Brocade Access Gateway Admin Guide v6.1.0 (53-1000605-02, June 2008)

4 Access Gateway Administrator’s Guide
53-1000605-02
How Access Gateway maps ports
1
Table 1 shows a comparison of port configurations with AG to a standard fabric switch.
How Access Gateway maps ports
Access Gateway uses mapping—that is, pre provisioned routes—to direct traffic from the hosts to
the fabric. When you first enable a switch to AG mode, by default, the F_Ports are mapped to a set
of predefined N_Ports. For the default F_Port-to-N_Port mapping, see Table 9 on page 51. If
required, you can manually change the default mapping. Figure 3 shows a mapping with eight
F_Ports evenly mapped to four N_Ports on a switch in AG mode. The N_Ports connect to the same
fabric through different edge switches.
FIGURE 3 Example F_Port-to-N_Port mapping
TABLE 1 Port configurations
Port Type Access Gateway Fabric switch
F_Port Yes Connects hosts and targets to
Access Gateway.
Yes Connects devices, such as hosts, HBAs,
and storage to the fabric.
N_Port Yes Connects Access Gateway to a fabric
switch.
NA N_Ports are not supported.
E_Port NA ISL is not supported.
1
1. The switch is logically transparent to the fabric, therefore it does not participate in the SAN as a fabric switch.
Yes Connects the switch to other switches to
form a fabric.
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