Concept Guide
Table 20. Queue Assignments
Internal-priority Queue
0 0
1 0
2 0
3 1
4 2
5 3
6 3
7 3
3 Dot1p->Queue Mapping Conguration is retained at the default value.
Default dot1p-queue mapping is,
DellEMC#show qos dot1p-queue-mapping
Dot1p Priority : 0 1 2 3 4 5 6 7
Queue : 0 0 0 1 2 3 3 3
Default dot1p-queue mapping is,
DellEMC#show qos dot1p-queue-mapping
Dot1p Priority : 0 1 2 3 4 5 6 7
Queue : 2 0 1 3 4 5 6 7
4 Interface Congurations on server connected ports.
a Enable DCB globally.
DellEMC(conf)#dcb enable
b Apply PFC Priority conguration. Congure priorities on which PFC is enabled.
DellEMC(conf-if-te-1/1)#pfc priority 1,2
Using PFC to Manage Converged Ethernet Trac
To use PFC for managing converged Ethernet trac, use the following command:
dcb-map stack-unit all dcb-map-name
Congure Enhanced Transmission Selection
ETS provides a way to optimize bandwidth allocation to outbound 802.1p classes of converged Ethernet trac.
Dierent trac types have dierent service needs. Using ETS, you can create groups within an 802.1p priority class to congure dierent
treatment for trac with dierent bandwidth, latency, and best-eort needs.
For example, storage trac is sensitive to frame loss; interprocess communication (IPC) trac is latency-sensitive. ETS allows dierent
trac types to coexist without interruption in the same converged link by:
• Allocating a guaranteed share of bandwidth to each priority group.
• Allowing each group to exceed its minimum guaranteed bandwidth if another group is not fully using its allotted bandwidth.
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Data Center Bridging (DCB)