HP SN6000 Fibre Channel Switch User Manual
Page 25
HP StorageWorks SN6000 Fibre Channel Switch QuickTools Switch Management User Guide
25
The Transparent Router feature on the HP SN6000 Fibre Channel Switch provides inter-fabric routing to
enable controlled and limited access between devices on an HP SN6000 Fibre Channel Switch (local)
fabric and devices on a remote fabric of B-series or C-series switches.
The local fabric may consist of one or multiple HP SN6000 Fibre Channel Switches connected by their
ISLs. A specific device attached to an HP SN6000 Fibre Channel Switch can be mapped with one or more
devices in one remote fabric over only one TR_Port on that HP SN6000 Fibre Channel Switch. If a device
attached to an HP SN6000 Fibre Channel Switch is mapped with multiple devices in the same remote
fabric, the same TR_Port must be used.
A device attached to a remote fabric can be mapped with multiple devices in multiple local fabrics. If a
device in a remote fabric is mapped with multiple devices in the local fabric attached to a given HP
SN6000 Fibre Channel Switch, the same TR_Port on the HP SN6000 Fibre Channel Switch must be used
for all mappings involving that remote device. However, the same remote device can be mapped with
other local devices attached to a different HP SN6000 Fibre Channel Switch in the same local fabric over
a TR port from that switch. A remote device can be mapped through more than one TR port, as long as
each of those TR ports is on a different HP SN6000 Fibre Channel Switch.
Furthermore, you cannot map a local device to a remote device over an E_Port to another local switch and
then over a TR_Port to the remote switch. The transparent route cannot include an E_Port on the local fabric.
Local devices will not discover remote devices until the corresponding inter-fabric zones are activated on
both the local and remote fabrics. To remove a mapping, in addition to removing the local inter-fabric
zone, you must also remove the corresponding remote inter-fabric zone.
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 SN6000 Fibre Channel
Switch, and the HP StorageWorks SAN Design Reference Guide on the HP website
user (admin rights required) can configure TR mappings to
connect devices on the local HP SN6000 Fibre Channel Switch fabric with devices on remote fabrics.
The transparent route between these devices is accomplished by connecting a remote switch to a TR_port
on the HP SN6000 Fibre Channel Switch, mapping the devices together, and then creating and activating
the IFZ (inter-fabric zones) in both fabrics. Each fabric will contain a matching IFZ. Each IFZ must contain
exactly three WWN members: the local device, the remote device, and the TR_Port attached to the remote
fabric.
NOTE:
Be sure to configure the TR_Port before connecting the remote fabric to the HP SN6000 Fibre
Channel Switch. If the remote fabric is connected to a port on the HP SN6000 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 SN6000 Fibre Channel
Switch. Any of the HP SN6000 Fibre Channel Switch 8Gb ports may be configured as a TR_Port.