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.
No description is associated with the configuration context.
This command copies existing QoS policy entries for a QoS policy-id to another QoS 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.
slope-policy “default”
This command sets a weighting factor to calculate the new shared buffer average utilization after assigning buffers for a packet entering a queue. To derive the new shared buffer average utilization, the buffer pool takes a portion of the previous shared buffer average and adds it to the inverse portion of the instantaneous shared buffer utilization.
The time-average-factor command sets the weighting factor between the old shared buffer average utilization and the current shared buffer instantaneous utilization when calculating the new shared buffer average utilization
The TAF value applies to all high- and low-priority RED slopes for ingress and egress access buffer pools controlled by the slope policy.
The no form of this command restores the default setting.
7
The exceed-slope context contains the commands and parameters for defining the exceed Random Early Detection (RED) slope graph. Each egress buffer pool supports an exceed RED slope for managing access to the shared portion of the buffer pool for exceed-profile packets.
The exceed-slope parameters can be changed at any time and the affected buffer pool exceed RED slopes are adjusted appropriately.
The no form of this command restores the exceed slope configuration commands to the default values. If the leaf commands within exceed-slope are set to the default parameters, the exceed-slope node will not appear in save config and show config output unless the detail parameter is present.
The high-slope context contains the commands and parameters for defining the high Random Early Detection (RED) slope graph. Each buffer pool supports a high RED slope for managing access to the shared portion of the buffer pool for in-profile packets.
The high-slope parameters can be changed at any time and the affected buffer pool high RED slopes will be adjusted appropriately.
The no form of this command restores the high slope configuration commands to the default values. If the commands within high-slope are set to the default parameters, the high-slope node will not appear in save config and show config output unless the detail parameter is present.
The highplus-slope context contains the commands and parameters for defining the highplus Random Early Detection (RED) slope graph. Each buffer pool supports a highplus RED slope for managing access to the shared portion of the buffer pool for inplus-profile packets.
The highplus-slope parameters can be changed at any time and the affected buffer pool highplus RED slopes will be adjusted appropriately.
The no form of this command restores the highplus slope configuration commands to the default values. If the commands within highplus-slope are set to the default parameters, the highplus-slope node will not appear in save config and show config output unless the detail parameter is present.
The low-slope context contains the commands and parameters for defining the low Random Early Detection (RED) slope graph. Each buffer pool supports a low RED slope for managing access to the shared portion of the buffer pool for low out-of-profile packets.
The low-slope parameters can be changed at any time and the affected buffer pool low RED slopes must be adjusted appropriately.
The no form of this command restores the low slope configuration commands to the default values. If the leaf commands within low-slope are set to the default parameters, the low-slope node will not appear in save config and show config output unless the detail parameter is present.
Sets the exceed, low, high, or highplus Random Early Detection (RED) slope position for the shared buffer average utilization value where the packet discard probability rises directly to one. The percent parameter is expressed as a percentage of the shared buffer size.
The no form of this command restores the max-avg value to the default setting. If the current start-avg setting is larger than the default, an error will occur and the max-avg setting will not be changed to the default.
max-avg 100 - Highplus slope default is 100% buffer utilization before discard probability is 1.
max-avg 90 — High slope default is 90% buffer utilization before discard probability is 1.
max-avg 75 — Low slope default is 75% buffer utilization before discard probability is 1.
max-avg 55 — Exceed slope default is 55% buffer utilization before discard probability is 1.
Sets the exceed, low, high, or highplus Random Early Detection (RED) slope position for the maximum non-one packet discard probability value before the packet discard probability rises directly to one. The percent parameter is expressed as a percentage of packet discard probability where always discard is a probability of 1. A max-prob value of 80 represents 80% of 1, or a packet discard probability of 0.8.
The no form of this command restores the max-prob value to the default setting.
max-prob 80
This command enables or disables the administrative status of the Random Early Detection slope.
By default, all slopes are shutdown and have to be explicitly enabled (no shutdown).
The no form of this command administratively enables the RED slope.
shutdown
This command sets the exceed, low, high, or highplus Random Early Detection (RED) slope position for the shared buffer average utilization value where the packet discard probability starts to increase above zero. The percent parameter is expressed as a percentage of the shared buffer size.
The no form of this command restores the start-avg value to the default setting. If the max-avg setting is smaller than the default, an error will occur and the start-avg setting will not be changed to the default.
start-avg 85 - Highplus slope default is 85% buffer utilization before discard probability starts to increase above zero.
start-avg 70 — High slope default is 70% buffer utilization before discard probability starts to increase above zero.
start-avg 50 — Low slope default is 50% buffer utilization before discard probability starts to increase above zero.
start-avg 30 — Exceed slope default is 30% buffer utilization before discard probability starts to increase above zero.
This command displays slope policy information.
The following output is an example of slope QoS policy information, and Table 85 describes slope QoS policy output fields.
Label | Description |
Policy | The ID that uniquely identifies the policy. |
Description | A string that identifies the policy’s context in the configuration file. |
Time Avg | The weighting between the previous shared buffer average utilization result and the new shared buffer utilization. |
Slope Parameters | |
Start Avg | Specifies the RED slope position for the shared buffer average utilization value where the packet discard probability starts to increase above zero. |
Max Avg | Specifies the percentage of the shared buffer space for the buffer pool at which point the drop probability becomes one, expressed as a decimal integer. |
Admin State | Enabled The administrative status of the RED slope is enabled. Disabled The administrative status of the RED slope is disabled. |
Max Prob. | Specifies the RED slope position for the maximum non-one packet discard probability value before the packet discard probability rises directly to one. |