Slope policy parameters

The elements required to define a slope policy are:

• a unique policy ID

• the highplus, high, low, and exceed RED slope shapes for the buffer pool: the start-avg, max-avg and max-prob

• the TAF weighting factor to use for the SBAU calculation for determining RED slope drop probability

Unlike access QoS policies where there are distinct policies for ingress and egress, slope policy is defined with generic parameters so that it is not inherently an ingress or an egress policy. A slope policy defines ingress properties when it is associated with an access port buffer pool on ingress and egress properties when it is associated with an access port buffer pool on egress.

Each access port buffer pool can be associated with one slope policy ID on ingress and one slope policy ID on egress. The slope policy IDs on ingress and egress can be set independently.

Slope policy ID default is reserved for the default slope policy. The default policy cannot be deleted or changed. The default slope policy is implicitly applied to all access buffer pools that do not have another slope policy explicitly assigned.

Table: Default slope policy definition lists the default values for the default slope policy.