HP 4400 Release Note page 22

distance configuration for these ports or explicitly disabling QoS on other ports, freeing up
buffers for the last four ports.
With the Fabric OS 6.2.1 and later firmware upgrade, the default behavior of the Adaptive
Networking QoS feature changes as follows:
◦ Default QoS behavior is disabled on 4-Gb platforms.
Default QoS behavior is disabled on the Extended Fabrics E_Ports on both 4-Gb and
◦
8-Gb platforms.
This fix addressed the following unexpected behaviors that occurred when the Adaptive
Networking QoS feature was enabled by default in earlier Fabric OS releases:
Splitting of a single trunk group into multiple trunk groups upon port toggle, since the
◦
toggled ports come online with QoS enabled, while the remaining ports in the trunk group
have QoS disabled.
Fewer buffer credits being made available to normal E_Ports after a port toggle, even
◦
when QoS is not being utilized.
◦ An unexpected change to a fill-word configuration on an Extended Fabrics E_Port after
a port toggle. If an Extended Fabrics E_Port is using IDLE primitives as fill words, and if
that port toggles, the fill-word configuration is changed to use ARB primitives.
NOTE: After upgrading to this firmware release, if users want to enable the Adaptive Networking
QoS feature on 4-Gb platforms and on the Extended Fabrics E_Ports on both 4-Gb and 8-Gb
platforms, they must do so explicitly through the available user interfaces.
FC Routing
All FCR switches must be running Fabric OS 6.2.1x or later in order to support M-EOS 239 Domain
Mode on the Mi10K.
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 FC 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 traffic isolation over FCR to function properly, the associated TI zones in each
fabric (edge and backbone) must have failover enabled.
Integrated routing
To allow Hot Code Load on an HP StorageWorks 8/40 SAN Switch when using Integrated
Routing, the edge switch connected to the 8/40 SAN Switch must be running Fabric OS 6.1
or later.
Integrated Routing EX_Ports are supported only in the base switch on a switch with VF enabled.
To test Integrated Routing functionality, first disable the VF feature (fosconfig --disable
vf).
Integrated Routing and Top Talkers cannot run concurrently in Fabric OS 6.2.x. To use
Integrated Routing, be sure to disable Top Talkers before configuring EX_Ports.
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