System information

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Cisco SN 5428-2 Storage Router Software Configuration Guide
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Chapter 12 Command Line Interface Reference
interface fc? type
• A GL_Port configures as an FL_Port when connected to a loop of public devices, an F_Port when
connected to a single device, or an E_Port when connected to another SN 5428-2 or an FC-SW-2
compliant switch. A GL_Port may also configure as an E_Port when connected to a switch running
non-FC-SW-2 compliant firmware.
• A G_Port configures as an F_Port when connected to a single public device or an E_Port when
connected to another SN 5428-2 or an FC-SW-2 compliant switch. A G_Port may also configure as
an E_Port when connected to a switch running non-FC-SW-2 compliant firmware.
• An F_Port supports connection to a single public device (N_Port).
• An FL_Port supports connection to a loop of up to 126 public devices (NL_Port).
• A TL_Port supports connection to a loop of up to 126 private devices with the ability to
communicate with “off-loop” devices, such as public fabric devices and private devices on other
TL_Ports. TL_Ports connect to devices that confirm to the Fibre Channel-Private Loop SCSI Direct
Attach (FC-PLDA) standard. A TL_Port acts as a proxy for the off-loop device, translating private
frames to and from public frames. Each TL_Port can proxy up to 64 off-loop devices.
• A donor port type indicates that the interface is donating its buffer credits and is not used for FC
devices. Each donor ports donates 11 buffer credits to the pool. All of the 11 credits must go to a
single recipient interface, configured for credit extension.
Public devices have full Fibre Channel addressing capability and can communicate with any other public
device on the fabric; private devices do not have full FC addressing capability. Private devices have only
the Arbitrated Loop Physical Address (ALPA) portion.
Note All storage routers in a cluster should be configured with the same interface-specific parameters,
allowing failover of SCSI routing instances to provide consistent performance characteristics.
Examples The following example sets the port type to fabric for the FC interface named fc6:
[SN5428-2A]# interface fc6 type f-port
The following example set the port type to translated loop for the FC interface named fc3. The mode is
autolearn, so targets in private loop are made visible.
[SN5428-2A]# interface fc3 type tl-port mode autolearn
The following example sets the port type for interface fc1 to F_Port, sets the port type for interface fc8
as donor (making 11 buffer credits available to the interface fc1), and configures interface fc1 for credit
extension:
[SN5428-2A]# interface fc1 type f-port
*[SN5428-2A]# interface fc8 type donor
*[SN5428-2A]# interface fc1 ext-credit 11