HP B-series Fabric OS 6.3.2e Release Notes (5697-1816, March 2012) - includes all 6.3.2x versions

Director or DC04 SAN Director to other switches must come up after 6.0 is running on those
switches.
• Flow-based QoS is not supported on any 8-Gb Fibre Channel blades in the 4/256 SAN
Director.
• Any products that cannot operate with Fabric OS 6.x cannot exist in a fabric with flow-based
QoS. Major problems occur if previous-generation 2-Gb products exist in the fabric.
• QoS is supported on switches in Access Gateway mode with Fabric OS 6.3x and later. The
fabric switches should be running Fabric OS 6.3 to support QoS. If the fabric switch is Fabric
OS 6.2, QoS must be disabled on either switch or AG. When running Adaptive Networking
in Access Gateway mode, note the following:
◦ QoS takes precedence over ingress rate limiting.
◦ Ingress Rate Limiting is not enforced on trunked ports.
FCR backbone fabric ID changes
• With 8-Gb director blades, the switch must be disabled to change the backbone fabric ID.
• With routing and dual backbone fabrics, the backbone fabric ID must be changed to keep
the IDs unique.
Traffic Isolation over FCR
• All switches and Fibre Channel routers, both in edge and backbone fabrics, must be running
Fabric OS 6.1.0 or later in order to support this feature.
• In order for TI over FCR to function properly, the associated TI zones in each fabric (edge and
backbone) must have failover enabled.
• TI over FCR is supported only in edge-to-edge configurations. There is no support for TI in
backbone-to-edge routing configurations.
IP over Fibre Channel (IPFC)/FCR
IPFC over FCR is now disabled by default. Switches that are upgraded to Fabric OS 6.3 will retain
their configuration settings for IPFC over FCR. The change to the default configuration applies only
to new units shipping with Fabric OS 6.3.1a or units running Fabric OS 6.3x that are reset to a
default configuration. Use fcrbcast ––enable to explicitly enable IPFC over FCR.
Broadcast frame forwarding in FCR fabric
Broadcast frame forwarding is not supported in an FCR fabric with a 2408 FCoE Converged
Network Switch. By default, broadcast frame forwarding is disabled on the FC router. If your edge
fabric includes a 2408 FCoE Converged Network Switch, do not enable broadcast frame forwarding
on the FC router, which can degrade FCR performance when there is excessive broadcast traffic.
FC Routing with Mi10K
Using FC routing in a backbone-to-edge configuration with an Mi10k in the edge fabric, can result
in slow throughput for hosts attached to the Mi10K following a bounced IFL connection between
the backbone and edge fabric. To resolve this slowdown, disable and then re-enable the Mi10K
ports for the affected hosts. Mi10k directors operating with firmware earlier than MEOS 9.9.5
may experience repeated system faults when attached as an FCR edge switch to a 1606 Extension
SAN Switch EX_Port. To avoid this, ensure that the Mi10k is operating with MEOS 9.9.5 or later
for this configuration.
Important notes and recommendations 27