When you enable queueing-only mode, the switch does the following:
â¢Disables marking and policing globally
â¢Configures all ports to trust Layer 2 CoS
Note The switch applies the port CoS value to untagged ingress traffic and to traffic that is received through ports that cannot be configured to trust CoS.
Now my question is, if i have incomming traffic pure IP with dscp bit and MPLS traffic with toplable with EXP on switch. Will mls qos queueing-only mode will assing Cos internally for above untagged traffic ? if so, how does mapping happen from dscp to cos and exp to cos internally so that on egress i assging those internal cos to queue and threshold for WRR.
In our scenario, Incomming traffic is without any VLAN tagging on L2 port of switch and we have those input ports on switch configure with access vlans. egress port from switch to uplink is 802.1Q.
So problem is i can't do Qos with trust cos , i have traffic either IPv4 +MPLS both. so how does mls qos queining-only mode will help me to assing dscp to cos and exp to cos for incomming traffic and do egress qos based on that Cos value ??
I will be using 6500 - Sup720-10G with 12.2(33)SXI.
I see the command "mls qos mpls trust" but i can't have both dscp and mpls trust command on same interface so i understood that using mls qos queing only, i can map incomming dscp/exp to cos even ingress port trffic not tagged...
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