Transparent Routing - HP AK241A - StorageWorks 8Gb Simple SAN Connection Installation And Reference Manual

Transparent routing

IMPORTANT:
8/20q Fibre Channel Switches with active TR_Ports; however, SSCM cannot manage or discover remote
switches or devices in the remote fabric. Use QuickTools and the storage management interface to present
Logical Unit Numbers (LUNs) to remote devices. SSCM displays the remote fabric as a grayed-out switch,
but no management can be performed. SSCM version 2.0 and earlier versions do not support the
management of fabrics that include 8/20q Fibre Channel Switches with active TR_Ports and may disrupt
communication between the 8/20q Fibre Channel Switch and the remote fabric. If you intend to manage
the SAN using SSCM, be sure to use SSCM version 2.10 or later.
The transparent routing feature provides inter-fabric routing to allow controlled and limited access between
devices on a 8/20q Fibre Channel Switch (local) fabric and devices on a remote fabric consisting of
B-Series or C-Series switches. For a list of switches that are supported in a remote fabric, see the HP
StorageWorks 8/20q Fibre Channel Switch release notes, and the HP StorageWorks SAN Design
reference guide located at the HP website: http://www.hp.com/go/sandesignguide. This type of
inter-fabric connection uses the Fibre Channel industry N-Port ID Virtualization (NPIV), and makes local
and remote devices accessible to each other while maintaining the local and remote fabrics as separate
fabrics.
You can connect multiple 8/20q 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
8/20q Fibre Channel Switch can each be mapped to different remote fabrics.
• For mappings between a specific 8/20q 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.
• Mulitple 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:
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 information, see the HP StorageWorks 8/20q Fibre Channel Switch QuickTools Switch Management
User Guide and the HP StorageWorks 8/20q Fibre Channel Switch Command Line Interface Guide.
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 8/20q Fibre Channel Switch.
2. Configure one or more TR_Ports on the local 8/20q Fibre Channel Switch, 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
The Simple SAN Connection Manager (SSCM) application version 2.10 can manage
When a local device is mapped over a TR_Port to a remote device, the local device and its
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