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

Access Gateway Administrator’s Guide 5

53-1000605-02

Upgrade and downgrade considerations

Downgrading to Fabric OS v6.0.0 or earlier is supported; however, you must first disable the switch

from AG mode. Note the following considerations when upgrading and downgrading from Fabric OS

v6.1.0 to Fabric OS v6.0.0 and earlier:

• Not allowed if any F_Port trunk is active.

• Trunking must be disabled before downgrading.

• When a switch is set in AG mode, if you downgrade to v6.0.0x, all preferred settings are

lost.

Considerations with policies enabled

Note the following upgrade and downgrade considerations when the Brocade policies are enabled.

Advance Device Security policy

If ADS is enabled, downgrading to v6.0 is allowed, however the ADS policy is not supported in

v6.0.0.

Automatic Port Configuration policy

If you upgrade from Fabric OS v6.0.x to Fabric OS v6.1.0, by default, the APC policy is disabled. If

the APC is enabled, you can downgrade from Fabric OS v6.1.0 to Fabric OS v6.0.0.

Port Grouping policy

If you upgrade from v6.0.0 to v6.1.0, then the PG policy is enabled with the default port group pg0

containing all the N_Ports. If the PG policy is enabled, you can downgrade from Fabric OS v6.1.0 to

Fabric OS v6.0.0.

TABLE 2 Description of F_Port-to-N_Port mapping

Access Gateway Fabric

F_Port N_Port Edge switch F_Port

F_1, F_2 N_1 Switch_A F_A1

F_3, F_4 N_2 Switch_A F_A2

F_5, F_6 N_3 Switch_B F_B1

F_7, F_8 N_4 Switch_B F_B2