HP StorageWorks Fabric OS 5.0.0 Command Reference Guide (AA-RW1MA-TE, May 2005)

Fabric OS 5.0.0 command reference guide 593

Sets or displays SPLB mode.

Synopsis

setsplbmode [mode | -show]

Availability

admin

Description

Use this command to enable MFG mode if mode is a nonzero, and disable SPLB mode if mode is 0. The

mode is saved in flash memory and stays in that mode until the next execution of setSplbMode. The

mode becomes active as soon as this command is executed. It does not require a reboot to take effect.

The SPLB mode, when enabled, forces the spinSilk command to disable two-port loopback for

M->M connected ports. This might be useful to isolate internal switch problems from SFP problems since

the internal paths are used much less with SPLB mode enabled.

Disabling SPLB mode, forces the spinSilk command to circulate frames between pairs of M->M

connected ports as follows:

P1 TX >>> P1 RX -> P2 TX >>> P2 RX -> P1 TX

>>> is a cable or internal loopback .

-> is a routing table entry.

The connections between pairs of M->M ports are chosen to exercise the connections between as many

chips (or bloom quadrants) as possible, subject to the setting of allow_intra_chip and the availability of

pairs of M->M ports.

Any ports that are cross-cabled are routed to each other in the normal manner, regardless of the setting of

SPLB mode:

P1 TX >>> P2 RX -> P1 TX

P2 TX >>> P1 RX -> P2 TX

Operands

This command has the following operands: :

Examples

To enable or disable a two-port loopback: