Guidelines And Limitations; Configuring Marking - Cisco Nexus 7000 Series Configuration Manual

Configuring Marking

• You are logged on to the switch.
• You are in the correct VDC. A VDC is a logical representation of a set of system resources. You can use

Guidelines and Limitations

Marking has the following configuration guidelines and limitations:
• The set cos command can only be used in ingress policies when no other set commands are used for the
• The set qos-group command can only be used in ingress policies.
• The set discard-class command can only be used in ingress policies.
• When PIM is enabled on the switch virtual interface (SVI), you cannot mark the Layer 2 switched
• Egress QoS policies on Layer 2 ports are not supported on VDCs of any module type.
• A VLAN configuration with an egress QoS policy is not supported on VDCs that consist of F1 modules
• Egress policies on VLAN configurations do not support set match on CoS.
• Egress policies on VLAN configurations do not support set QoS group or discard class.
• Proxy-routed marking from F1 and/or F2e modules to M modules is not supported on the Layer 2 ingress
• To achieve scalability with remarking QoS policy on large number of interfaces, disable the QoS statistics
Configuring Marking
You can combine one or more of the marking features in a policy map to control the setting of QoS values.
You can then apply policies to either incoming or outgoing packets on an interface.
the switchto vdc command with a VDC number.
same packet for egress.
multicast traffic on that VLAN.
or any module plus an F1 module. However, a VLAN configuration with an egress QoS policy is supported
on VDCs of the following module types:
• M1 and/or M2 plus an F2e
• M1
• M2 and F3
• M3 and F3
• F2 and/or F2e
• F3
port. However, marking that is applied under the VLAN is supported on the Layer 2 ingress port.
on policy level. Enter the no qos statistics command, which disables global statistics, or enter the
service-policy type qos output DSCP no-stats command per policy. The scalability configuration will
not exist if policers are used.
Cisco Nexus 7000 Series NX-OS Quality of Service Configuration Guide
Guidelines and Limitations
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