Qos Adaptive Mode And Downstream Rate; Obtaining Downstream Rates From A Dsl Forum Vsa; Table 32: Access Loop Types And Resultant Shaping Mode - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - QUALITY OF SERVICE CONFIGURATION GUIDE 2010-09-22 Configuration Manual

JunosE 11.3.x Quality of Service Configuration Guide

QoS Adaptive Mode and Downstream Rate

Obtaining Downstream Rates from a DSL Forum VSA

Related
Documentation
284
After you create the parameter definition, you must enable QoS adaptive mode for ANCP
by issuing the qos-adaptive-mode command. ANCP uses this setting to dynamically
create the parameter instances for the QoS downstream rate application and, if
applicable, the QoS cell mode application. It also uses the setting to determine the value
that the system uses when recalculating the shaping rate.
For example, if you created a parameter definition with the QoS cell mode application,
ANCP configures parameter instances associated with a value of 0 to indicate a
frame-oriented DSL types such as VDSL2. ANCP configures cell-oriented DSL types such
as ADSL with a value of 1.
Table 32 on page 284 lists the DSL types, interface type, and resultant shaping modes
that ANCP configures when creating a parameter instance for the QoS cell mode
application.

Table 32: Access Loop Types and Resultant Shaping Mode

Access Loop Access Loop
Type Interface Type
ADSL1 ATM
ADSL2 ATM
ADSL2+ ATM
VDSL1 ATM
VDSL2 Ethernet
SDSL/SHDSL ATM
You can configure the QoS downstream rate application to shape VLANs or ATM VCs
based on downstream rates obtained from the Actual-Data-Rate-Downstream [26-130]
DSL Forum vendor-specific attribute (VSA).
Configuring a Parameter Definition for QoS Downstream Rate on page 285
Example: QoS Parameter Configuration for QoS Downstream Rate on page 287
For more information about configuring the shaping mode for Ethernet interfaces, see
QoS Shaping Mode for Ethernet Interfaces Overview on page 170 and Cell Shaping
Mode Using QoS Parameters Overview on page 265
For more information about configuring byte adjustment for downstream rates, see
Byte Adjustment for ADSL and VDSL Traffic Overview on page 275
For information about configuring the shaping mode for ATM interfaces, see Configuring
the QoS Shaping Mode for ATM Interfaces on page 166
Shaping Mode
Cell
Cell
Cell
Cell
Frame
Cell
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