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RFC 2474, Definition of the Differentiated Services Field (DS Field) in the IPv4 Headers
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RFC 2475, An Architecture for Differentiated Services
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RFC 2597, Assured Forwarding PHB Group
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RFC 2598, An Expedited Forwarding PHB
You cannot configure port-based and policy-based QoS on the same interface.
Port-Based QoS Configurations
You can configure the following QoS features on an interface.
NOTE: You cannot simultaneously use egress rate shaping and ingress rate policing on the same virtual local area network
(VLAN).
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Setting dot1p Priorities for Incoming Traffic
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Honoring dot1p Priorities on Ingress Traffic
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Configuring Port-Based Rate Policing
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Configuring Port-Based Rate Shaping
Setting dot1p Priorities for Incoming Traffic
Dell Networking OS places traffic marked with a priority in a queue based on the following table.
If you set a dot1p priority for a port-channel, all port-channel members are configured with the same value. You cannot assign a
dot1p value to an individual interface in a port-channel.
Table 70. dot1p-priority Values and Queue Numbers
dot1p
0
1
2
3
4
5
6
7
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Change the priority of incoming traffic on the interface.
dot1p-priority
Example of Configuring a dot1p Priority on an Interface
Dell#configure terminal
Dell(conf)#interface tengigabitethernet 1/1
Dell(conf-if-te-1/1)#switchport
Dell(conf-if-te-1/1)#dot1p-priority 1
Dell(conf-if-te-1/1)#end
Honoring dot1p Priorities on Ingress Traffic
By default, Dell Networking OS does not honor dot1p priorities on ingress traffic.
You can configure this feature on physical interfaces and port-channels, but you cannot configure it on individual interfaces in a port
channel.
You can configure service-class dynamic dot1p from CONFIGURATION mode, which applies the configuration to all interfaces. A
CONFIGURATION mode service-class dynamic dot1p entry supersedes any INTERFACE entries. For more information, refer to
Mapping dot1p Values to Service
Queues.
Queue Number
0
0
0
1
2
3
3
3
Quality of Service (QoS)
679