HP Brocade 8/12c HP Fabric OS 6.2.2f Release Notes (5697-1756, February 2012) - Page 24

Licensing behavior, Frame Redirection, Adaptive networking/flow-based QoS prioritization

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• In order to support nondisruptive Hot Code Load on an HP StorageWorks 8/40 SAN Switch with VF enabled, the total zoning DB size for the entire chassis should not exceed 1 MB. • A switch with VF enabled cannot use Port Mirroring or participate in a fabric that uses IP filter or password database distribution or administrative domains. You must disable the VF feature before deploying it in a fabric that uses these features. Licensing behavior When operating a switch with Fabric OS 6.2.x, some licenses may be displayed as Unknown. This is due to changes in licensing requirements for some features that no longer require a license key and may still be installed on a switch. Frame Redirection The following restriction in Fabric OS 6.2.0x has been removed for Fabric OS 6.2.1 and later. In Fabric OS 6.2.0, Frame Redirection zoning is not allowed with Default Zoning (all access in IM 0 and default zone in IM 2). This was allowed in previous releases. There is no software enforcement to block the upgrade. Adaptive networking/flow-based QoS prioritization • When using QoS in a fabric with 4-G ports or switches, Fabric OS 6.0 or later must be installed on all products in order to pass QoS info. E_Ports from the HP StorageWorks DC SAN Backbone Director or HP StorageWorks 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 FC blades in the HP StorageWorks 4/256 SAN Director. • Any products that are not capable of operating with Fabric OS 6.0 cannot exist in a fabric with flow-based QoS. Major problems occur if previous-generation 2-Gb products exist in the fabric. • For the HP StorageWorks SAN Switch 4/32 and SAN Switch 4/32B, if all of the ports are E_Ports and the switch is upgraded to Fabric OS 6.2.x, the buffers on the E_Ports are changed to utilize 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 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. 24

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•
In order to support nondisruptive Hot Code Load on an HP StorageWorks 8/40 SAN Switch
with VF enabled, the total zoning DB size for the entire chassis should not exceed 1 MB.
•
A switch with VF enabled cannot use Port Mirroring or participate in a fabric that uses IP filter
or password database distribution or administrative domains. You must disable the VF feature
before deploying it in a fabric that uses these features.
Licensing behavior
When operating a switch with Fabric OS 6.2.
x
, some licenses may be displayed as
Unknown
.
This is due to changes in licensing requirements for some features that no longer require a license
key and may still be installed on a switch.
Frame Redirection
The following restriction in Fabric OS 6.2.0
x
has been removed for Fabric OS 6.2.1 and later.
In Fabric OS 6.2.0, Frame Redirection zoning is not allowed with Default Zoning (
all access
in IM 0 and default zone in IM 2). This was allowed in previous releases. There is no software
enforcement to block the upgrade.
Adaptive networking/flow-based QoS prioritization
•
When using QoS in a fabric with 4-G ports or switches, Fabric OS 6.0 or later must be
installed on all products in order to pass QoS info. E_Ports from the HP StorageWorks DC
SAN Backbone Director or HP StorageWorks 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 FC blades in the HP StorageWorks 4/256
SAN Director.
•
Any products that are not capable of operating with Fabric OS 6.0 cannot exist in a fabric
with flow-based QoS. Major problems occur if previous-generation 2-Gb products exist in the
fabric.
•
For the HP StorageWorks SAN Switch 4/32 and SAN Switch 4/32B, if all of the ports are
E_Ports and the switch is upgraded to Fabric OS 6.2.
x
, the buffers on the E_Ports are changed
to utilize 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 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.
24