Administrator Guide
3 Dot1p->Queue Mapping Conguration is retained at the default value.
Default dot1p-queue mapping is,
Dell#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,
Dell#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.
Dell(conf)#dcb enable
b Apply PFC Priority conguration. Congure priorities on which PFC is enabled.
Dell(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.
ETS Prerequisites and Restrictions
The following prerequisites and restrictions apply when you congure ETS bandwidth allocation or queue scheduling.
• Conguring ETS bandwidth allocation or a queue scheduler for dot1p priorities in a priority group is applicable if the DCBx version used
on a port is CIN (refer to Conguring DCBx).
• When allocating bandwidth or conguring a queue scheduler for dot1p priorities in a priority group on a DCBx CIN interface, take into
account the CIN bandwidth allocation (refer to Conguring Bandwidth Allocation for DCBx CIN) and dot1p-queue mapping.
NOTE
: The IEEE 802.1Qaz, CEE, and CIN versions of ETS are supported.
Creating an ETS Priority Group
An ETS priority group species the range of 802.1p priority trac to which a QoS output policy with ETS settings is applied on an egress
interface.
1 Congure a DCB Map.
CONFIGURATION mode
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Data Center Bridging (DCB)