HP StorageWorks 2/16V Brocade Access Gateway Administrator's Guide - Supportin - Page 13

Introduction to the Brocade Access Gateway, Overview of Brocade Access Gateway - transformer

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Introduction to the Brocade Access Gateway Chapter 1 This chapter describes the functions of Brocade Access Gateway. The SilkWorm 4012, 4016, 4020, and 4024 embedded switches running Fabric OS v5.2.1 or higher support Access Gateway (AG). The chapter covers the following topics: • "Overview of Brocade Access Gateway" on page 1-1 • "Access Gateway port types" on page 1-2 • "Port mapping" on page 1-4 • "Port initialization" on page 1-5 • "Failover policy" on page 1-6 • "Failback policy" on page 1-7 Overview of Brocade Access Gateway Brocade Access Gateway allows multiple hosts (or HBAs) to access the fabric using fewer physical ports. Access Gateway mode transforms an embedded switch into a device management tool that is compatible with different types of fabrics, including Brocade-, Cisco-, and McDATA-based fabrics (see 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 modes 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. Access Gateway Administrator's Guide 1-1 Publication Number: 53-1000430-01

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Access Gateway Administrator’s Guide
1-1
Publication Number: 53-1000430-01
Chapter
1
Introduction to the Brocade Access Gateway
This chapter describes the functions of Brocade Access Gateway. The SilkWorm
4012, 4016, 4020, and
4024 embedded switches running Fabric OS v5.2.1 or higher support Access Gateway (AG).
The chapter covers the following topics:
•
“Overview of Brocade Access Gateway”
on page 1-1
•
“Access Gateway port types”
on page 1-2
•
“Port mapping”
on page 1-4
•
“Port initialization”
on page 1-5
•
“Failover policy”
on page 1-6
•
“Failback policy”
on page 1-7
Overview of Brocade Access Gateway
Brocade Access Gateway allows multiple hosts (or HBAs) to access the fabric using fewer physical
ports. Access Gateway mode transforms an embedded switch into a device management tool that is
compatible with different types of fabrics, including Brocade-, Cisco-, and McDATA-based fabrics (see
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 modes 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.