Network QoS policies define egress QoS marking and ingress QoS interpretation for traffic received on network ports and hybrid ports.
A network QoS policy defines both the ingress and egress handling of QoS on the network ports and hybrid ports. The following functions are defined:
ingress
option to use MPLS EXP value to map traffic to available FCs and profile state
option to use dot1p value to map traffic to available FCs and profile state
option to use IP DSCP value to map traffic to available FCs and profile state
option to use all of three above simultaneously along with DEI for FC determination and assigning profile
defines FC-to-queue mapping
egress
option to define the FC and profile state to MPLS EXP value markings
option to define the FC and profile state to dot1p value markings
option to define the FC and profile state to IP DSCP value marking
remarking of QoS bits can be enabled or disabled
The required network QoS policy definitions are the following:
a unique network QoS policy ID
egress FC to priority bits (for example, 802.1p, and so on) used for marking, for each FC
a default ingress FC and an optional in-profile/out-of-profile state
at least one default unicast FC meter or queue based on the platform. See Meter/policers and policer parameters for information about the parameters that can be configured for a meter
The optional network QoS policy element definitions are the following:
additional queues
MPLS EXP value to FC and profile state mappings for all values received
dot1p value to FC and profile state mappings for all values received
option to use DEI bit along with dot1p classification for profile state mapping
option to use IP DSCP value to FC and profile state mappings for all DSCP values received