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mls qos VS mls qos trust

Hello world!

I want to enable qos on a 3560 switch,
So, I put:
Overall setup mode "mls qos"

Question:
is what it is Verily nessaiire to interface configuration mode: "mls qos trust"?

Regards,

  • Other Network Infrastructure Subjects
1 REPLY
Super Bronze

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Generally, on many Catalyst switches, once you enable QoS, they will erase an ingress CoS/ToS markings unless your trust it or otherwise (i.e. policy) maintain it.

I.e. the answer to your question is an "it depends"; but unless you want the markings reset to zero, the answer is probably yes (you want to trust).

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