SAN Configuration with Access Gateway
Connectivity of multiple devices overview.......................................................................89
Direct target attachment..................................................................................................89
Target aggregation..........................................................................................................91
Access Gateway cascading............................................................................................92
Fabric and Edge switch configuration.............................................................................93
Connectivity to Cisco fabrics...........................................................................................94
Rejoining Fabric OS switches to a fabric........................................................................95

Connectivity of multiple devices overview

This chapter describes how to connect multiple devices to a switch in Access Gateway (AG) mode, and
discusses Edge switch compatibility, target aggregation, direct target attachment, port requirements,
NPIV HBA, and interoperability. Switches in AG mode can connect to third-party fabrics with the
following firmware versions:
Fabrics operating with M-EOSc v9.6.2 or later and M-EOSn v9.6 or later.
Cisco fabrics that support standards-based NPIV.

Considerations for connecting multiple devices

Consider the following points when connecting multiple devices to a switch in AG mode:
AG does not support daisy chaining when two AG devices are connected to each other in a loop
configuration.
Loop devices and FICON channels/control unit connectivity are not supported.
When a switch is in AG mode, it can be connected to NPIV-enabled HBAs, or F_Ports that are NPIV-
aware. Access Gateway supports NPIV industry standards per FC-LS-2 v1.4.

Direct target attachment

FCP targets can directly connect to an AG module instead of through a fabric connection, as illustrated
in the figure below.
Access Gateway Administrator's Guide 89
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