Brocade Communications Systems Gateway, Access Gateway Administrator's Manual

53-1000633-01
15 Jun 2007

Access Gateway

Administrator’s Guide

Supporting Fabric OS v5.3.0

Copyright © 2007, Brocade Communications Systems, Incorporated.

ALL RIGHTS RESERVED.

Brocade, the Brocade B weave logo, Fabric OS, File Lifecycle Manager, MyView, Secure Fabric OS, SilkWorm, and StorageX are
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Document History

The following table lists all versions of the Access Gateway Set Up Guide.

Document Title Publication Number Summary of Changes Publication Date

Access Gateway Administrator’s Guide 53-1000430-01 First version January 2007

Access Gateway Administrator’s Guide 53-1000633-01 Added support for the 200E 15 Jun 2007

Contents

About This Document

Supported hardware and software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

How this document is organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

What’s new in this document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

Document conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi

Text formatting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi

Notes, cautions, and warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Key terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Additional information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

Brocade resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

Other industry resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ix

Optional Brocade features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ix

Getting technical help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Document feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Chapter 1 Introduction to the Brocade Access Gateway

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Overview of Brocade Access Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Brocade features in Access Gateway mode. . . . . . . . . . . . . . . . . . . . . . . . . . 2

Access Gateway port types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Comparing FC port configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Port mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Port initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Failover policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Cold Failover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Failback policy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Chapter 2 Configuring Access Gateway

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In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Verifying the fabric and edge switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Enabling Access Gateway mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Using the CLI to enable Access Gateway mode . . . . . . . . . . . . . . . . . . . . . . 10

Chapter 3 Disabling Access Gateway Mode

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Backing up the Switch Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Disabling Access Gateway mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Using the CLI to disable Access Gateway mode. . . . . . . . . . . . . . . . . . . . . . 14

Notes on joining the switch to a fabric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Chapter 4 Managing Ports in Access Gateway mode

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Determining the mapping and port status . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Displaying the port mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Displaying the port status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Configuring port maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Adding F_Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Removing F_Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Managing the failover and failback policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Enabling the failover policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Enabling the failback policy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Configuring additional F_Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Unlocking N_Port mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Appendix A Default Port Mapping

Appendix B Compatibility

Appendix C Troubleshooting

Appendix D Access Gateway Commands

Access Gateway commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Index

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About This Document

This document is a procedural guide to help SAN administrators configure and manage Brocade
Access Gateway.

This preface contains the following sections:

•How this document is organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

•Supported hardware and software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

•What’s new in this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

•Document conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

•Key terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

•Additional information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

•Getting technical help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

•Document feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Supported hardware and software

This document is specific to Fabric OS v5.3.0 or higher running on the Brocade 200E switch and
the Brocade 4012, 4016, 4020, and 4024 embedded switches.

When procedures or parts of procedures documented here apply to some switches but not to
others, this guide identifies which switches are supported and which are not.

This document sometimes mentions other Fabric OS releases to highlight the changes in the latest
release or to point out interoperability issues with other Brocade models. It also specifies when
procedures or steps of procedures apply only to specific Brocade models.

Although many different software and hardware configurations are tested and supported by
Brocade Communications Systems, Inc. for this Brocade Fabric OS release, documenting all
possible configurations and scenarios is beyond the scope of this document.

How this document is organized

The document contains the following topics:

• Chapter 1, “Introduction to the Brocade Access Gateway” describes the Access Gateway

operation.

• Chapter 2, “Configuring Access Gateway” provides the initial setup procedures and fabric

requirement to deploy an Access Gateway solution.

• Chapter 3, “Disabling Access Gateway Mode” provides instructions on disabling Access

Gateway mode so that the switch can be used as a fabric switch.

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• Chapter 4, “Managing Ports in Access Gateway mode” provides instructions on changing

N_Ports to F_Ports, mapping F_Ports to N_Ports, and changing failover and failback policies.

• Chapter 4, “Managing Ports in Access Gateway mode” provides instructions on changing

N_Ports to F_Ports, mapping F_Ports to N_Ports, and changing failover and failback policies.

• Appendix A, “Default Port Mapping” provides the default N_Port mappings for the different

switches while in Access Gateway mode.

• Appendix B, “Compatibility” provides compatibility information between different devices while

running a switch in Access Gateway mode.

• Appendix C, “Troubleshooting” provides symptoms and troubleshooting tips to resolve issues.

• Appendix D, “Access Gateway Commands” provides the commands for Access Gateway.

The appendices provide the default mappings, compatibility guidelines, and troubleshooting
assistance.

What’s new in this document

The following changes have been made since this document was last released:

Information that was added:

• Support for the following platform:

- Brocade 200E switch

• Enhancements to the failback policy

• Enhancements for compatibility

Information that was removed:

• System messages were moved to the Fabric OS System Message Reference

• All references to using Web Tools was moved to the Web Tool Administrator’s Guide

For further information, refer to the release notes.

Document conventions

This section describes text formatting conventions and important notices formats.

TEXT FORMATTING

The narrative-text formatting conventions that are used in this document are as follows:

bold text Identifies command names

italic text Provides emphasis

vi Access Gateway Administrator’s Guide

Identifies the names of user-manipulated GUI elements
Identifies keywords and operands
Identifies text to enter at the GUI or CLI

Identifies variables
Identifies paths and Internet addresses
Identifies document titles

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NOTE

CAUTION

WARNING

code text Identifies CLI output

Identifies syntax examples

For readability, command names in the narrative portions of this guide are presented in mixed
lettercase: for example, switchShow. In actual examples, command lettercase is often all
lowercase. Otherwise, this manual specifically notes those cases in which a command is case
sensitive. The ficonCupSet and ficonCupShow commands are an exception to this convention.

NOTES, CAUTIONS, AND WARNINGS

The following notices appear in this document.

A note provides a tip, emphasizes important information, or provides a reference to related
information.

A caution alerts you to potential damage to hardware, firmware, software, or data.

Key terms

A warning alerts you to potential danger to personnel.

For definitions of SAN-specific terms, visit the Storage Networking Industry Association online
dictionary at: http://www.snia.org/education/dictionary.

For definitions specific to Brocade and Fibre Channel, see the Brocade Glossary.

The following terms are used in this manual to describe Access Gateway mode and its components.

Access Gateway (AG) Fabric OS mode for embedded switches that reduces SAN (storage area

network) deployment complexity by leveraging NPIV (N_Port ID virtualization).

Edge switch Fabric switch that connects host, storage, or other devices, such as Brocade

Access Gateway, to the fabric.

NPIV N_Port ID virtualization. Allows a single Fibre Channel port to appear as

multiple, distinct ports providing separate port identification and security
zoning within the fabric for each operating system image as if each operating
system image had its own unique physical port.

E_Port An ISL (Interswitch link) port. A switch port that connects switches together to

form a fabric.

F_Port A fabric port. A switch port that connects a host, HBA (host bus adaptor), or

storage device to the SAN. On Brocade Access Gateway, the F_Port connects
to a host only.

N_Port A node port. A Fibre Channel host or storage port in a fabric or point-to-point

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connection. On Brocade Access Gateway, the N_Port connects to the edge
switch.

NOTE

mapping On Brocade Access Gateway, the configuration of F_Port to N_Port routes.

Additional information

This section lists additional Brocade and industry-specific documentation that you might find
helpful.

BROCADE RESOURCES

The most recent version of documentation is provided on the Brocade Web site, through Brocade
Connect.

Go to http://www.brocade.com and CLIck Brocade Connect to register at no cost for a user ID and
password.

The following documentation is available for Fabric OS:

• Fabric OS Administrator’s Guide

• Fabric OS Command Reference

• Fabric OS MIB Reference

• Fabric OS Message Reference

• Web Tools Administrator’s Guide

• Brocade Glossary

The following documentation is available for Brocade switches:

• Brocade 200E Hardware Reference Manual

• Brocade 200E QuickStart Guide

• Brocade 4016 Hardware Reference Manual

• Brocade 4016 QuickStart Guide

• Brocade 4020 Hardware Reference Manual

• Brocade 4020 QuickStart Guide

For practical discussions about SAN design, implementation, and maintenance, you can obtain

Building SANs with Brocade Fabric Switches through:

http://www.amazon.com

For information about how to use Fabric OS features in a SAN solution, refer to the Principles of
SAN Design (ISBN 0-7414-2824-5), available from the SAN Administrator’s Bookshelf. You can

order the book and view a sneak preview at:

http://www.brocade.com/products/sanadmin_bookshelf/index.jsp

For additional Brocade documentation, visit the Brocade SAN Info Center and CLIck the Resource
Library location:

http://www.brocade.com

Release Notes are available on the Brocade Connect Web site and are also bundled with the Fabric
OS firmware.

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OTHER INDUSTRY RESOURCES

For additional resource information, visit the Technical Committee T11 Web site. This Web site
provides interface standards for high-performance and mass storage applications for Fibre
Channel, storage management, as well as other applications:

http://www.t11.org

For information about the Fibre Channel industry, visit the Fibre Channel Industry Association Web
site:

http://www.fibrechannel.org

For information about the iSCSI (internet small computer systems interface) standards, visit the
following Web site:

http://www.ietf.org/rfc/rfc3720.txt

OPTIONAL BROCADE FEATURES

For a list of optional Brocade features and descriptions, see the Fabric OS Administrator’s Guide.

Getting technical help

Contact your switch support supplier for hardware, firmware, and software support, including
product repairs and part ordering. To expedite your call, have the following information available:

1. General Information

- Technical Support contract number, if applicable

- Switch model

- Switch operating system version

- Error numbers and messages received

- supportSave command output

- Detailed description of the problem and specific questions

- Description of any troubleshooting steps already performed and results

- Serial console and telnet session logs

- syslog message logs

2. Switch Serial Number

The switch serial number and corresponding bar code are provided on the serial number label,
as illustrated below.

:

*FT00X0054E9*

FT00X0054E9

The serial number label is located as follows:

- Brocade 3014—On the top of the chassis, under the insertion arm

- Brocade 3016 and 4012—On the bottom of the switch module

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- Brocade 4018—On the top of the blade

- SilkWorm 3200, Brocade 200E, 3250 and 3850—On the bottom of the chassis

- SilkWorm 3800 and Brocade 3900—Nonport side of the chassis

- Brocade 5000, Brocade 4100, 4900, and 7500—On the switch ID pull-out tab located

inside the chassis on the port side on the left

- Brocade 4016—Top of the switch module

- Brocade 4024—Bottom of the switch module

- SilkWorm 12000, Brocade 24000 and 48000—Inside the chassis next to the power supply

bays

- SilkWorm Multiprotocol Router Model AP7420—On the bottom of the chassis and on the

back of the chassis.

3. World Wide Name (WWN)

- SilkWorm 3800, Brocade 200E, 3014, 3016, 3250, 3850, 3900, 4012, 4018, 4020,

4024, 4100, 4900, 5000, and 7500 switches and Brocade 24000, and 48000 directors:
Provide the license ID. Use the licenseIdShow command to display the license ID.

- SilkWorm Multiprotocol Router Model AP7420: Provide the switch WWN. Use the

switchShow command to display the switch WWN.

- All other Brocade switches: Provide the switch WWN. Use the wwn command to display the

switch WWN.

Document feedback

Because quality is our first concern at Brocade, we have made every effort to ensure the accuracy
and completeness of this document. However, if you find an error or an omission, or you think that
a topic needs further development, we want to hear from you. Forward your feedback to:

[e-mail]

Provide the title and version number and as much detail as possible about your issue, including the
topic heading and page number and your suggestions for improvement.

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Chapter

Introduction to the Brocade Access Gateway

This chapter describes the functions of Brocade Access Gateway. The Brocade 200E switch and the
Brocade 4012, 4016, 4020, and 4024 embedded switches running Fabric OS 5.3.0 or higher
support Access Gateway (AG).

In this chapter

•Overview of Brocade Access Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

•Access Gateway port types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

•Port mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

•Port initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

•Failover policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

•Failback policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1

Overview of Brocade Access Gateway

Brocade Access Gateway allows multiple host bus adapters (HBAs) to access the fabric using fewer
physical ports. Access Gateway mode transforms the 200E or an embedded switch into a device
management tool that is compatible with different types of fabrics, including Brocade-, Brocade
Enterprise OS (EOS), and Cisco- based fabrics. Refer to the matrix in Appendix B, “Compatibility” for
more details.

When a switch is in Access Gateway mode, it is logically transparent to the host and the fabric.
Brocade Access Gateway mode allows hosts to access the fabric without increasing the number of
switches and simplifies configuration and management in a large fabric by reducing the number of
domain IDs and ports.

Brocade Access Gateway is a device management tool and provides only a subset of Fabric OS
commands. It does not consume critical fabric elements that could inhibit scalability. For example,
a fabric that uses Access Gateways to connect hosts requires fewer domain IDs.

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Overview of Brocade Access Gateway

1

Figure 1 compares a configuration that connects eight hosts to the fabric using Brocade Access

Gateway to the same configuration with standard fabric switches.

FIGURE 1 Access Gateway and fabric switch comparison

The difference between the fabric switch (Fabric OS native mode) and Brocade Access Gateway is
as follows:

• The Fabric OS switch is a part of the fabric; it requires two to four times as many physical ports,

consumes fabric resources, and can connect to a Brocade-based fabric only.

• Brocade Access Gateway is outside the fabric; it reduces the number of switches in the fabric

and the number of required physical ports. You can connect Brocade Access Gateway to either
a Brocade-, Brocade EOS-, or Cisco-based fabric.

BROCADE FEATURES IN ACCESS GATEWAY MODE

When using a Brocade switch in Access Gateway mode, most features are no longer applicable.
These features include Admin Domains, Advanced Performance Monitoring, direct connection to
SAN target devices, Fibre Channel Arbitrated Loop support, Fabric Manager, FICON, IP over FC, ISL
trunking, extended fabrics, management platform services, name services (SNS), port mirroring,
Secure Fabric OS, SMI-S, and zoning. These switch features are available in the default switch
mode of operation.

Access Gateway does not support any Secure Fabric OS features. All the security enforcement is
done in the enterprise fabric. DCC policy in the enterprise fabric should include N_Port WWN and
port WWNs of all F_Ports on Access Gateway mapped to that N_Port. In case of DCC policy
violation, the port in the enterprise fabric to which N_Port is connected will be disabled. This will
bring down the corresponding N_Port and F_Ports mapped to it on Access Gateway.

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N_Port

F_Port

N_Port

F_Port

N_Port

F_Port

Hosts

Access Gateway

Edge Switch

Fabric

enabled

NPIV

N_Port

F_Port

E_Port

E_Port

N_Port

F_Port

Hosts

Edge Switch

Fabric Switch

E_Port

E_Port

Fabric

Access Gateway Ports

Fabric Switch Ports

Access Gateway port types

Brocade Access Gateway differs from a typical fabric switch because it connects to the fabric using
node ports (N_Ports). Typically fabric switches connect to the enterprise fabric using ISL
(InterSwitch Link) ports, such as an E_Port.

The following defines the Fibre Channel (FC) port terms used in this manual:

- F_Port, fabric port. A switch port that connects a host, HBA, or storage device to the SAN.

- N_Port, node port. A host, HBA, or storage device port that connects to the F_Port of the

fabric switch.

COMPARING FC PORT CONFIGURATIONS

Brocade Access Gateway multiplexes host connections to the fabric. It presents an F_Port to the
host and an N_Port to an edge fabric switch. Using N_Port ID virtualization (NPIV), Brocade Access
Gateway allows multiple FC initiators to access the SAN on the same physical port. This reduces the
hardware requirements and management overhead of hosts to the SAN connections.

A fabric switch presents F_Ports (or FL_Ports) to the host and storage devices and presents
E_Ports, TE_Ports, or EX_Ports to other switches in the fabric. A fabric switch consumes SAN
resources, such as domain IDs, and participates in fabric management and zoning distribution. A
fabric switch requires more physical ports than Brocade Access Gateway to connect the same
number of hosts.

Access Gateway port types

1

Figure 2 compares the types of ports used by the Access Gateway to those used by a typical fabric

switch.

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FIGURE 2 Port usage comparison

1

N_2

F_A2

Hosts

Access Gateway

Edge Switch

Fabric

(Switch_A)

enabled

NPIV

F_4

F_3

F_2

F_1

N_1

F_A1

enabled

NPIV

N_3

F_B1

enabled

NPIV

Host_1

Host_2

Host_3

Host_4

F_5

Host_5

F_6

Host_6

F_7

Host_7

F_8

Host_8

Edge Switch

(Switch_B)

N_4

F_B2

enabled

NPIV

Port mapping

Tab le 1 Compares port configuration between Access Gateway with a typical fabric switch.

TABLE 1 Port Configurations

Port Type Access Gateway Fabric switch

1. The switch is logically transparent to the fabric, therefore it does not participate in the SAN as a fabric switch.

Port mapping

Brocade Access Gateway uses mapping—that is, pre-provisioned routes—to direct traffic from the
hosts to the fabric. When you first enable Access Gateway mode, the F_Ports are mapped to a set
of predefined N_Ports, see Appendix A, “Default Port Mapping”. After the initial setup, you can
manually change the mapping if required.

Figure 3 shows a mapping with eight F_Ports evenly mapped to four N_Ports on Brocade Access

Gateway. The N_Ports connect to the same fabric via different edge switches. This example is also
used to explain mapping, failover, and failback polices.

F_Port Yes Connects hosts to Brocade Access

Gateway.

N_Port Yes Connects Access Gateway to a fabric

switch.

E_Port

NA ISL is not supported.

1

Yes Connects devices, such as hosts, HBAs,

and storage to the fabric.

NA N_Ports are not supported.

Yes Connects the switch to other switches to

form a fabric.

FIGURE 3 Example F_Port to N_Port mapping

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Tab le 2 describes the mapping and fabric connection shown in Figure 3.

TABLE 2 Example port mapping

Access Gateway Fabric

N_Port F_Port Edge switch F_Port

N_1 F_1, F_2 Switch_A F_A1

N_2 F_3, F_4 Switch_A F_A2

N_3 F_5, F_6 Switch_B F_B1

N_4 F_7, F_8 Switch_B F_B2

Port initialization

To ensure that all hosts are brought online when Brocade Access Gateway starts up, the ports are
initialized in the following manner:

1. All N_Ports are initialized. During N_Port initialization all the F_Ports are disabled (kept
OFFLINE).

Port initialization

1

The ports are enabled or disabled as follows:

- Enabled (online) if the port receives a fabric login event and is connected to an F_Port of

an edge switch that supports NPIV (N_Port ID virtualization).

- Disabled (offline) if the port is not connected to a fabric or is connected to a fabric port

that does not support NPIV.

2. All F_Ports mapped to online N_Ports are enabled. F_Ports that are inactive or that have no
hosts are disabled.

3. F_Ports mapped to an offline N_Port with the failover policy enabled fail over to an online
N_Port.

4. The host logs in to the fabric as follows:

a. The host sends a FLOGI (fabric login) request.

b. Access Gateway converts the FLOGI request into an FDISC request to the fabric with the

same parameters as the host.

c. The fabric processes the request and sends an FDISC response.

d. Access Gateway converts the FDISC ACC response to the host as an FLOGI ACC using the

same parameters as the fabric.

e. The host receives the response from the fabric.

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