Effect of No-override
If you configure a global IP-Diffserv classifier and
No-override is displayed for the 802.1p priority associated with a codepoint, DSCP marking cannot be performed on matching outbound packets. However, QoS does not affect the packet-queuing 802.1p priority or VLAN tagging carried in the packet.
In this case, the packets are handled as follows (as long as no other QoS classifier marks a new 802.1p priority on the matching packets):
802.1Q status |
Outbound 802.1p priority |
|---|---|
Received and forwarded on a tagged-port member of a VLAN |
Unchanged |
Received on an untagged-port member of a VLAN; forwarded on a tagged-port member of a VLAN |
0 (zero) normal |
Forwarded on an untagged-port member of a VLAN |
None |