Concept Guide
To create a QoS output policy that allocates dierent amounts of bandwidth to the dierent trac types/ dot1p priorities assigned to a
queue and apply the output policy to the interface, follow these steps.
1 Create a QoS output policy.
CONFIGURATION mode
Dell(conf)#qos-policy-output test12
The maximum 32 alphanumeric characters.
2 Congure the percentage of bandwidth to allocate to the dot1p priority/queue trac in the associated L2 class map.
QoS OUTPUT POLICY mode
Dell(conf-qos-policy-out)#bandwidth-percentage 100
The default is none.
3 Repeat Step 2 to congure bandwidth percentages for other priority queues on the port.
QoS OUTPUT POLICY mode
Dell(conf-qos-policy-out)#bandwidth-percentage 100
4 Exit QoS Output Policy Conguration mode.
QoS OUTPUT POLICY mode
Dell(conf-if-te-0/1)#exit
5 Enter INTERFACE Conguration mode.
CONFIGURATION mode
interface type slot/port
6 Apply the QoS output policy with the bandwidth percentage for specied priority queues to an egress interface.
INTERFACE mode
Dell(conf-if-te-0/1)#service-policy output test12
Conguring ETS in a DCB Map
A switch supports the use of a DCB map in which you congure enhanced transmission selection (ETS) setting. To congure ETS
parameters, you must apply a DCB map on an interface.
ETS Conguration Notes
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 tracs with
dierent bandwidth, latency, and best-eort needs.
NOTE
: You can congure only three priority groups in the S4048T-ON platform.
When you congure ETS in a DCB map:
• The DCB map associates a priority group with a PFC operational mode (on or o) and an ETS scheduling and bandwidth allocation. You
can apply a DCB map on multiple egress ports.
• Use the ETS conguration associated with 802.1p priority trac in a DCB map in DCBx negotiation with ETS peers.
Data Center Bridging (DCB)
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