Reference Guide

Quality of Service (QoS) | 729
• 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 command dot1p-priority from
INTERFACE mode, as shown in Figure 39-2. FTOS places traffic marked with a priority in a queue based
on Table 39-1. 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 interfaces in a port-channel. The S5000
distributes eight dot1p priorities across four data queues.
Figure 39-2. Configuring dot1p Priority on an Interface
Honoring dot1p Priorities on Ingress Traffic
By default FTOS does not honor dot1p priorities on ingress traffic. Use the command service-class dynamic
dot1p
from INTERFACE mode to honor dot1p priorities on ingress traffic, as shown in Figure 39-3. You
can configure this feature on physical interfaces and port-channels, but you cannot configure it on
individual interfaces in a port channel.
Table 39-1. dot1p-priority values and queue numbers
dot1p
S5000 Queue
Number
01
10
20
31
42
52
63
73
FTOS#config
FTOS(conf)#interface tengigabitethernet 1/0
FTOS(conf-if)#switchport
FTOS(conf-if)#dot1p-priority 1
FTOS(conf-if)#end
FTOS#