Trunking For Access Gateway - HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual
Hp storageworks fabric os 6.1.1 administrator guide (5697-0235, december 2009)
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Also See for A7533A - Brocade 4Gb SAN Switch Base:
- Administrator's manual (576 pages) ,
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Example: How Trunk Area assignment affects 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, 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.
Trunking for Access Gateway
On switches running in Access Gateway mode, the masterless trunking feature trunks N_Ports because only
the external port or the N_Port can connect to an AG switch. After you map or assign F_Ports to an N_Port,
the N_Port distributes frames across a set of available path links on the AG switch to an adjacent edge
switch. Following are the advantages of N_Port trunking:
•
When one or more N_Ports in a trunk group goes offline, there is no change in the PID for the F_Ports)
that were mapped to the N_Port(s) as long as at least one N_Port in the trunk group is active. This
provides for a transparent path failover and failback within the trunk group.
•
N_Port links are more efficient because of the trunking algorithm implemented in the switching ASICs
that distributes the I/O more evenly across the N_Ports.
•
Trunk groups cannot span across multiple N_Port groups within a switch in AG mode.
•
Multiple trunk groups are allowed within the same N_Port group.
For additional information on how to configure ports in Access Gateway mode, see the Access Gateway
Administrator's Guide.
384 Administering ISL trunking
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