Reference Guide

• Queuing policies must be applied in the output direction on physical interfaces or on system-qos mode.
• Application type policy-map must be applied on system-qos mode.
When a policy is applied on system, the policy is eective on all the ports in the system. However, interface level policy gets
precedence over system level policy.
Ingress trac classication
You can classify the ingress trac based on data trac or on control trac.
By default, OS10 does not classify the data trac and assigns the default trac class ID 0 to all data trac.
OS10 implicitly classies all interested control trac like STP, OSPF, ICMP, and so on, and forwards the trac to control plane applications.
Data trac classication
You can classify the data trac based on ACL or trust.
ACL based classication consumes signicant amount of network processor resources. Trust based classication allows to classify trac in
a pre-dened way without any network processor resources.
Trust based classication
OS10 supports classication based on the 802.1p CoS eld (L2) or DSCP eld (L3).
802.1p CoS trust map:
Trust the 802.1p CoS eld to mark with a trac-class ID and color for the CoS ow.
Default 802.1p CoS trust map
CoS
Trac class ID Color
0 1 G
1 0 G
2 2 G
3 3 G
4 4 G
5 5 G
6 6 G
7 7 G
User–dened 802.1p CoS trust map
You can override the default mapping by creating dot1p trust map. All the unspecied dot1p entries are mapped to the default trac class
ID 0.
Congure user–dened 802.1p CoS trust map
1 Create a dot1p trust map.
OS10(config)# trust dot1p-map dot1p-trust-map
OS10(config-tmap-dot1p-map)#
Quality of service
549