Cisco Nexus 7000 Series User manual

Cisco NX-OS FCoE Configuration Guide for Nexus 7000 and MDS 9500
First Published: July 12, 2011
Last Modified: November 01, 2012
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Text Part Number: OL-25809-02

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CONTENTS
Preface Preface vii
Audience vii
Document Conventions vii
Related Documentation viii
Obtaining Documentation and Submitting a Service Request ix
Preface New and Changed Information xi
Cisco Nexus 7000: New and Changed Information xi
Cisco MDS 9500: New and Changed Information xii
CHAPTER 1 Overview 1
Information About Fibre Channel Over Ethernet 1
Fibre Channel Forwarder 1
Fibre Channel Bridge 2
CHAPTER 2 FCoE 3
Information About FCoE 3
FCoE and FIP 3
FCoE Initiation Protocol 3
FIP Virtual Link Instantiation 4
FCoE Frame Format 4
VLAN Tagging for FCoE Frames 4
FIP Ethernet Frame Format 5
DCBX 5
Data Center Bridging Exchange Protocol 5
Lossless Ethernet 6
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Logical Link Up/Down 6
Converged Network Adapters 6
STP Lite 7
Default Settings for FCoE 7
Licensing Requirements for FCoE 7
Guidelines and Limitations 8
Cisco Nexus 7000: Guidelines and Limitations 8
Cisco MDS 9500: Guidelines and Limitations 9
Configuring FCoE 10
Enabling FCoE 10
Cisco Nexus 7000: Enabling FCoE 10
Cisco MDS 9500: Enabling FCoE 11
Disabling FCoE 13
Cisco Nexus 7000: Disabling FCoE 13
Cisco MDS 9500: Disabling FCoE 14
Configuring the FC-Map 15
Configuring the Fabric Priority 16
Setting the Advertisment Interval 17
Disabling LAN Traffic on an FCoE Link 18
Verifying the FCoE Configuration 19
Additional References for FCoE 20
CHAPTER 3 Configuring FCoE VLANs and Virtual Interfaces 21
Information About Virtual Fibre Channel (VFC) Interfaces 21
VF Port 21
VE Port 22
Default Settings for FCoE 22
Licensing Requirements for FCoE 22
Guidelines and Limitations 23
Cisco Nexus 7000: Guidelines and Limitations 23
Cisco MDS 9500: Guidelines and Limitations 24
Configuring Virtual Interfaces 25
Mapping a VSAN to a VLAN 25
Creating a Virtual Fibre Channel Interface 26
Creating a Virtual Fibre Channel Port Channel Interface 28
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Associating a Virtual Fibre Channel Interface to a VSAN 29
Enabling VE Loopback Configuration 31
Verifying the Virtual Interface 32
Example:Mapping VSANs to VLANs 33
Additional References for FCoE 34
CHAPTER 4 Storage VDC on Cisco Nexus 7000 Series Switches 37
Information About Storage VDC 37
Licensing Requirements for FCoE 38
Guidelines and Limitations 38
Cisco Nexus 7000: Guidelines and Limitations 38
Cisco MDS 9500: Guidelines and Limitations 39
Configuring FCoE VDCs 40
Creating a Dedicated Storage VDC 40
Cisco Nexus 7000:Licensing an FCoE Module 42
Allocating the FCoE VLAN Range 43
Allocating Shared Interfaces 44
Example: Storage VDC Configuration 46
APPENDIX A Feature History by Platform 49
Cisco Nexus 7000:Supported Features 49
Cisco MDS 9500:Supported Features 49
APPENDIX B Guidelines and Limitations 51
Verified Limits for FCoE for the Cisco Nexus 7000 Series and Cisco MDS 9500 51
Cisco Nexus 7000: Guidelines and Limitations 51
Cisco MDS 9500: Guidelines and Limitations 53
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Contents

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Preface
This preface describes the audience, organization, and conventions of the Cisco NX-OS FCoE Configuration
Guide. It also provides information on how to obtain related documentation.
•Audience, page vii
•Document Conventions, page vii
•Related Documentation, page viii
•Obtaining Documentation and Submitting a Service Request, page ix
Audience
This publication is for experienced users who configure and maintain Cisco NX-OS devices.
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}
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DescriptionConvention
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
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:
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
The Cisco Nexus 7000 Series documentation is available at the following URL:
http://www.cisco.com/en/us/products/ps9402/tsd_products_support_series_home.html
The Cisco MDS 9500 Series documentation is available at the following URL:
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Preface
Related Documentation

http://www.cisco.com/en/US/products/ps5989/tsd_products_support_series_home.html
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional information,
see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco
technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed
and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free
service and Cisco currently supports RSS version 2.0.
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Preface
Obtaining Documentation and Submitting a Service Request

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Preface
Obtaining Documentation and Submitting a Service Request