Tuesday, June 4, 2019

cisco IOS XE autoqos trust dscp -- what is it doing? :)

When I apply auto qos trust dscp to our wan interface, the switch applies an input policy:

policy-map AutoQos-4.0-Trust-Dscp-Input-Policy class class-default set dscp dscp table AutoQos-4.0-Trust-Dscp-Table 

We noticed this policy seems to be remarking some qos packets marked with EF down to CS5. Does anyone know what is happening here?



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