HP StorageWorks 8/20q and SN6000 Fibre Channel Switch Enterprise Fabric Management Suite User Guide 43
NOTE: When a local device is mapped over a TR_Port to a remote device, the local device and its
TR_Port appear as an NPIV connected device in the remote fabric. It is possible, though not recommended,
to map such a local device over a second TR_Port to a local device in a second local fabric. In this case, if
you merge the two local fabrics, the transparent route becomes inactive for the devices that now have a
path over an ISL, and an alarm is generated.
For details of switches supported in a remote fabric, see release notes for the HP H-Series Fibre Channel
Switch, and the HP StorageWorks SAN Design Reference Guide on the HP website
http://www.hp.com/go/sandesignguide.
You can configure TR mappings to connect devices on the local HP H-Series Fibre Channel Switch fabric
with devices on remote fabrics. To establish a transparent route between devices:
1. Connect a remote switch to a TR_port on the HP H-Series Fibre Channel Switch.
2. Map the devices together.
3. Create and activate the inter-fabric zones (IFZ) in both fabrics. Each fabric contains a matching IFZ,
which must contain exactly three WWN members: local device, remote device, and TR_Port attached to
the remote fabric.
NOTE: Be sure to configure the TR_Port before connecting the remote fabric to the HP H-Series Fibre
Channel Switch. If the remote fabric is connected to a port on the HP H-Series Fibre Channel Switch that is
not a TR_Port, the two fabrics may establish an E_Port connection and the local and remote fabrics may
merge. This mixed fabric is not a supported configuration. If the port type is changed to TR_Port after
connecting the remote fabric, a port reset may be required to completely establish the TR connection.
A TR_Port is used as a bridge between the transparent router’s local fabric and a remote fabric. A TR_Port
uses standard NPIV login methods to attach to the remote fabric. For remote B-series or C-series fabrics, the
switch to which the TR_Port connects must support N-Port ID Virtualization (NPIV) and for B-series fabrics the
interoperability mode must be configured to InteropMode=0. The TR_Port logs into the remote fabric using
the WWN of the TR_Port. The TR_Port accesses fabric services of the remote fabric, such as Name Server
and Management Server, and may receive registered state change notifications (RSCNs). The TR_Port uses
FDISCs to login proxies for devices attached to an N_Port on the HP H-Series Fibre Channel Switch. Any of
the HP H-Series Fibre Channel Switch 8Gb ports may be configured as a TR_Port.
IMPORTANT: Because C-series switches do not support Unzoned Name Server queries (which are an
option of the Fibre Channel standard), C-series fabrics must be “pre-zoned” before you can set up TR
mappings to a remote C-series fabric using the TR Mapping Manager dialog box. The C-series fabric zone
set must be changed to add zones so that the WWNs of the remote devices to be mapped and the
WWNs of the HP H-Series Fibre Channel Switch TR ports are zoned together. For more information, see
the C-series documentation for specific information to configure zoning. Retain these zones in the zone set
after completion of the TR mapping as a best practice, until you no longer need to map the device to the
local fabric.
Viewing inter-fabric routes
You can view inter-fabric routes in the Transparent Routes data window and the TR Mapping Manager
dialog box.
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