Slope Policy Parameters; Table 15: Default Slope Policy Definition - Alcatel-Lucent 7210 SAS E OS Quality Of Service Manual

QoS Overview

Slope Policy Parameters

The elements required to define a slope policy are:
•
•
A slope policy is defined with generic parameters so that it is not inherently an access nor an
access uplink policy. A slope policy defines access egress buffer management properties when it is
associated with an access port buffer pool and access uplink egress buffer management properties
when it is associated with an access uplink port buffer pool.
Each access egress buffer pool and access uplink egress pool can be associated with one only slope
policy ID.
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 & access uplink
buffer pools which do not have another slope policy explicitly assigned.
Table 15

Table 15: Default Slope Policy Definition

Parameter
Policy ID
High (RED) slope
Low (RED) slope
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A unique policy ID
The high and low RED slope shapes for the buffer pool: start-threshold, drop-rate per
egress queue settings for the high-priority and low-priority RED slopes.
lists the default values for the default slope policy.
Slope policy ID
Administrative state
start-threshold
queue 1 — 8 drop rate
Administrative state
start-threshold
queue 1 — 8 drop rate
Description
7210 SAS-E OS Quality of Service Guide
Setting
1 (Policy ID 1 reserved for default slope
policy)
Shutdown
75% utilization
1 (6.25% drop rate)
Shutdown
50% utilization
0 (100% drop rate)