MLS qos cos override / switchport priority

From: buesink@fma.nl
Date: Sat Aug 13 2005 - 09:45:26 GMT-3

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Hi guys,

Question1:

example 1
==========
mls qos
int f0/1
mls qos cos override
mls qos trust cos

example 2
==========
mls qos
int f0/1
switchport priority extend cos 1

what is the difference, could somebody explain me briefly When you use the switchport command and when you use the mls qos cos command? Whats the difference?

Question2:
When I enable "mls qos" on a switch it says:

Switch(config)#mls qos
QoS: ensure flow-control on all interfaces are OFF for proper operation.

Does this mean I have to dlso on example 1 or example2 the command "no flow-control receive"

Regards and thanks in advance

J.

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