Dell POWEREDGE M1000E - Manual (Page 450)

410 Fabric OS Administrator’s Guide
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QoS zones
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High availability considerations for traffic prioritization
If the standby CP is running a Fabric OS version earlier than 6.3.0 and is synchronized with the
active CP, then QoS zones using D,I notation cannot be created. If the standby CP is not
synchronized or if no standby CP exists, then the QoS zone creation succeeds.
If QoS zones using D,I notation exist in either the defined or active configuration and the standby
CP tries to synchronize with the active CP, the synchronization fails if the standby CP is running a
Fabric OS version earlier than 6.3.0. Synchronization can succeed only if the QoS D,I zones are
removed.
Supported configurations for traffic prioritization
Note the following configuration rules for traffic prioritization:
• All switches in the fabric must be running Fabric OS v6.0.0 or later.
ATTENTION
If QoS traffic crosses an ISL for a switch running a firmware version earlier than Fabric OS
v6.0.0, the frames are dropped.
• By default, all devices are assigned medium priority.
- To be assigned high or low priority, hosts and targets must be connected to one of the
following:
• Brocade 300
• Brocade 5100
• Brocade 5300
• Brocade 5410
• Brocade 5424
• Brocade 5450
• Brocade 5460
• Brocade 5470
• Brocade 5480
• Brocade 7800
• Brocade 8000
• Brocade VA-40FC
• FC8-16, FC8-32, or FC8-48 port blade in the Brocade DCX or DCX-4S platform.
- To preserve the priority level across ISLs, the switches must be running Fabric OS v6.0.0 or
later and must be one of the following platforms: Brocade 300, 4100, 4900, 5000, 5100,
5300, 5410, 5424, 5450, 5480, 7500, 7500E, 7600, 7800, 8000, VA-40FC, 48000,
Brocade DCX, or DCX-4S.
• QoS is enabled by default on 8 Gbps ports. QoS is disabled by default on all 4 Gbps ports and
long-distance 8 Gbps ports.
Upgrade considerations for traffic prioritization
This section applies only to 4 Gbps ports and long-distance 8 Gbps ports.