Administrator Guide

Port-Based QoS Congurations
You can congure 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 Trac
• Conguring Port-Based Rate Policing
• Conguring Port-Based Rate Shaping
Setting dot1p Priorities for Incoming Trac
Change the priority of incoming trac on the interface using the dot1p-priority command from INTERFACE mode. The Dell
Networking OS places trac 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 congured with the same value. You cannot assign a
dot1p value to an individual interface in a port-channel.
Table 49. 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 trac on the interface.
dot1p-priority
Example of Conguring a dot1p Priority on an Interface
NOTE: The dot1p-priority command marks all incoming trac on an interface with a specied dot1p priority and
maps all incoming trac to the corresponding queue. When you enable PFC and/or ETS on an interface, incoming trac
with a specied dot1p priority can be distributed across dierent queues. Therefore, when you use PFC and ETS to
manage data center trac, 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#
Honoring dot1p Priorities on Ingress Trac
By default, the Dell Networking OS does not honor dot1p priorities on ingress trac.
You can congure this feature on physical interfaces and port-channels, but you cannot congure it on individual interfaces in a port
channel.
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Quality of Service (QoS)