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Upgrade to Cisco Catalyst 8000. Get up to 38% off branch routers when you upgrade to the Cisco Catalyst 8000, bundled with a cellular or switching module. Ingress and egress queuing models varies by line card / module. Refer to the 6500-E / 6800. QoS Configuration Guide or data sheets to ensure that you.Hi, On Cisco switch-series 6800, what is the default policy for QsS on incoming packets on L3 links. Does the "switch" trusts the existing DSCP marking or we Cisco Catalyst 6800 / 6500-E QoS Design QoS is disabled by default and must be globally enabled with the mls qos command QoS Configuration Guide or.