HP StorageWorks 4/32 Brocade Fabric OS Administrator's Guide v6.3.0 (53-100133 - Page 463
Setting traffic prioritization, Fabric OS Encryption Administrator's Guide
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QoS: SID/DID traffic prioritization 18 • Traffic prioritization is not supported on 10 Gbps ISLs. • Traffic prioritization is not supported on mirrored ports. • Traffic prioritization is not supported over LSAN zones. The traffic is always medium priority in the ingress edge fabric, the backbone fabric, and the egress edge fabric. • Traffic prioritization is not supported on a CryptoTarget container (redirection zone). See the Fabric OS Encryption Administrator's Guide for information about redirection zones. • Traffic prioritization is not supported in McDATA Fabric Mode (interopmode 2) or Open Fabric Mode (interopmode 3). • You must be running Fabric OS v6.3.0 or later to create QoS zones using D,I notation. • QoS zones using D,I notation are not supported for QoS over FCR. • QoS zones using D,I notation should not be used for loop or NPIV ports. • If QoS is enabled, an additional 16 buffer credits are allocated per port for 8-Gbps ports in LE mode. See Chapter 20, "Managing Long Distance Fabrics," for information about buffer credit allocation in extended fabrics. • Trunking considerations: If some ports in a trunk group have QoS enabled and some ports have QoS disabled, then two different trunks are formed, one with QoS enabled and one with QoS disabled. Setting traffic prioritization 1. Connect to the switch and log in as admin. 2. Enter the zoneCreate command. The format varies depending on whether you want high or low priority traffic. • For high priority traffic, use the following syntax: zonecreate "QOSHid_zonename", "member[; member...]" • For low priority traffic, use the following syntax: zonecreate "QOSLid_zonename", "member[; member...]" The id is from 1-5 for high priority traffic, which corresponds to VCs 10-14. For low priority traffic, the id is from 1-2, which corresponds to VCs 8 and 9. The id is optional; if it is not specified, the virtual channels are allocated using a round-robin scheme. 3. Enter the cfgAdd command to add the QoS zone to the zone configuration, using the following syntax: cfgadd "cfgname", "QOSzonename" 4. Enter the cfgSave command to save the change to the defined configuration. 5. Enter the cfgEnable command for the appropriate zone configuration to make the change effective. cfgenable "cfgname" 6. Enter the portCfgQos command to enable QoS on the E_Ports, using the following syntax: portcfgqos --enable [slot/]port Fabric OS Administrator's Guide 421 53-1001336-01
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