CoS 802.1p examination is supported on all platforms and enabled by default. However, you can only disable and enable this feature. To free ACL resources, disable this feature whenever another QoS traffic grouping is configured. (See ACLs for information on available ACL resources.)
NoteIf you disable this feature when no other QoS traffic grouping is in effect, 802.1p priority enforcement of 802.1q tagged packets continues. If only DiffServ traffic groups are enabled, then 802.1p priority enforcement for 802.1q tagged packets continues for non-IP packets using the default 802.1p map shown in the following table.
Note802.1p examination cannot be disabled for 802.1p priority level 6 in a SummitStack. When 802.1p examination is disabled on a SummitStack, the precedence for the remaining examination becomes lower than that of all other traffic groupings.