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Configuring Queuing and Flow Control
This chapter contains the following sections:
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Information About Queues
Ingress Queuing Policies
You can associate an ingress policy map with an Ethernet interface to guarantee bandwidth for the specified
traffic class or to specify a priority queue.
The ingress policy is applied in the adapter to all outgoing traffic that matches the specified CoS value.
When you configure an ingress policy for an interface, the switch sends the configuration data to the adapter.
If the adapter does not support the DCBX protocol or the ingress policy type-length-value (TLV), the ingress
policy configuration is ignored.
Egress Queuing Policies
You can associate an egress policy map with an Ethernet interface to guarantee the bandwidth for the specified
traffic class or to configure the egress queues.
The bandwidth allocation limit applies to all traffic on the interface including any FCoE traffic.
Each Ethernet interface supports up to eight queues, one for each system class. The queues have the following
default configuration:
• In addition to these queues, control traffic that is destined for the CPU uses strict priority queues. These
OL-26657-01
Information About Queues, page 57
Information About Flow Control, page 60
Configuring Queuing, page 61
Configuring Flow Control, page 65
Verifying the Queue and Flow Control Configurations, page 67
queues are not accessible for user configuration.
Cisco Nexus 5000 NX-OS Quality of Service Configuration Guide, Release 5.1(3)N2(1)
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