HP StorageWorks 1606 HP StorageWorks Fabric OS 6.3.0c Release Notes (5697-0361 - Page 34

-Gb link initialization and fill words, Overview, portCfgFillWord command, command

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When connecting to an extension device that does not support ARB primitives (such as some TDM products), the following configuration must be used: • portcfgqos -disable • portcfgcreditrecovery -disable • portcfglongdistance 0 The fabric parameter fabric.ops.mode.longdistance is now deprecated and should not be used. 8-Gb link initialization and fill words This section describes the portCfgfillWord command that was first introduced in Fabric OS 6.1.2 and 6.2.0d. Overview The Fibre Channel Physical Interfaces (FC-PI) standard defines the requirements for a physical layer. It considers all aspects of transmit, receive, and cable-plant performance requirements for optical and electrical links. The FC-PI standard has been modified to support new physical-layer variants that operate at higher data rates than those specified in FC-PI-2. The standard enables interoperability of transmitter devices, receiver devices, interconnects, and components from different manufacturers. New variants include support for a data rate of 800 MB/s. The previous implementation by Brocade was to use Idles for link initialization and as fill words, which works for 1-Gb, 2-Gb, 4-Gb, and most 8-Gb devices. However, some of the new 8-Gb devices have problems with the Idle/Idle sequence at 8 Gb. 8-Gb switches, HBAs, and smaller mid-range 8-Gb storage devices are using the Idle/Idle sequences without any problems. Some of the new 8-Gb devices require that the ARB(FF)/ARB(FF) sequence have successful link initialization. Brocade has developed an implementation of ARB(FF)/ARB(FF) for initialization and fill words. The portcfgfillword command configures the ARB(FF)/ARB(FF) implementation. portCfgFillWord command The portCfgFillWord command configures the fill word for a single 8-Gb FC port. • Syntax: portcfgfillword [slotnumber/]portnumber, mode • Description: Use this command to configure the fill word for an 8-Gb FC port. (It does not apply to a non-8-Gb FC port.) This command disables and re-enables the port; the port comes online with the new fill-word setting. The configuration is stored in nonvolatile memory and is persistent across switch reboots and power cycles. • Notes: This configuration cannot be set on VE_Ports or VEX_Ports. Use the portCfgShow command to display user-configured fill-word settings. The execution of this command is subject to any Administrative Domain or VF restrictions. • Operands: This command has the following operands: • slotnumber-For blade systems only, specifies the slot number of the port to be configured, followed by a slash (/). • portnumber-Specifies the number of the port to be configured, relative to its slot for blade systems. Use the switchShow command to display a list of valid ports. • mode-Specifies the fill word for portnumber. This operand is required. Valid values are as follows: • 0-IDLE in Link Init and IDLE as fill word (default) 34

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When connecting to an extension device that does not support ARB primitives (such as some TDM
products), the following configuration must be used:
•
portcfgqos -disable <port>
•
portcfgcreditrecovery –disable <port>
•
portcfglongdistance <port><LD|LD>0<distance>
The fabric parameter
fabric.ops.mode.longdistance
is now deprecated and should not be
used.
8-Gb link initialization and fill words
This section describes the
portCfgfillWord
command that was first introduced in Fabric OS 6.1.2
and 6.2.0d.
Overview
The Fibre Channel Physical Interfaces (FC-PI) standard defines the requirements for a physical layer.
It considers all aspects of transmit, receive, and cable-plant performance requirements for optical and
electrical links. The FC-PI standard has been modified to support new physical-layer variants that
operate at higher data rates than those specified in FC-PI-2. The standard enables interoperability of
transmitter devices, receiver devices, interconnects, and components from different manufacturers.
New variants include support for a data rate of 800 MB/s. The previous implementation by Brocade
was to use Idles for link initialization and as fill words, which works for 1-Gb, 2-Gb, 4-Gb, and most
8-Gb devices. However, some of the new 8-Gb devices have problems with the Idle/Idle sequence
at 8 Gb. 8-Gb switches, HBAs, and smaller mid-range 8-Gb storage devices are using the Idle/Idle
sequences without any problems. Some of the new 8-Gb devices require that the ARB(FF)/ARB(FF)
sequence have successful link initialization. Brocade has developed an implementation of
ARB(FF)/ARB(FF) for initialization and fill words. The
portcfgfillword
command configures the
ARB(FF)/ARB(FF) implementation.
portCfgFillWord
command
The
portCfgFillWord
command configures the fill word for a single 8-Gb FC port.
•
Syntax:
portcfgfillword [slotnumber/]portnumber, mode
•
Description:
Use this command to configure the fill word for an 8-Gb FC port. (It does not apply
to a non-8-Gb FC port.) This command disables and re-enables the port; the port comes online
with the new fill-word setting. The configuration is stored in nonvolatile memory and is persistent
across switch reboots and power cycles.
•
Notes:
This configuration cannot be set on VE_Ports or VEX_Ports. Use the
portCfgShow
command
to display user-configured fill-word settings. The execution of this command is subject to any Ad-
ministrative Domain or VF restrictions.
•
Operands:
This command has the following operands:
•
slotnumber
—
For blade systems only, specifies the slot number of the port to be configured,
followed by a slash (/).
•
portnumber
—
Specifies the number of the port to be configured, relative to its slot for blade
systems. Use the
switchShow
command to display a list of valid ports.
•
mode
—
Specifies the fill word for
portnumber
. This operand is required. Valid values are as
follows:
•
0
—
IDLE in Link Init and IDLE as fill word (default)
34