Reference Guide

View service policies
OS10(conf-sys-qos)# do show qos system
Service-policy (input)(qos): p1
Service-policy (output)(queuing): p2
Ingress trac priorities
By default, OS10 does not honor 802.1 p priorities on ingress trac. Honoring 802.1p means assigning a trac-class ID implicitly based on
incoming packets. You can use the trust command only under the ingress QoS policy-type, and under the reserved class-map name
class-trust to enable honoring of 802.1p priorities on ingress trac.
1 Create a policy-map, and congure a name for the policy-map in CONFIGURATION mode.
policy-map type qos policy-map-name
2 Associate the class-map named class-trust with the policy-map in POLICY-MAP-CLASS-MAP mode.
class class-trust
3 Honor 802.1p (dot1p) priorities on ingress trac in POLICY-MAP-CLASS-MAP mode.
trust {dot1p} [fallback]
• dot1p —Sets the dynamic classication to trust dot1p.
• fallback—(Optional) Honor trusting 802.1p (dot1p) only if other match criteria in this policy-map fails to qualify for a packet.
4 Save the conguration.
do commit
Honor 802.1p priorities on ingress trac
OS10(config)# policy-map policy-trust
OS10(conf-pmap-qos)# class class-trust
OS10(conf-pmap-c-qos)# trust dot1p
OS10(conf-pmap-c-qos)# do commit
View policy-map
OS10(conf-pmap-c-qos)# do show policy-map
Service-policy(qos) input: policy-trust
Class-map (qos): class-trust
trust dot1p
Queue selection
OS10 does not honor DSCP values on ingress trac by default. Honoring DSCP means assigning a trac-class ID implicitly based on the
incoming packets. You can use the trust command under the reserved class-map name class-trust to enable honoring DSCP.
Table 5. Default DSCP to Queue Mapping
DSCP/CP hex range (XXX)xxx DSCP denition / traditional IP precedence Internal queue ID / DSCP/CP decimal —
8-queue
111XXX —/ network control 7 / 56-63
110XXX —/internetwork control 6 / 48-55
101XXX EF, expedited forwarding / CRITIC/ECP 5 / 40-47
100XXX AF4, assured forwarding / ash override 4 / 32-39
011XXX AF3 / ash 3 / 24-31
010XXX AF2 / immediate 2 / 16-23
001XXX AF1 / priority 1 / 8-15
Quality of service 449