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● RFC 2474, Definition of the Differentiated Services Field (DS Field) in the IPv4 Headers
● RFC 2475, An Architecture for Differentiated Services
● RFC 2597, Assured Forwarding PHB Group
● 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).
● Setting dot1p Priorities for Incoming Traffic
● Configuring Port-Based Rate Policing
● Configuring Port-Based Rate Shaping
Setting dot1p Priorities for Incoming Traffic
Change the priority of incoming traffic on the interface using the dot1p-priority command from INTERFACE mode. The 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 59. dot1p-priority Values and Queue Numbers
dot1p Queue Number
0 0
1 0
2 0
3 1
4 2
5 3
6 3
7 3
● Change the priority of incoming traffic on the interface.
dot1p-priority
NOTE:
The dot1p-priority command marks all incoming traffic on an interface with a specified dot1p priority and maps
all incoming traffic to the corresponding queue. When you enable PFC and/or ETS on an interface, incoming traffic with a
specified dot1p priority can be distributed across different queues. Therefore, when you use PFC and ETS to manage data
center traffic, it is not recommended that you use the dot1p-priority command to set a queue assignment. For more
information, refer to Data Center Bridging (DCB).
Dell#config
Dell(conf)#interface tengigabitethernet 1/0
Dell(conf-if)#switchport
Dell(conf-if)#dot1p-priority 1
Dell(conf-if)#end
Dell#
Quality of Service (QoS)
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