Setup Guide

On switches running in Access Gateway mode, the masterless trunking feature trunks N_Ports because these are the only ports that
connect to the Enterprise fabric. When a TA is assigned to a port or trunk group, the ports will immediately acquire the TA as the area of
its port IDs (PIDs). When a TA is removed from a port or trunk group, the port reverts to the default area as its PID.
NOTE
By default, trunking is enabled on all N_Ports of the AG device. Verify that this feature has not been disabled on N_Ports that
are part of a port trunk group.
Trunk group creation
Port trunking is enabled between two separate Fabric OS switches that support trunking and where all the ports on each switch reside in
the same quad and are running the same speed. Trunk groups form when you connect two or more cables on one Fabric OS switch to
another Fabric OS switch with ports in the same port group or quad. A port group or a quad is a set of sequential ports; for example,
ports 0-3. The trunking groups are based on the user port number, with eight contiguous ports as one group, such as 0-7, 8-15, 16-23,
and up to the number of ports on the switch.
Setting up trunking
Use the following steps to set up trunking.
1. Connect to the switch and log in using an account assigned to the admin role.
2. Ensure that both modules (Edge switch and the switch running in AG mode) have the trunking licenses enabled.
3. Ensure that the ports have trunking enabled by issuing the portcfgshow command. If trunking is not enabled, issue the
portcfgtrunkport [ slot / ] port , 1 command.
4. Ensure that the ports within a trunk have the same speed.
5. Ensure that the ports within an ASIC trunk group are used to group the ports as part of a trunk on the Edge switch or on an AG.
6. Ensure that both modules are running the same Fabric OS versions.
Configuration management for trunk areas
The porttrunkarea command does not allow ports from different admin domains (ADs) and ports from different logical switches to join
the same trunk area (TA) group.
When you assign a TA, the ports within the TA group will 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.
Trunk area assignment example
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 3,7 in 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.
Managing Policies and Features in Access Gateway Mode
Brocade Fabric OS Access GatewayAdministration Guide
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