Brocade Fabric OS Administrator's Guide Supporting Fabric OS v6.3.0 (53-1001336-02, November 2009)

Fabric OS Administrator’s Guide 453
53-1001336-02
F_Port masterless trunking
19
Assigning a Trunk Area
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 : How Trunk Area assignment affect the port Domain,Index
If you have AD1: 3,7; 3,8; 4,13; 4,14 and AD2: 3,9; 3,10, and then create a TA with Index 8 with
ports that have index 7, 8, 9, and 10, then index 7, 9, and 10 are no longer with domain 3. This
means that AD2 does not have access to any ports because index 9 and 10 no longer exist on
domain 3. This also means that AD1 no longer has 3,7in effect because Index 7 no longer exists for
domain 3. AD1's 3,8, which is the TA group, can still be seen by AD1 along with 4,13 and 4,14.
A port within a TA can be removed, but this adds the Index back to the switch. For example, the
same AD1 and AD2 with TA 8 holds true. If you remove port 7 from the TA, it adds Index 7 back to
the switch. That means AD1's 3,7 can be seen by AD1 along with 3,8; 4,13 and 4,14.
When you assign an area within a trunk group, that group is F_Port masterless trunking enabled.
The TA that you assign must be within the 8-port trunk group beginning with port 0 (zero). After you
assign a TA to a port, the port immediately acquires the TA as the area of its PID. Likewise, after you
remove a TA from a port, the port immediately acquires the default area as its PID. F_Port trunking
prevents reassignments of the Port ID also referred to as the Address Identifier. Table 88 shows an
example of an Address Identifier.
QoS Not currently supported.
D.I. Zoning
(D,I) AD
(D, I) DCC and (PWWN, I) DCC
Creating a Trunk Area may remove the Index ("I") from the switch to be grouped to
the Trunk Area. All ports in a Trunk Area share the same "I". This means that
domain,index (D,I), which refer to an "I" that might have been removed, will no
longer be part of the switch.
Note: Ensure to include AD, zoning, and DCC when creating a Trunk Area.
You can remove the port from the Trunk Area to have the "I" back into effect. D,I
behaves as normal, but you may see the effects of grouping ports into a single "I".
Also, D,I continues to work for Trunk Area groups. The "I" can be used in D,I if the "I"
was the "I" for the Trunk Area group.
Note: “I” refers to Index and D,I refers to Domain,Index.
TABLE 88 Address identifier
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Domain ID Area_ID Port ID
Address Identifier
TABLE 87 F_Port masterless trunking considerations (Continued)
Category Description