HP StorageWorks 8/24 - SAN Switch Release Note - Page 18
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Topic
Extended fabrics and
R_RDY flow control
Additional Fabric OS 6.1.x enhancements
This section describes additional Fabric OS 6.1.x enhancements:
Provides new Fabric OS commands to rename an alias, zone, and zone configuration:
zone
zoneobjectrename—Renames the zone object
Detects and handles a corrupted zone configuration (under /etc/fabos/zone*) without reboot-
ing. The switch also logs the error in RASLog.
Adds a command that provides both the WWN and serial number of the switch. The sn option
displays the serial number. For example, wwn
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Description
Starting with Fabric OS 5.1, the Extended Fabrics feature is supported in
conjunction 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 HP frame-based trunking for devices such as Time
Division Multiplexor (TDM). To support frame-based trunking with extended fabrics,
Fabric OS 6.1.1d has been enhanced to support interoperability with these
distance-extension devices.
Fabric OS 6.1.2x allows extended fabric E_Ports to operate in VC_RDY mode
using ARB or IDLE primitives as fill words. This allows frame-based trunking on
extended fabric E_Ports even with IDLE primitives are configured for these ports
when operating in native VC_RDY mode. Before this change, frame-based trunking
was supported only when ARB primitives were used in VC_RDY mode. With Fabric
OS 6.1.2x, frame-based trunking is supported on extended fabric E_Ports,
regardless of whether 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 if the long distance link should use IDLE
or ARB primitives. By default vc_init is enabled. If vc_init is enabled, the
long distance link will use ARB primitives. If vc_init is disabled, the link will use
IDLE primitives.
NOTE:
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
buffer to buffer credit recovery feature using the command
portcfgcreditrecovery 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. This is because in this mode only data Virtual Channels are
available while 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>
cfgcreditrecovery
CfgLongDistance <port> <LD|LD> 0 <distance>
The fabric parameter fabric.ops.mode.longdistance is now
deprecated and should not be used.
copy—Copies the zone object to a new zone object
disable <port>
sn returns both the WWN and the serial number