Supported on all 7210 SAS platforms as described in this document
This command creates a text description stored in the configuration file for a configuration context.
The description command associates a text string with a configuration context to help identify the context in the configuration file.
The no form of this command removes any description string from the context.
Supported on all 7210 SAS platforms as described in this document
This command enables the context to configure a network queue policy.
Network queue policies define the egress network queuing for the traffic egressing on the network ports and hybrid port. Network queue policies define the bandwidth distribution for the various FC traffic egressing on the port. By default, network queue policy defines eight queues and a mapping of FC-to-queue.
default
Supported on all 7210 SAS platforms as described in this document
This command configures a QoS network-queue policy queue.
The FCs are mapped to queues, see FC-to-Queue ID Map for more information. Only one FC can be mapped to one queue. Queue ID 8 is the highest priority and queue ID 1 is the lowest priority. Network queues carry both the unicast and multicast traffic and no segregation is performed.
The hardware port scheduler prioritizes the queue according to the priority for each queue. High priority traffic should be mapped to high priority FCs. Mapping traffic to high priority FCs does not necessarily guarantee high priority treatment, because the scheduler policy can influence the relative priority among the queues.
See Schedulers for more information about scheduling behavior and the queue parameters considered by the scheduler.
Supported on all 7210 SAS platforms as described in this document
This command defines the method used by the system to derive the operational CIR and PIR rates when the queue is provisioned in hardware. For the cir and pir parameters, the system attempts to find the best operational rate depending on the defined constraint.
The no form of this command removes any explicitly defined constraints used to derive the operational CIR and PIR created by the application of the policy. When a specific adaptation-rule is removed, the default constraints for cir and pir apply.
adaptation-rule cir closest pir closest
Supported on all 7210 SAS platforms as described in this document
This command specifies the WRED and buffer parameters associated with the queue.
All of the queues in the system allocate buffers from the system pool.
Supported on all 7210 SAS platforms as described in this document
This command specifies whether the queue operates in strict or weighted mode.
The no form of this command reverts the queue mode to the default value.
weighted
Supported on all 7210 SAS platforms as described in this document
This command defines the administrative PIR and the administrative CIR parameters for the queue. The PIR defines the maximum rate at which the queue can transmit packets through the port. Defining a PIR does not necessarily guarantee that the queue can transmit at the intended rate. The actual rate sustained by the queue can be limited by over-subscription factors or available egress bandwidth. The CIR defines the rate at which the system prioritizes the queue over other queues competing for the same bandwidth.
The rate command can be executed at any time, changing the PIR and CIR rates for all queues created on the access ports.
The no form of this command reverts all queues created with the queue-id by association with the QoS policy to the default PIR (100) and CIR (0) values.
The actual CIR rate is dependent on the queue adaptation-rule parameters and the actual hardware where the queue is provisioned.
Supported on all 7210 SAS platforms as described in this document
This command configures the weight of the queue.
The configured weight determines the proportion of available bandwidth that is given to this queue in comparison to other queues contending for bandwidth at the same priority level.
The no form of this command reverts the weight to the default value.
Supported on all 7210 SAS platforms as described in this document
This command copies or overwrites existing network queue QoS policies to another network queue policy ID.
The copy command is a configuration level maintenance tool used to create new policies using existing policies. It also allows bulk modifications to an existing policy with the use of the overwrite keyword.
Supported on all 7210 SAS platforms as described in this document
This command displays network queue policy information.
The following output is an example of network queue QoS policy information, and Table 40 describes the output fields.
Label | Description |
Policy | The policy name that uniquely identifies the policy |
Description | A text string that helps identify the policy context in the configuration file |
Associations | Displays the physical port identifier where the network queue policy is applied |
Queue | Displays the queue ID |
CIR(%) | Displays the committed information rate |
CIR Adapt Rule | Displays the adaptation rule in use |
PIR(%) | Displays the peak information rate |
PIR Adapt Rule | Displays the adaptation rule in use |
Port | Indicates if the parent scheduler is a port scheduler |
CIR Level | Displays the priority of the queue in the CIR loop |
PIR Weight | Displays the weight of the queue used in the PIR loop |
High Slope | Displays the WRED high-slope parameters |
Low Slope | Displays the WRED low-slope parameters |
Burst Sizes (CBS/MBS) | Displays the configured CBS and MBS value |
Time Avg Factor | Displays the WRED Time Average Factor value in use |
FC and UcastQ | Displays the FC-to-queue association |