HP 8/24 Fabric OS Administrator's Guide v6.4.0 (53-1001763-01, June 2010) - Page 450
High availability considerations for traffic prioritization
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18 QoS zones 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. 410 Fabric OS Administrator's Guide 53-1001763-01
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