HP StorageWorks SN6000 Fibre Channel Switch Installation and Reference Guide 27
You can connect multiple SN6000 Fibre Channel Switches to one or more remote fabrics using multiple
TR_Ports. Local and remote devices are identified by their respective port worldwide names. Consider the
following mapping rules:
• A TR_Port can support a maximum of 32 local device/remote device mappings.
• A specific local device can be mapped to devices on only one remote fabric. Local devices on the same
SN6000 Fibre Channel Switch can each be mapped to different remote fabrics.
• For mappings between a specific SN6000 Fibre Channel Switch and a remote fabric, each local
device or remote device can be mapped over only one TR_Port. Additional mappings to either device
must use that same TR_Port.
• Multiple local devices connected to different local switches can be mapped to the same remote device
over one TR_Port on each local switch.
• A local device cannot be mapped over an E_Port to another local switch, then over a TR_Port to the
remote device. The local switch to which the local device is connected must connect directly to the
remote fabric over a TR_Port.
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.
You can configure transparent routing using QuickTools or the CLI, though QuickTools is recommended
because it validates your entries, manages the zone mapping for the local fabric, and creates a list of
zoning commands that can be run in a script on a HP StorageWorks B-series or C-series SAN switch. For
more detailed information, see the HP StorageWorks SN6000 Fibre Channel Switch QuickTools Switch
Management User Guide and the HP StorageWorks SN6000 Fibre Channel Switch Command Line
Interface Guide.
IMPORTANT: Since C-series switches do not support the Unzoned Name Server, 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 zoneset must be changed to add zones so that the WWNs of the
remote devices to be mapped and the WWNs of the SN6000 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 zoneset after completion of the TR mapping as a best practice, until you no
longer need to map the device to the local fabric.
To configure transparent routing using QuickTools:
1. Determine what devices on the local fabric require access to devices on the remote fabric. Local devices
must be attached directly to the SN6000 Fibre Channel Switch.
2. Configure one or more TR_Ports on the local SN6000 Fibre Channel Switch first and then connect the
TR_Port to the remote fabric. QuickTools prompts you to configure TR_Ports where existing port
connections to remote fabrics have isolated. For remote HP StorageWorks 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. Other B-series or C-series
switches in the remote fabric need not support NPIV.
NOTE: Be sure to configure the TR_Port before connecting the remote fabric to the HP
StorageWorks SN6000 Fibre Channel Switch. If the remote fabric is connected to a port on the HP
StorageWorks 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.
