No override
By default, the
show qos
output
for following global QoS classifiers may display No-override
for QoS marking: IP Diffserv, Layer-3 Protocol, VLAN ID, and Source-port.
The command No-override
means that the global QoS
policy used to mark matching packets does not assign an 802.1p value. IP packets received through a VLAN-tagged port are managed using the 802.1p priority they carry in the 802.1Q field in their headers.
VLAN-tagged packets received through an untagged port are handled by the switch with normal priority.
Show QoS command output
The
show qos
output shows
the global QoS configurations on the switch that are configured with
the VLAN ID classifier. Note that non-default 802.1p priorities have
been configured for VLAN IDs 22 and 33; packets received on VLAN 1
are managed with the default settings, as described in the two bulleted
items above.