I must build a QoS policy on network having different sort of trafic such as real time trafic, best effort trafic...
My test plan is formed by LAN1 which is linked by SWITCH1 to ROUTER1.
ROUTEUR1 is linked to ROUTEUR2 and ROUTER2 is linked to LAN2 by SWITCH2.
It should have congestion point on link bounding ROUTER1 and ROUTER2 (wan).
My question is : Should I shape or police trafic on switchs to avoid to create congestion point on wan link?
What is the difference between use of policing, shaping and use of congestion avoidance mechanism such as WRED or RED?
Which mechanisms are used in pratice and on which sort of traffic?