interface fc1/1
Switch# show interface port-channel
Port linked to interface fc1/1
Switch# show interface fc 1/5
Example 9-4 Displays a Forced Shutdown Configuration
Bandwidth fairness Default settings Example configurations
Port 10-Gbps switching modules
Asterisk First operational port
IN-2
IN-3
Deleting from PortChannels
MPS-14/2 modules Configuring extended BBcredits
Configuring descriptions
IN-5
IN-6
TL ports Alpa caches Configuring
Trunk mode Administrative default Configuring
Status Trunk ports Displaying information
IN-8
