Both class based weighted faire queuing and policy based routing can co-exit on the sanme router interface?
there should not be an issue, as CBWFQ is an output feature and PBR is an input feature and thus both are handling different traffic.
From another point of view: Routing comes first and queueing after the packet was routed to an output interface independantly from how it got there.
There might be hardware/software related exceptions, but the behaviour described above would generally be what you can expect.
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