There are three main components that make up the MQC (Modular QoS CLI) and are listed below:
- class-map – This is used as a classification filter defined within the policy map to identify traffic for preferential or deferential treatment. Traffic can be identified by IPP or DSCP, named or numbered ACL, Network-Based Application Recognition (NBAR), Layer 2 parameters (CoS, FR DE, ATM cell loss priority [CLP], MPLS Experimental [EXP] value), or combination of all of these.
- policy-map – This is used as a statement that defines how each traffic type, as identified by the class map(s), should be serviced. Options include marking/re-marking, policing, shaping, low-latency or class-based weighted fair queuing, selective dropping, and header compression.
- service-policy – This is used as a statement that binds the policy to an interface and specifies direction
ip access-list extended VOICE-RTP permit udp 192.168.1.0 0.0.0.255 any range 16384 32767 ip access-list extended VOICE-SIGNALING permit tcp 192.168.1.0 0.0.0.255 any range 2000 2002 ! class-map match-all VOICE-SIGNALING match access-group name VOICE-SIGNALING class-map match-all VOICE-RTP match access-group name VOICE-RTP ! policy-map VOICE class VOICE-RTP set dscp ef class VOICE-SIGNALING set dscp cs3 ! interface Vlan10 description Voice VLAN service-policy input VOICE ! end
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