H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 551)

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In a policy, a traffic behavior with EF configured cannot be associated with the default class,
and a traffic behavior with WFQ configured can only be associated with the default class.
In a policy, the total bandwidth assigned to the AF and EF classes cannot be greater than the
available bandwidth of the interface to which the policy applies; the total bandwidth
percentage assigned to the AF and EF classes cannot be greater than 100%.
In the same policy, the same bandwidth unit must be used to configure bandwidth for AF
classes and EF classes, either absolute bandwidth value or percent.