HP StorageWorks Fabric OS 6.3.3d Release Notes (5697-0493, May 2010 - includes all 6.3.0x versions)

• The Port Fencing feature is not supported for Loss of Sync (LOS) and Link Failure (LF) areas of
Port/F-Port/E-Port classes. State change area can be used in place of LOS/LF areas for Port Fencing.
ICLs
• If a DC SAN Director with an 8-link ICL license is connected to a DC SAN Director with a 16-link
license, the DC SAN Director with the 16-link license will report enc_out errors. The errors are
harmless, but will continue to increment. These errors will not be reported if a DC SAN Director
with a 16-link license is connected to a DC04 SAN Director with only 8-link ICL ports.
• If ICL ports are disabled on only one side of an ICL link, the enabled side may see enc_out errors.
Extended Fabrics and R_RDY flow control
• Starting with Fabric OS 5.1, the Extended Fabrics feature is supported with R_RDY flow control.
(R_RDY flow control mode can be enabled using the portCfgISLMode command.) R_RDY flow
control mode that uses IDLE primitives does not support frame-based trunking for devices such as
Time Division Multiplexor (TDM). To overcome this limitation and provide support for frame-based
trunking with Extended Fabrics, Fabric OS 6.2.x and later has been enhanced to support interop-
erability with these distance extension devices.
Fabric OS 6.3.0 and later allows Extended Fabrics E_Ports to operate in VC_RDY mode using
either ARB or IDLE primitives as fill words. This allows frame-based trunking to be supported on
Extended Fabrics E_Ports even when IDLE primitives are configured for these ports when operating
in native VC_RDY mode. Prior to this change, frame-based trunking was supported only when ARB
primitives were used in VC_RDY mode. With Fabric OS 6.2.x, frame-based trunking is supported
on Extended Fabrics E_Ports even if IDLE or ARB primitives are used when operating in native
VC_RDY mode.
Implementation
The portcfglongdistance CLI parameter VC Translation Link Init is now overloaded
to specify whether the long-distance link should use IDLE or ARB primitives. By default vc_init is
enabled. When vc_init is enabled, the long-distance link uses ARB primitives. When vc_init is
disabled, the link uses IDLE primitives.
The buffer-to-buffer credit recovery feature is not supported on Extended Fabrics E_Port when it is
configured to use IDLE primitives. The user must disable the buffer-to-buffer credit recovery feature
using the portcfgcreditrecovery command and specifying the disable option; otherwise, the
link will continuously reset.
The Adaptive Networking SID/DID Traffic Prioritization QoS feature is not supported on Extended
Fabrics E_Ports when IDLE primitives are configured on these ports. In this mode, only data virtual
channels are available when QoS-related virtual channels are not available.
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.
HP StorageWorks Fabric OS 6.3.0d Release Notes 35