Dell POWEREDGE M1000E - Manual (Page 530)

530 Fabric OS Administrator’s Guide
53-1002745-02
Setting QoS zone-based traffic prioritization
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• Traffic prioritization is enforced on the egress ports only, not on the ingress ports.
• 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 that use D,I notation.
• QoS zones that use D,I notation are not supported for QoS over FCR.
• QoS zones that use 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 23, “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 QoS zone-based traffic prioritization
1. Connect to the switch and log in using an account with admin permissions.
2. Enter the zoneCreate command to create zones for high- and 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 range is 1–5 for high-priority traffic, which corresponds to VCs 10–14. For low-priority
traffic, the id range is 1–2, which corresponds to VCs 8 and 9. The id is optional; if it is not
specified, the virtual channels are allocated by means of a round-robin scheme.
3. Enter the cfgAdd command to add the QoS zone to the zone configuration, by 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, by using the following syntax:
portcfgqos --enable [slot/]port