HP 1606 HP B-series Fabric OS 6.4.1b Release Notes (5697-0886, March 2011-incl - Page 7

CEE enhancements, Encryption enhancements, Bottleneck Detection enhancements

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CEE enhancements Fabric OS 6.4.0 added support for IGMP snooping functionality on 2408 FCoE Converged Network switch and DC SAN Director Switch 10/24 blade. This implementation supports IPv4 version of IGMP v1/v2. IGMP Snooping allows multicast data to be forwarded to only interested member ports of a VLAN. Encryption enhancements The following software enhancements were made to the Encryption platforms (Encryption SAN Switch and DC Switch Encryption FC Blade) in Fabric OS 6.4.0: • Concurrent Disk and Tape Encryption support on the same Encryption Engine-This feature allows users to configure disk and tape containers on the same Encryption Engine (EE). In pre-Fabric OS 6.4.0, users needed to dedicate an Encryption Engine either for disk encryption or tape encryption. This restriction was lifted in Fabric OS 6.4.0. However, users must note that the encryption performance could be lower when both disk and tape encryption are concurrently performed on the same Encryption Engine, when compared to a scenario where an Encryption Engine would be performing either disk or tape encryption exclusively. Bottleneck Detection enhancements Fabric OS 6.4.0 enhanced bottleneck detection capability by adding support for congestion detection at E, Ex, and F ports. Bottleneck monitoring configuration was greatly simplified in Fabric OS 6.4.0 by allowing switch-level enablement of this feature for both latency and congestion bottleneck monitoring. New enhancements allow users to configure separate thresholds for detecting latency bottleneck and congestion bottleneck conditions. Bottleneck monitoring alerts can be configured on a per port basis and are delivered through SNMP traps and RAS logs. Fabric OS 6.3.1b introduced several changes and enhancements that are also included in Fabric OS 6.4. These changes are not fully documented in existing administrator guides or other materials but will be captured in future documentation and existing documentation updates and revisions. A brief summary of these enhancements follows: • General improvements to Bottleneck Detection on both 4Gb and 8Gb platforms, including improved accuracy on reporting latency and reporting of latency values in Bottleneck Detection events. • A new option to configure the switch "edge hold time," allowing the switch to timeout frames for F_Ports sooner than for E_Ports. Proper use of this capability (disabled by default) reduces the likelihood of devices with high latencies causing frame drops in the core of the fabric and impacting other unrelated flows. Details on usage and recommended settings will be available in separate documentation. • Support for Class 3 frame transmit (Tx) timeout discard counters on 4Gb platforms (previously, 4Gb platforms supported only receive (Rx) timeout counters. See the Fabric Watch Administrator's Guide for details on use and configuration). The bottleneck detection feature does not need an additional license and is available on all 4Gb and 8Gb capable platforms. New features 7

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CEE enhancements
Fabric OS 6.4.0 added support for IGMP snooping functionality on 2408 FCoE Converged
Network switch and DC SAN Director Switch 10/24 blade. This implementation supports IPv4
version of IGMP v1/v2. IGMP Snooping allows multicast data to be forwarded to only interested
member ports of a VLAN.
Encryption enhancements
The following software enhancements were made to the Encryption platforms (Encryption SAN
Switch and DC Switch Encryption FC Blade) in Fabric OS 6.4.0:
•
Concurrent Disk and Tape Encryption support on the same Encryption Engine
—This feature
allows users to configure disk and tape containers on the same Encryption Engine (EE). In
pre-Fabric OS 6.4.0, users needed to dedicate an Encryption Engine either for disk encryption
or tape encryption. This restriction was lifted in Fabric OS 6.4.0. However, users must note
that the encryption performance could be lower when both disk and tape encryption are
concurrently performed on the same Encryption Engine, when compared to a scenario where
an Encryption Engine would be performing either disk or tape encryption exclusively.
Bottleneck Detection enhancements
Fabric OS 6.4.0 enhanced bottleneck detection capability by adding support for congestion
detection at E, Ex, and F ports. Bottleneck monitoring configuration was greatly simplified in Fabric
OS 6.4.0 by allowing switch-level enablement of this feature for both latency and congestion
bottleneck monitoring. New enhancements allow users to configure separate thresholds for detecting
latency bottleneck and congestion bottleneck conditions. Bottleneck monitoring alerts can be
configured on a per port basis and are delivered through SNMP traps and RAS logs.
Fabric OS 6.3.1b introduced several changes and enhancements that are also included in Fabric
OS 6.4. These changes are not fully documented in existing administrator guides or other materials
but will be captured in future documentation and existing documentation updates and revisions.
A brief summary of these enhancements follows:
•
General improvements to Bottleneck Detection on both 4Gb and 8Gb platforms, including
improved accuracy on reporting latency and reporting of latency values in Bottleneck Detection
events.
•
A new option to configure the switch “edge hold time,” allowing the switch to timeout frames
for F_Ports sooner than for E_Ports. Proper use of this capability (disabled by default) reduces
the likelihood of devices with high latencies causing frame drops in the core of the fabric and
impacting other unrelated flows. Details on usage and recommended settings will be available
in separate documentation.
•
Support for Class 3 frame transmit (Tx) timeout discard counters on 4Gb platforms (previously,
4Gb platforms supported only receive (Rx) timeout counters. See the
Fabric Watch
Administrator’s Guide
for details on use and configuration).
The bottleneck detection feature does not need an additional license and is available on all 4Gb
and 8Gb capable platforms.
New features
7