Connectivity Guide

• Apply queuing policies in the output direction on physical interfaces or in System-Qos mode.
• Apply a application type policy-map in System-Qos mode.
When you apply a policy on a system, the policy is eective on all the ports in the system. However, the interface-level policy takes
precedence over the system-level policy.
Ingress trac classication
Ingress trac can either be data or control trac.
By default, OS10 does not classify data trac and assigns the default trac class ID 0 to all data trac.
OS10 implicitly classies all control trac such as 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 classies trac in a pre-
dened way without using 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.
Table 44. 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 a dot1p trust map. All the unspecied dot1p entries map 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)#
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Quality of service