Brocade Access Gateway Administrator's Guide v6.2.0 (53-1001189-01, April 2009)

Access Gateway Administrator’s Guide 45
53-1001189-01
Chapter
4
Configuring Ports in Access Gateway mode
In this chapter
•Port Initialization in Access Gateway mode . . . . . . . . . . . . . . . . . . . . . . . . . . 45
•N_Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
•Port configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Port Initialization in Access Gateway mode
This chapter explains how to configure ports in Access Gateway mode and how to implement
Access Gateway masterless trunking. You must have the role of securityadmin, admin, or user to
configure AG.
To ensure that all hosts are brought online when a switch in Access Gateway mode starts up, the
ports are initialized in the following manner:
1. When you enable a switch to AG mode, N_Ports are initialized only if they belong to the default
factory configuration of the switch. During N_Port initialization all the F_Ports are disabled
(kept offline).
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.
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 into 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 Accept link service reply (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.
Figure 10 shows Access Gateway logically transparent to the host and the fabric after
ports are initialized.