Fabric OS Administrator's Guide v7.0.0 (53-1002148-02, June 2011)

442 Fabric OS Administrator’s Guide
53-1002148-02
F_Port trunking
21
Table 77 describes the PWWN format for F_Port and N_Port trunk ports.
Trunk Area and Admin Domains
Ports from different ADs are not allowed to join the same Trunk Area group. The portTrunkArea
command prevents the different ADs from joining the TA group.
When you assign a TA, the ports within the TA group have the same Index. The Index that was
assigned to the ports is no longer part of the switch. Any Domain,Index (D,I) AD that was assumed
to be part of the domain may no longer exist for that domain because it was removed from the
switch.
Example of how Trunk Area assignment affects the port Domain,Index
If you have AD1: 3,8; 3,9; 4,13; 4,14 and AD2: 3,10; 3,11, and then create a TA with Index 8 with
ports that have index 8, 9, 10, and 11, then index 9, 10, and 11 are no longer with domain 3. This
means that AD2 does not have access to any ports because index 10 and 11 no longer exist on
domain 3. This also means that AD1 no longer has 3,9 in effect because Index 9 no longer exists
for domain 3. Port 3,8, which is the TA group, can still be seen by AD1 along with 4,13 and 4,14.
If a port within a TA is removed, the Index is added back to the switch. For example, the same AD1
and AD2 with TA 8 holds true. If you remove port 9 from the TA, it adds Index 9 back to the switch.
That means port 3,9 can be seen by AD1 along with 3,8; 4,13 and 4,14.
F_Port trunking in Virtual Fabrics
F_Port trunking functionality performs the same in Virtual Fabrics as it does in non-virtual fabric
platforms except for the Brocade DCX and DCX 8510-8. Fabric OS uses a 10-bit addressing model,
which is the default mode for all dynamically created logical switches in the DCX platform.
In the DCX and DCX 8510 platforms, F_Port trunk ports dynamically receive an 8-bit area address
that remains persistent. After F_Port trunking configurations are removed from a port in a logical
switch, that port returns to the default 10-bit area address model, which supports up to 1024
F_Ports in a logical switch.
QoS Supported.
Routing Routing will route against the F_Port trunk master. Bandwidth information will be modified
accordingly as the F_Port trunk forms.
Trunk Master No more than one trunk master in a trunk group. The second trunk master will be
persistently disabled with reason "Area has been acquired”.
Upgrade There are no limitations on upgrading to Fabric OS v7.0.0 if the F_Port is present on the
switch. Upgrading is not disruptive.
TABLE 77 PWWN format for F_Port and N_Port trunk ports
NAA = 2 2f:xx:nn:nn:nn:nn:nn:nn
(1)
Port WWNs for:
switch’s Fx_Ports.
The valid range of xx is [0 - FF],
for maximum of 256.
NAA = 2 25:xx:nn:nn:nn:nn:nn:nn
(1)
Port WWNs for:
switch's FX_Ports
The valid range of xx is [0 - FF],
for maximum of 256.
TABLE 76 F_Port masterless considerations (Continued)
Category Description