Fibre Channel Routing; Traffic Isolation Over Fcr; Integrated Routing - HP A7533A - Brocade 4Gb SAN Switch Base Release Note

the QoS model. If the switch is rebooted, 28 of 32 ports will come up in QoS mode; the last four
ports will come up in buffer-limited mode. Workarounds include disabling long distance configur-
ation 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 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.

Fibre Channel Routing

All FCR switches must be running Fabric OS 6.2.x 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 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 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.
24