HP-UX Installation

Interpreting Hardware Paths

 

 

Fibre Channel Topology of HBA

Field

Value Information

Fabric Topologies such as Public

 

Private Loop

 

 

 

 

 

 

Loop and Direct Fabric Attach

 

 

 

 

 

 

 

 

 

 

Domain

The value depends

This field is typically the Domain ID

 

This field is set to 8.

 

on the Fibre

of the switch to which the target

 

 

 

Channel topology of

device is attached. The value of

 

For historical reasons, HP-UX

 

the HBA.

this field is taken from the most

 

uses a Domain ID of 8 to indicate

 

 

significant byte of the N_Port ID of

 

Private Loops. Fibre Channel

 

 

the target device.

 

switches seen by HP-UX hosts

 

 

 

 

cannot be configured with

 

 

 

 

Domain ID of 8; doing so is

 

 

 

 

unsupported and will not work.

 

 

 

 

 

Area

The value depends

This field is taken from the second

 

This field is set to 0.

 

on the Fibre

byte of the N_Port ID of the target

 

 

 

Channel topology of

device.

 

 

 

the HBA.

On some switches, the second byte of

 

 

 

 

 

 

 

 

the N_Port ID encodes the switch

 

 

 

 

port to which the device is

 

 

 

 

connected. How this encoding is

 

 

 

 

done depends on the switch. Consult

 

 

 

 

the relevant switch manual to

 

 

 

 

interpret this field.

 

 

 

 

 

 

 

Port

The value depends

For LUNs with Peripheral Device

 

For LUNs with Peripheral Device

 

on the Fibre

Addressing, the value of this field is

 

Addressing, the value of this field

 

Channel topology of

always 255.

 

is always 255.

 

the HBA and the

 

 

 

 

target device, and on

For other LUN methods, the value of

 

For other LUN methods, the

 

the LUN addressing

this field is the least significant byte

 

value of this field is the Loop ID

 

method used.

of the N_Port ID of the target device.

 

of the target device.

 

 

 

 

 

Bus

The value depends

For LUNs with Peripheral Device

 

For LUNs with Peripheral Device

 

on the Fibre

Addressing, the value of this field is

 

Addressing, the value of this field

 

Channel topology of

the upper 4-bits of the least

 

is the upper 4-bits of the Loop

 

the HBA and the

significant byte of the N_Port ID of

 

ID of the target device.

 

target device, and on

the target device.

 

 

 

the LUN addressing

 

 

 

 

For LUNs with Logical Unit Addressing, the value is the Bus Number

 

method used.

 

field of the Logical Unit Number.

 

 

 

 

 

 

 

 

For LUNs with Volume Set Addressing (Flat Space Addressing), the

 

 

value is bits 7 - 13 of the Logical Unit Number

 

 

 

 

 

14

Chapter 1