Cisco Nexus 5000 Series User manual

Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
Americas Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: [phone]
800 553-NETS (6387)
Fax: [phone]
Text Part Number: OL-xxxxx-xx

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS,
INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH
THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY,
CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.
The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB's public domain version
of the UNIX operating system. All rights reserved. Copyright ©1981, Regents of the University of California.
NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS" WITH ALL FAULTS.
CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE.
IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT
LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS
HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network
topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional
and coincidental.
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: http://
www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership
relationship between Cisco and any other company. (1110R)
©2015 Cisco Systems, Inc. All rights reserved.

CONTENTS
Preface Preface xvii
Audience xvii
Document Organization xvii
Document Conventions xix
Related Documentation for Nexus 5000 Series NX-OS Software xx
Obtaining Documentation and Submitting a Service Request xxi
CHAPTER 1 New and Changed Information 1
New and Changed Information 1
CHAPTER 2 Overview 3
SAN Switching Overview 3
CHAPTER 3 Configuring Fibre Channel Interfaces 7
Configuring Fibre Channel Interfaces 7
Information About Fibre Channel Interfaces 7
Licensing Requirements for Fibre Channel 7
QOS Requirements for Fibre Channel 7
Physical Fibre Channel Interfaces 8
Virtual Fibre Channel Interfaces 8
Interface Modes 8
E Port 9
F Port 9
NP Port 9
TE Port 9
TF Port 9
TNP Port 10
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
OL-xxxxx-xx iii

SD Port 10
Auto Mode 10
Interface States 10
Administrative States 10
Operational States 11
Reason Codes 11
Buffer-to-Buffer Credits 14
Configuring Fibre Channel Interfaces 14
Configuring a Fibre Channel Interface 14
Configuring a Range of Fibre Channel Interfaces 14
Setting the Interface Administrative State 15
Configuring Interface Modes 15
Configuring the Interface Description 16
Configuring Port Speeds 17
Autosensing 18
Configuring SD Port Frame Encapsulation 18
Configuring Receive Data Field Size 18
Understanding Bit Error Thresholds 19
Configuring Buffer-to-Buffer Credits 20
Configuring Global Attributes for Fibre Channel Interfaces 21
Configuring Switch Port Attribute Default Values 21
About N Port Identifier Virtualization 22
Enabling N Port Identifier Virtualization 22
Example Port Channel Configurations 23
Verifying Fibre Channel Interfaces 24
Verifying SFP Transmitter Types 24
Verifying Interface Information 24
Verifying BB_Credit Information 25
Default Fibre Channel Interface Settings 25
CHAPTER 4 Configuring Domain Parameters 27
Configuring Domain Parameters 27
Information About Fibre Channel Domains 27
About Domain Restart 28
Restarting a Domain 29
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
iv OL-xxxxx-xx
Contents

About Domain Manager Fast Restart 29
Enabling Domain Manager Fast Restart 29
About Switch Priority 30
Configuring Switch Priority 30
About fcdomain Initiation 31
Disabling or Reenabling fcdomains 31
Configuring Fabric Names 31
About Incoming RCFs 32
Rejecting Incoming RCFs 32
About Autoreconfiguring Merged Fabrics 33
Enabling Autoreconfiguration 33
Domain IDs 34
About Domain IDs 34
Specifying Static or Preferred Domain IDs 36
About Allowed Domain ID Lists 37
Configuring Allowed Domain ID Lists 37
About CFS Distribution of Allowed Domain ID Lists 38
Enabling Distribution 38
Locking the Fabric 39
Committing Changes 39
Discarding Changes 40
Clearing a Fabric Lock 40
Displaying CFS Distribution Status 40
Displaying Pending Changes 41
Displaying Session Status 41
About Contiguous Domain ID Assignments 41
Enabling Contiguous Domain ID Assignments 41
FC IDs 42
About Persistent FC IDs 42
Enabling the Persistent FC ID Feature 43
Persistent FC ID Configuration Guidelines 43
Configuring Persistent FC IDs 44
About Unique Area FC IDs for HBAs 44
Configuring Unique Area FC IDs for an HBA 45
About Persistent FC ID Selective Purging 46
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
OL-xxxxx-xx v
Contents

Purging Persistent FC IDs 46
Verifying fcdomain Information 47
Default Fibre Channel Domain Settings 48
CHAPTER 5 Configuring N Port Virtualization 49
Configuring N Port Virtualization 49
Information About NPV 49
NPV Overview 49
NPV Mode 50
Server Interfaces 50
NP Uplinks 50
FLOGI Operation 51
NPV Traffic Management 52
Automatic Uplink Selection 52
Traffic Maps 52
Disruptive Load Balancing 52
NPV Traffic Management Guidelines 53
NPV Guidelines and Limitations 53
Configuring NPV 54
Enabling NPV 54
Configuring NPV Interfaces 54
Configuring an NP Interface 55
Configuring a Server Interface 55
Configuring NPV Traffic Management 56
Configuring NPV Traffic Maps 56
Enabling Disruptive Load Balancing 56
Verifying NPV 57
Verifying NPV Examples 57
Verifying NPV Traffic Management 58
CHAPTER 6 Configuring VSAN Trunking 59
Configuring VSAN Trunking 59
Information About VSAN Trunking 59
VSAN Trunking Mismatches 60
VSAN Trunking Protocol 61
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
vi OL-xxxxx-xx
Contents

Configuring VSAN Trunking 61
Guidelines and Restrictions 61
Enabling or Disabling the VSAN Trunking Protocol 61
About Trunk Mode 62
Configuring Trunk Mode 63
About Trunk-Allowed VSAN Lists 64
Configuring an Allowed-Active List of VSANs 65
Displaying VSAN Trunking Information 66
Default Trunk Configuration Settings 66
CHAPTER 7 Configuring SAN Port Channel 69
Configuring SAN Port Channels 69
Information About SAN Port Channels 69
Understanding Port Channels and VSAN Trunking 70
Understanding Load Balancing 71
Configuring SAN Port Channels 73
SAN Port Channel Configuration Guidelines 75
F and TF Port Channel Guidelines 75
Creating a SAN Port Channel 75
About Port Channel Modes 76
Configuring Active Mode SAN Port Channel 77
About SAN Port Channel Deletion 78
Deleting SAN Port Channels 78
Interfaces in a SAN Port Channel 79
About Interface Addition to a SAN Port Channel 79
Compatibility Check 79
Suspended and Isolated States 80
Adding an Interface to a SAN Port Channel 80
Forcing an Interface Addition 81
About Interface Deletion from a SAN Port Channel 82
Deleting an Interface from a SAN Port Channel 82
SAN Port Channel Protocol 82
About Channel Group Creation 83
Autocreation Guidelines 84
Enabling and Configuring Autocreation 85
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
OL-xxxxx-xx vii
Contents

About Manually Configured Channel Groups 86
Converting to Manually Configured Channel Groups 86
Example Port Channel Configurations 86
Verifying SAN Port Channel Configuration 87
Default Settings for SAN Port Channels 88
CHAPTER 8 Configuring and Managing VSANs 89
Configuring and Managing VSANs 89
Information About VSANs 89
VSAN Topologies 89
VSAN Advantages 92
VSANs Versus Zones 92
Configuring VSANs 93
About VSAN Creation 94
Creating VSANs Statically 94
About Port VSAN Membership 95
Assigning Static Port VSAN Membership 95
Displaying VSAN Static Membership 96
About the Default VSAN 96
About the Isolated VSAN 97
Displaying Isolated VSAN Membership 97
Operational State of a VSAN 97
About Static VSAN Deletion 97
Deleting Static VSANs 98
About Load Balancing 99
Configuring Load Balancing 99
About Interop Mode 100
Displaying Static VSAN Configuration 100
Default VSAN Settings 100
CHAPTER 9 Configuring and Managing Zones 103
Configuring and Managing Zones 103
Information About Zoning 103
Zoning Features 103
Zoning Example 105
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
viii OL-xxxxx-xx
Contents

Zone Implementation 105
Active and Full Zone Set Configuration Guidelines 106
Configuring Zones 109
Configuring Zones Example 109
Zone Sets 111
Activating a Zone Set 111
About the Default Zone 112
Configuring the Default Zone Access Permission 112
About FC Alias Creation 113
Creating FC Aliases 113
Creating FC Aliases Example 114
Creating Zone Sets and Adding Member Zones 115
Zone Enforcement 116
Zone Set Distribution 116
Enabling Full Zone Set Distribution 116
Enabling a One-Time Distribution 117
About Recovering from Link Isolation 118
Importing and Exporting Zone Sets 118
Zone Set Duplication 119
Copying Zone Sets 119
Renaming Zones, Zone Sets, and Aliases 120
Cloning Zones, Zone Sets, FC Aliases, and Zone Attribute Groups 121
Clearing the Zone Server Database 121
Verifying Zone Information 122
Enhanced Zoning 122
About Enhanced Zoning 122
Changing from Basic Zoning to Enhanced Zoning 123
Changing from Enhanced Zoning to Basic Zoning 124
Enabling Enhanced Zoning 124
Modifying the Zone Database 125
Releasing Zone Database Locks 126
Merging the Database 126
Configuring Zone Merge Control Policies 127
Default Zone Policies 128
Configuring System Default Zoning Settings 128
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
OL-xxxxx-xx ix
Contents

Verifying Enhanced Zone Information 129
Compacting the Zone Database 129
Zone and Zone Set Analysis 130
Default Basic Zone Settings 130
CHAPTER 10 Distributing Device Alias Services 131
Distributing Device Alias Services 131
Information About Device Aliases 131
Device Alias Features 131
Device Alias Requirements 132
Zone Aliases Versus Device Aliases 132
Device Alias Databases 133
Creating Device Aliases 133
Device Alias Modes 134
Changing Device Alias Mode Guidelines 134
Configuring Device Alias Modes 135
About Device Alias Distribution 135
Locking the Fabric 136
Committing Changes 136
Discarding Changes 137
Fabric Lock Override 137
Disabling and Enabling Device Alias Distribution 138
About Legacy Zone Alias Configuration 139
Importing a Zone Alias 139
Device Alias Database Merge Guidelines 139
Verifying Device Alias Configuration 140
Default Device Alias Settings 141
CHAPTER 11 Configuring Fibre Channel Routing Services and Protocols 143
Configuring Fibre Channel Routing Services and Protocols 143
Information About FSPF 143
FSPF Examples 144
Fault Tolerant Fabric Example 144
Redundant Link Example 144
FSPF Global Configuration 145
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
xOL-xxxxx-xx
Contents

About SPF Computational Hold Times 145
About Link State Records 145
Configuring FSPF on a VSAN 146
Resetting FSPF to the Default Configuration 147
Enabling or Disabling FSPF 147
Clearing FSPF Counters for the VSAN 148
FSPF Interface Configuration 148
About FSPF Link Cost 148
Configuring FSPF Link Cost 148
About Hello Time Intervals 149
Configuring Hello Time Intervals 149
About Dead Time Intervals 150
Configuring Dead Time Intervals 150
About Retransmitting Intervals 150
Configuring Retransmitting Intervals 151
About Disabling FSPF for Specific Interfaces 151
Disabling FSPF for Specific Interfaces 151
Clearing FSPF Counters for an Interface 152
FSPF Routes 152
About Fibre Channel Routes 153
Configuring Fibre Channel Routes 153
In-Order Delivery 154
About Reordering Network Frames 154
About Reordering SAN Port Channel Frames 155
About Enabling In-Order Delivery 155
Enabling In-Order Delivery Globally 156
Enabling In-Order Delivery for a VSAN 156
Displaying the In-Order Delivery Status 157
Configuring the Drop Latency Time 157
Displaying Latency Information 158
Flow Statistics Configuration 158
About Flow Statistics 158
Counting Aggregated Flow Statistics 158
Counting Individual Flow Statistics 159
Clearing FIB Statistics 159
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
OL-xxxxx-xx xi
Contents

Displaying Flow Statistics 160
Default FSPF Settings 160
CHAPTER 12 Managing FLOGI, Name Server, FDMI, and RSCN Databases 163
Managing FLOGI, Name Server, FDMI, and RSCN Databases 163
Information About Fabric Login 163
Name Server Proxy 164
About Registering Name Server Proxies 164
Registering Name Server Proxies 164
About Rejecting Duplicate pWWNs 164
Rejecting Duplicate pWWNs 164
About Name Server Database Entries 165
Displaying Name Server Database Entries 165
FDMI 166
Displaying FDMI 166
RSCN 166
About RSCN Information 167
Displaying RSCN Information 167
About the multi-pid Option 167
Configuring the multi-pid Option 167
Suppressing Domain Format SW-RSCNs 168
Clearing RSCN Statistics 168
Configuring the RSCN Timer 169
Verifying the RSCN Timer Configuration 170
RSCN Timer Configuration Distribution 170
Enabling RSCN Timer Configuration Distribution 170
Locking the Fabric 171
Committing the RSCN Timer Configuration Changes 171
Discarding the RSCN Timer Configuration Changes 171
Clearing a Locked Session 172
Displaying RSCN Configuration Distribution Information 172
Default RSCN Settings 173
CHAPTER 13 Discovering SCSI Targets 175
Discovering SCSI Targets 175
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
xii OL-xxxxx-xx
Contents

Information About SCSI LUN Discovery 175
About Starting SCSI LUN Discovery 175
Starting SCSI LUN Discovery 176
About Initiating Customized Discovery 176
Initiating Customized Discovery 176
Displaying SCSI LUN Information 177
CHAPTER 14 Advanced Fibre Channel Features and Concepts 179
Advanced Fibre Channel Features and Concepts 179
Fibre Channel Timeout Values 179
Timer Configuration Across All VSANs 179
Timer Configuration Per-VSAN 180
About fctimer Distribution 181
Enabling or Disabling fctimer Distribution 181
Committing fctimer Changes 182
Discarding fctimer Changes 182
Fabric Lock Override 183
Fabric Database Merge Guidelines 183
Verifying Configured fctimer Values 184
World Wide Names 184
Verifying WWN Information 185
Link Initialization WWN Usage 185
Configuring a Secondary MAC Address 185
FC ID Allocation for HBAs 186
Default Company ID List 186
Verifying the Company ID Configuration 187
Switch Interoperability 188
About Interop Mode 188
Configuring Interop Mode 1 191
Verifying Interoperating Status 192
Default Settings for Advanced Features 197
CHAPTER 15 Configuring FC-SP and DHCHAP 199
Configuring FC-SP and DHCHAP 199
Information About Fabric Authentication 199
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
OL-xxxxx-xx xiii
Contents

DHCHAP 200
DHCHAP Compatibility with Fibre Channel Features 201
About Enabling DHCHAP 201
Enabling DHCHAP 202
About DHCHAP Authentication Modes 202
Configuring the DHCHAP Mode 203
About the DHCHAP Hash Algorithm 204
Configuring the DHCHAP Hash Algorithm 204
About the DHCHAP Group Settings 205
Configuring the DHCHAP Group Settings 205
About the DHCHAP Password 205
Configuring DHCHAP Passwords for the Local Switch 206
About Password Configuration for Remote Devices 206
Configuring DHCHAP Passwords for Remote Devices 207
About the DHCHAP Timeout Value 207
Configuring the DHCHAP Timeout Value 207
Configuring DHCHAP AAA Authentication 208
Displaying Protocol Security Information 208
Sample Configuration 209
Default Fabric Security Settings 210
CHAPTER 16 Configuring Port Security 213
Configuring Port Security 213
Information About Port Security 213
Port Security Enforcement 213
About Auto-Learning 214
Port Security Activation 214
Configuring Port Security 215
Configuring Port Security with Auto-Learning and CFS Distribution 215
Configuring Port Security with Auto-Learning without CFS 216
Configuring Port Security with Manual Database Configuration 217
Enabling Port Security 217
Port Security Activation 218
Activating Port Security 218
Database Activation Rejection 218
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
xiv OL-xxxxx-xx
Contents

Forcing Port Security Activation 219
Database Reactivation 219
Auto-Learning 220
About Enabling Auto-Learning 220
Enabling Auto-Learning 221
Disabling Auto-Learning 221
Auto-Learning Device Authorization 221
Authorization Scenario 222
Port Security Manual Configuration 224
WWN Identification Guidelines 224
Adding Authorized Port Pairs 224
Port Security Configuration Distribution 225
Enabling Port Security Distribution 226
Locking the Fabric 227
Committing the Changes 227
Discarding the Changes 227
Activation and Auto-Learning Configuration Distribution 228
Port Security Database Merge Guidelines 230
Database Interaction 230
Database Scenarios 232
Copying the Port Security Database 233
Deleting the Port Security Database 233
Clearing the Port Security Database 233
Displaying Port Security Configuration 234
Default Port Security Settings 234
CHAPTER 17 Configuring Fabric Binding 235
Configuring Fabric Binding 235
Information About Fabric Binding 235
Licensing Requirements for Fabric Binding 235
Port Security Versus Fabric Binding 235
Fabric Binding Enforcement 236
Configuring Fabric Binding 236
Configuring Fabric Binding 237
Enabling Fabric Binding 237
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
OL-xxxxx-xx xv
Contents

About Switch WWN Lists 238
Configuring Switch WWN List 238
About Fabric Binding Activation and Deactivation 239
Activating Fabric Binding 239
Forcing Fabric Binding Activation 239
Copying Fabric Binding Configurations 240
Clearing the Fabric Binding Statistics 240
Deleting the Fabric Binding Database 241
Verifying Fabric Binding Information 241
Default Fabric Binding Settings 242
CHAPTER 18 Configuring Fabric Configuration Servers 243
Configuring Fabric Configuration Servers 243
Information About FCS 243
FCS Characteristics 244
FCS Name Specification 245
Displaying FCS Information 245
Default FCS Settings 246
CHAPTER 19 Configuring Port Tracking 247
Configuring Port Tracking 247
Information About Port Tracking 247
Configuring Port Tracking 248
Enabling Port Tracking 249
About Configuring Linked Ports 249
Operationally Binding a Tracked Port 249
About Tracking Multiple Ports 250
Tracking Multiple Ports 250
About Monitoring Ports in a VSAN 251
Monitoring Ports in a VSAN 251
About Forceful Shutdown 252
Forcefully Shutting Down a Tracked Port 252
Displaying Port Tracking Information 253
Default Port Tracking Settings 253
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
xvi OL-xxxxx-xx
Contents

Preface
This preface describes the audience, organization, and conventions of the Cisco Nexus 5000 Series NX-OS
SAN Switching Configuration Guide. It also provides information on how to obtain related documentation.
•Audience, page xvii
•Document Organization, page xvii
•Document Conventions, page xix
•Related Documentation for Nexus 5000 Series NX-OS Software, page xx
•Obtaining Documentation and Submitting a Service Request, page xxi
Audience
This preface describes the audience, organization, and conventions of the . It also provides information on
how to obtain related documentation.
Document Organization
This document is organized into the following chapters:
DescriptionChapter
Describes the new and changed information for the new Cisco NX-OS
software releases.
New and Changed Information
Provides an overview of all the features in this guide.Overview
Describes the licensing requirements, configuration information, interface
modes, and interface states for Fibre Channel interfaces.
Configuring Fibre Channel
Interfaces
Describes configuration information for domain parameters, domain IDs,
and FC IDs.
Configuring Domain
Parameters
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
OL-xxxxx-xx xvii

DescriptionChapter
Provides an overview of N Port Virtualization, information on how to
configure NPV interfaces, and includes quidelines and requirements for
configuring and verifying NPV.
Configuring N Port
Virtualization
Explains TE ports and trunking concepts and describes how to configure
VSAN trunking how to enable trunking protocols.
Configuring VSAN Trunking
Explains SAN PortChannels and load balancing concepts and provides
details on configuring SAN PortChannels, and adding or deleting ports
to SAN PortChannels.
Configuring SAN Port Channel
Describes how virtual SANs (VSANs) work, explains the concept of
default VSANs, isolated VSANs, VSAN IDs, and attributes, and provides
details on how to create, delete, and view VSANs.
Configuring and Managing
VSANs
Defines various zoning concepts and provides details on configuring a
zone set and zone management features.
Configuring and Managing
Zones
Describes the use of the Distributed Device Alias Services (device alias)
to distribute device alias names on a fabric-wide basis.
Distributing Device Alias
Services
Provides details and configuration information on Fibre Channel routing
services and protocols.
Configuring Fibre Channel
Routing Services and Protocols
Provides name server and fabric login details required to manage storage
devices and display registered state change notification (RSCN) databases.
Managing FLOGI, Name
Server, FDMI, an RSCN
Databases
Describes how the SCSI LUN discovery feature is started and displayed.Discovering SCSI Targets
Describes the advanced configuration features-time out values, fctrace,
fabric analyzer, world wide names, flat FC IDs, loop monitoring, and
interoperating switches.
Advanced Fibre Channel
Features and Concepts
Describes the DHCHAP protocol, an FC-SP protocol, that provides
authentication between Cisco MDS 9000 Family switches and other
devices.
Configuring FC-SP and
DHCHAP
Provides details on port security features that can prevent unauthorized
access to a switch port in the Cisco MDS 9000 Family.
Configuring Port Security
Describes the fabric binding security feature for VSANs, which ensures
that ISLs are only enabled between specific switches.
Configuring Fabric Binding
Describes how the fabric configuration server (FCS) feature is configured
and displayed.
Configuring Fabric
Configuration Servers
Describes the port tracking feature and provides information to enable
port tracking and to configure linked ports.
Configuring Port Tracking
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
xviii OL-xxxxx-xx
Preface
Document Organization

Document Conventions
Command descriptions use the following conventions:
DescriptionConvention
Bold text indicates the commands and keywords that you enter literally
as shown.
bold
Italic text indicates arguments for which the user supplies the values.
Italic
Square brackets enclose an optional element(keyword or argument).[x]
Square brackets enclosing keywords or arguments separated by a vertical
bar indicate an optional choice.
[x | y]
Braces enclosing keywords or arguments separated by a vertical bar
indicate a required choice.
{x | y}
Nested set of square brackets or braces indicate optional or required
choices within optional or required elements. Braces and a vertical bar
within square brackets indicate a required choice within an optional
element.
[x {y | z}]
Indicates a variable for which you supply values, in context where italics
cannot be used.
variable
A nonquoted set of characters. Do not use quotation marks around the
string or the string will include the quotation marks.
string
Screen examples use the following conventions:
DescriptionConvention
Terminal sessions and information the switch displays are in screen font.screen font
Information you must enter is in boldface screen font.boldface screen font
Arguments for which you supply values are in italic screen font.italic screen font
Nonprinting characters, such as passwords, are in angle brackets.< >
Default responses to system prompts are in square brackets.[ ]
An exclamation point (!) or a pound sign (#) at the beginning of a line
of code indicates a comment line.
!, #
This document uses the following conventions:
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
OL-xxxxx-xx xix
Preface
Document Conventions

Means reader take note. Notes contain helpful suggestions or references to material not covered in the
manual.
Note
Means reader be careful. In this situation, you might do something that could result in equipment damage
or loss of data.
Caution
Related Documentation for Nexus 5000 Series NX-OS Software
Cisco NX-OS documentation is available at the following URL:
http://www.cisco.com/en/US/products/ps9670/tsd_products_support_series_home.htmll
The documentation set for the Cisco Nexus 5000 Series NX-OS software includes the following documents:
Release Notes
•Cisco Nexus 5000 Series and Cisco Nexus 2000 Series Release Notes
•Cisco Nexus 5000 Series Switch Release Notes
Cisco Nexus 5000 Series NX-OS Configuration Guides
•Cisco Nexus 5000 Series NX-OS Fibre Channel over Ethernet Configuration Guide
•Cisco Nexus 5000 Series NX-OS Layer 2 Switching Configuration Guide
•Cisco Nexus 5000 Series NX-OS Quality of Service Configuration Guide
•Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
•Cisco Nexus 5000 Series NX-OS Security Configuration Guide
•Cisco Nexus 5000 Series NX-OS System Management Configuration Guide
•Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
•Cisco Nexus 5000 Series Fabric Manager Configuration Guide, Release 3.4(1a)
Installation and Upgrade Guides
•Cisco Nexus 5000 Series Hardware Installation Guide
•Regulatory Compliance and Safety Information for the Cisco Nexus 5000 Series
Cisco NX-OS Command References
•Cisco Nexus 5000 Series Command Reference
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
xx OL-xxxxx-xx
Preface
Related Documentation for Nexus 5000 Series NX-OS Software