Policy Parameters; Table 13: Default Slope Policy Definition - Alcatel-Lucent 7950 Quality Of Service Manual

QoS Policies

Policy Parameters

The elements required to define a slope policy are:
•
•
•
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 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 which
do not have another slope policy explicitly assigned.
Table 13

Table 13: Default Slope Policy Definition

Parameter
Policy ID
High (RED) slope
Low (RED) slope
TAF
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A unique policy ID
The high and low 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.
lists the default values for the default slope policy.
Slope policy ID
Administrative state
start-avg
max-avg
max-prob
Administrative state
start-avg
max-avg
max-prob
Time average factor
Description
7950 XRS Quality of Service Guide
Setting
1 (Policy ID 1 reserved for default slope
policy)
Shutdown
70% utilization
90% utilization
80% probability
Shutdown
50% utilization
75% utilization
80% probability
7