Configuring Congestion Management; Configuring Bandwidth And Bandwidth Remaining - Cisco Nexus 9000 Series Configuration Manual

Configuring Congestion Management

Configuring Congestion Management
You can configure only one of the following congestion management methods in a policy map:
• Allocate a minimum data rate to a queue by using the bandwidth and bandwidth remaining commands.
• Allocate all data for a class of traffic to a priority queue by using the priority command. You can use
• Allocate a minimum and maximum data rate to a queue by using the shape command.
In addition to the congestion management feature that you choose, you can configure one of the following
queue features in each class of a policy map:
• Tail drop thresholds based on the queue size and the queue limit usage. For more information, see
• WRED for preferential packet drops. For more information, see the

Configuring Bandwidth and Bandwidth Remaining

You can configure the bandwidth and bandwidth remaining on the egress queue to allocate a minimum
percentage of the interface bandwidth to a queue.
Note
When a guaranteed bandwidth is configured, the priority queue must be disabled in the same policy map.
SUMMARY STEPS
1. configure terminal
2. policy-map type queuing {[match-first] policy-map-name}
3. class type queuingclass-name
4. Assign a minimum rate of the interface bandwidth or assign the percentage of the bandwidth that remains:
5. (Optional) Repeat Steps 3 and 4 to assign tail drop thresholds for other queue classes.
6. exit
7. show policy-map [type queuing [policy-map-name | default-out-policy]]
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the bandwidth remaining command to distribute remaining traffic among the nonpriority queues. By
default, the system evenly distributes the remaining bandwidth among the nonpriority queues.
Configuring Tail Drop on Egress Queues, on page
section.
Note WRED is not supported on the Cisco Nexus 9508 switch (NX-OS 7.0(3)F3(3).
• Bandwidth percent:
bandwidth {percent percent}
• Bandwidth remaining percent:
bandwidth remaining percent percent
Configuring Queuing and Scheduling
111.
Configuring WRED on Egress Queues