I want to apply QoS:: Traffic shaping with CBWFQ to our enterprise network, i want to ask you that where i should apply classification and QoS policy i mean to which interface. We have a Central site router 3660 and branch sites connected either to F.R E1 or TDM E1. I tried to create class maps and policy maps at the central site router and apply the desired policy to the desired branch site at the subinterface at the main router but CBWFQ is NOT supported at the subinterfaces, Should I apply policy maps at each branch site router or where
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As a general rule, you should apply traffic shaping in the direction where you expect congestion to occur. This will depend on how your application traffic flows within your network. From what I read, you have a central site router, so I assume that most of your traffic is outbound from the central router.
This means that the central router would be the place to configure your traffic shaping.
If you’re using frame relay, traffic shaping would be applied as a frame-relay map class under the dlci, not the subinterface. E.g.
class-map traffic_type_1
match ip address …
class-mapp traffic_type_2
match ip address ..
policy-map mypolicy
class traffic_type_1
bandwidth 50
class traffic_type_2
bandwidth 10
map-class frame-relay my_fr_class
frame-relay cir ..
frame-relay mincir ..
frame-relay bc ..
service-policy output mypolicy
int ser0/0
encapsulation frame-relay
frame-relay traffic-shaping
int ser0/0.1
frame-relay interface-dlci 100
class my_fr_class
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