Brocade Access Gateway Administrator's Guide - Supporting Fabric OS v5.3.0 (53-1000633-01, June 2007)

Access Gateway Administrator’s Guide 5
53-1000633-01
Port initialization
1
Table 2 describes the mapping and fabric connection shown in Figure 3.
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).
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.
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