Enabling and Disabling 802.1p Examination

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.)

Note

If 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.

To disable the 802.1p examination feature, use the following command.
disable dot1p examination ports [port_list | all]

Note
802.1p 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.
To re-enable the 802.1p examination feature, use the following command:
enable dot1p examination ports [port_list | all]
To display whether the 802.1p examination feature is enabled or disabled, use the following command:
show ports {mgmt | port_list | tag tag} information {detail}