Brocade Access Gateway Administrator's Guide (Supporting Fabric OS v7.3.0) - Manual (Page 23)

The figure below shows a comparison of the types of ports a switch in AG mode uses to the type of
ports that a switch uses in standard mode.
FIGURE 3 Port usage comparison
You can convert a Fibre Channel port into a D_Port on AG switch and a connected fabric switch,
another AG switch (cascaded configuration), or an HBA to test the link between the ports. When you
configure the ports on each end of the link as D_Ports, diagnostic tests automatically initiate on the link
when the D_Ports go online. Results can be viewed using Fabric OS commands, such as
Access Gateway Basic Concepts
Access Gateway Administrator's Guide 21
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