Service Manual

bandwidth-percentage
Congure the bandwidth percentage allocated to priority trac in port queues.
Syntax
bandwidth-percentage percentage
To remove the congured bandwidth percentage, use the no bandwidth-percentage command.
Parameters
percentage (Optional) Enter the bandwidth percentage. The percentage range is from 1 to 100% in
units of 1%.
Defaults none
Command Modes QOS-POLICY-OUT-ETS
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(0.0) Introduced on the S3048-ON and S4048-ON.
9.7(0.0) Introduced on the S6000-ON and Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.16.0 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
By default, equal bandwidth is assigned to each port queue and each dot1p priority in a priority group. To congure
bandwidth amounts in associated dot1p queues, use the bandwidth-percentage command. When specied
bandwidth is assigned to some port queues and not to others, the remaining bandwidth (100% minus assigned
bandwidth amount) is equally distributed to unassigned non-strict priority queues in the priority group. The sum of
the allocated bandwidth to all queues in a priority group must be 100% of the bandwidth on the link.
ETS-assigned bandwidth allocation applies only to data queues, not to control queues.
The conguration of bandwidth allocation and strict-queue scheduling is not supported at the same time for a
priority group. If you congure both, the congured bandwidth allocation is ignored for priority-group trac when
you apply the output policy on an interface.
By default, equal bandwidth is assigned to each priority group in the ETS output policy applied to an egress port if
you did not congure bandwidth allocation. The sum of congured bandwidth allocation to dot1p priority trac in
all ETS priority groups must be 100%. Allocate at least 1% of the total bandwidth to each priority group and queue.
If bandwidth is assigned to some priority groups but not to others, the remaining bandwidth (100% minus assigned
bandwidth amount) is equally distributed to nonstrict-priority groups which have no congured scheduler.
Related Commands
• qos-policy-output ets — create a QoS output policy.
• scheduler — schedule priority trac in port queues.
482 Data Center Bridging (DCB)