Slope policy parameters for 7210 SAS-D

The elements required to define a slope policy are the following:

• a unique policy ID

• the high and low RED slope shapes for the queues

  Settings for the high-priority and low-priority RED slopes or the high-slope (for TCP in-profile packets), low-slope (for TCP out-of-profile packets), and non-TCP slope (for non-TCP packets). All three slopes are on a per-port per-queue basis

• configurable parameters on each slope are start-avg, max-avg, max-prob and time averaging-factor (TAF)

A slope policy is defined with generic parameters so that it is not inherently an access or network policy. A slope policy defines access port egress queue buffer management properties when it is associated with an access port buffer pool and access-uplink port egress queue buffer management properties when it is associated with a access-uplink port buffer pool.

Each access port egress buffer pool and access-uplink port egress buffer pool can be associated with only one slope policy ID.

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

The following table lists the default values for the default slope policy.