Virtual Connect uses the 802.1 Q priority for all other traffic. VC administrators can map DSCP/ToS values to 802.1p egress priorities to be set on packets before they are placed on an egress queue. Virtual Connect retains and obeys L2 markings on tunneled vNets without applying any changes to them.

To change the traffic class for an Ingress DOT1P Value or Ingress DSCP Value, select a traffic class from the drop-down list, and then click Apply.

To reset the QoS configuration to default values, click Reset, and then click Apply. However, clicking Reset and then clicking Apply resets the values on both the Ingress Traffic Classification tab and Traffic Class tabs to the default values for active and inactive configurations.

Custom (without FCoE Lossless)

When using the Custom (without FCoE Lossless) option, you must configure traffic class parameters and traffic classification.

Custom (without FCoE Lossless) enables QoS and allows customized configuration that does not include the FCoE class. It includes one system class (Best Effort) and up to seven custom classes for non-FCoE Ethernet traffic.

You cannot switch to Custom (without FCoE Lossless) if the domain has a fabric associated with an FCoE-capable interconnect module, a shared uplink set has an associated FCoE network, or a server profile has an FCoE connection.

When using this configuration, you cannot create a profile with FCoE connections, you cannot add FCoE networks to a shared uplink set, and you cannot create fabrics with FCoE-capable ports.

Traffic Classes

A traffic class allows you to categorize packets requiring similar traffic management. The following table describes the columns on the traffic class screen:

ItemDescription

Name

Name of the traffic class.

 

 

Real Time

One user-defined class can be designated as real time. Traffic from this class has the

 

highest priority and is scheduled in strict priority order. The Share and Max Share for

 

the Real Time class must be equal, and should be less than or equal to 50.

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