HP StorageWorks 8/80 HP StorageWorks Fabric OS 6.2 administrator guide (5697-0 - Page 450

Table 87 F_Port masterless trunking considerations Category Description Area assignment Statically assign the area within the trunk group on the edge switch. That group is the F_Port masterless trunk. The static trunk area you assign must fall within the ASIC's trunk group of the switch or blade starting from port 0 and must be one of the port's default areas of the trunk group. Authentication 10-bit addressing is the default mode for all dynamically created partitions in the HP StorageWorks DC SAN Backbone Director platform. Authentication occurs only on the F_Port trunk master port and only once per the entire trunk. This behavior is the same as E_Port trunk master authentication. Because only one port in the trunk does FLOGI to the switch, and authentication follows FLOGI on that port, only that port displays the authentication details when you enter the portShow command. Management Server Trunk Area PWWN Downgrade Note: Switches in Access Gateway mode do not perform authentication. Registered Node ID (RNID), Link Incident Record Registration (LIRR), and (QSA) Query Security Attributes ELSs are not supported on F_Port trunks. The port must be disabled before assigning a Trunk Area on the edge switch to the port or removing a Trunk Area from a trunk group. You cannot assign a Trunk Area to ports if the standby CP is running a firmware version earlier than Fabric OS 6.2.0. The entire Trunk Area trunk group share the same Port WWN within the trunk group. The PWWN is the same across the F_Port trunk that will have 0x2f or 0x25 as the first byte of the PWWN. The TA is part of the PWWN in the format listed in Table 88 on page 448. You can have trunking on, but you must disable the trunk ports before performing a firmware downgrade. Upgrade HA Sync Port types Default Area Note: Removing a Trunk Area on ports running traffic is disruptive because you must disable the port to disable the Trunk Area on the port. Use caution before assigning a Trunk Area if you need to downgrade to a firmware earlier than Fabric OS 6.2.0. There are no limitations on upgrading to Fabric OS 6.2.0 if the F_Port is present on the switch. Upgrading is not disruptive. If you plug in a standby CP with a firmware earlier than Fabric OS 6.2.0 and a Trunk Area is present on the switch, the CP blades will become out of sync. Only F_Port trunk ports are allowed on a Trunk Area port for Fabric OS 6.2.0. All other port types that include F/FL/E/EX are persistently disabled in Fabric OS 6.2.0. Port X is a port that has its Default Area the same as its Trunk Area. The only time you can remove port X from the trunk group is if the entire trunk group has the Trunk Area disabled. 446 Administering ISL trunking