HP StorageWorks 8/80 HP StorageWorks Fabric OS 6.1.0f release notes (5697-7837 - Page 9

Port Mirroring, Buffer credit recovery, FCIP performance enhancements, Port Fencing, Parameter added

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Port Mirroring Fabric OS 6.1.x adds support for Port Mirroring to 8-Gb ports. The Port Mirroring feature mirrors traffic in both directions between a source and destination ID pair to a single mirror port. The user may connect an FC analyzer to this mirror port to capture all the mirrored traffic and perform troubleshooting or other analysis. Buffer credit recovery Fabric OS 6.1.x implements credit recovery protocol as described in FC-FS standards. This feature is supported only on E_Ports and allows switches to automatically recover buffer credits that were accidentally "lost" over time. Buffer credit recovery prevents link performance degradation that can otherwise occur due to loss of credits over time. FCIP performance enhancements Fabric OS 6.1.x increases committed rate tunnel performance (utilization) when compressibility exceeds 2:1. Previous firmware releases capped FC data rates to two times the committed rate of the FCIP tunnel. As a result, as compression ratio increases beyond 2:1, FC throughput remains constant at two times the committed rate, and the link utilization decreases. Fabric OS 6.1.x now monitors compressibility, adjusts to more compressible data, and works to fill the FCIP tunnel to the committed rate. In addition, the portcfg fciptunnel command has been modified to include a '-bstr' option. When creating a tunnel, adding this option to the end of the command string enables the byte streaming feature on that tunnel. To enable the byte streaming option: portcfg fciptunnel ge0 create 0 90000 -f -bstr To disable the byte streaming option: portcfg fciptunnel ge0 modify 0 -bstr 1 NOTE: The Help command has also been updated to include the following line -bstr, which turns on TCP byte streaming. Port Fencing Fabric OS 6.1.x includes new Port Fencing capabilities that can automatically isolate a port that is behaving outside the bounds of a normal, expected operation. This enhances overall stability of the fabric in the event of an isolated event that could otherwise cause a major disruption if left unattended. The Port Fencing capability is included as part of the optionally licensed Fabric Watch feature. LDAP FOS 6.1 includes enhancements to LDAP allowing Active Directory server roles to be mapped to the various switch roles. Parameter added for slotshow command An optional -m parameter has been added for the slotshow command, to display Model Names for each blade installed in a DC SAN Backbone Director or 4/256 SAN Director chassis. Scripting Many automatic page breaks in CLI output for commands have been removed to better facilitate scripting. HP StorageWorks Fabric OS 6.1.0f release notes 9

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Port Mirroring
Fabric OS 6.1.x adds support for Port Mirroring to 8-Gb ports. The Port Mirroring feature mirrors traf
fi
c
in both directions between a source and destination ID pair to a single mirror port. The user may
connect an FC analyzer to this mirror port to capture all the mirrored traf
fi
c and perform troubleshooting
or other analysis.
Buffer credit recovery
Fabric OS 6.1.x implements credit recovery protocol as described in FC-FS standards. This feature
is supported only on E_Ports and allows switches to automatically recover buffer credits that were
accidentally “lost” over time. Buffer credit recovery prevents link performance degradation that can
otherwise occur due to loss of credits over time.
FCIP performance enhancements
Fabric OS 6.1.x increases committed rate tunnel performance (utilization) when compressibility exceeds
2:1. Previous
fi
rmware releases capped FC data rates to two times the committed rate of the FCIP tunnel.
As a result, as compression ratio increases beyond 2:1, FC throughput remains constant at two times the
committed rate, and the link utilization decreases. Fabric OS 6.1.x now monitors compressibility, adjusts
to more compressible data, and works to
fi
ll the FCIP tunnel to the committed rate.
In addition, the
portcfg fciptunnel
command has been modi
fi
ed to include a
‘–bstr
’ option.
When creating a tunnel, adding this option to the end of the command string enables the byte streaming
feature on that tunnel.
To enable the byte streaming option:
portcfg fciptunnel ge0 create 0 90000 –f –bstr
To disable the byte streaming option:
portcfg fciptunnel ge0 modify 0 –bstr 1
NOTE:
The
Help
command has also been updated to include the following line
-bstr
, which turns on TCP
byte streaming.
Port Fencing
Fabric OS 6.1.x includes new Port Fencing capabilities that can automatically isolate a port that is
behaving outside the bounds of a normal, expected operation. This enhances overall stability of the fabric
in the event of an isolated event that could otherwise cause a major disruption if left unattended. The Port
Fencing capability is included as part of the optionally licensed Fabric Watch feature.
LDAP
FOS 6.1 includes enhancements to LDAP allowing Active Directory server roles to be mapped to the
various switch roles.
Parameter added for slotshow command
An optional
–m
parameter has been added for the
slotshow
command, to display Model Names for
each blade installed in a DC SAN Backbone Director or 4/256 SAN Director chassis.
Scripting
Many automatic page breaks in CLI output for commands have been removed to better facilitate scripting.
HP StorageWorks Fabric OS 6.1.0f release notes
9