JUNOSe 10.0.x Quality of Service Configuration Guide

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Entire manual as PDF
About the Documentation
E-series and JUNOSe Documentation and Release Notes
Audience
E-series and JUNOSe Text and Syntax Conventions
Related E-series and JUNOSe Documentation
Obtaining Documentation
Documentation Feedback
Requesting Technical Support
Quality of Service Overview
QoS on the E-series Router Overview
QoS Audience
QoS Platform Considerations
Interface Specifiers
QoS Terms
QoS Features
Configuring QoS on the E-series Router
QoS References
Defining Service Levels with Traffic Classes and Traffic-Class Groups
Traffic Class and Traffic-Class Groups Overview
Best-Effort Forwarding
Traffic-Class Groups Overview
Configuring Traffic Classes That Define Service Levels
Configuring Traffic-Class Groups That Define Service Levels
Monitoring Traffic Classes and Traffic-Class Groups for Defined Levels of Service
Configuring Queue Profiles for Buffer Management
Queuing and Buffer Management Overview
Static Oversubscription
Dynamic Oversubscription
Color-Based Thresholding
Memory Requirements for Queue and Buffers
Guidelines for Managing Queue Thresholds
Guidelines for Configuring a Maximum Threshold
Guidelines for Configuring a Minimum Threshold
Guidelines for Managing Buffers
Guidelines for Managing Buffer Starvation
Configuring Queue Profiles to Manage Buffers and Thresholds
Monitoring Queues and Buffers
Configuring Dropping Behavior with RED and WRED
Dropping Behavior Overview
RED and WRED Overview
Configuring RED
Example: Configuring Average Queue Length for RED
Example: Configuring Dropping Thresholds for RED
Example: Configuring Color-Blind RED
Configuring WRED
Example: Configuring Different Treatment of Colored Packets for WRED
Example: Defining Different Drop Behavior for Each Traffic Class for WRED
Example: Configuring WRED and Dynamic Queue Thresholds
Monitoring RED and WRED
Gathering Statistics for Rates and Events in the Queue
QoS Statistics Overview
Rate Statistics
Event Statistics
Configuring Statistic Profiles for QoS
Configuring Rate Statistics
Configuring Event Statistics
Clearing QoS Statistics on the Egress Queue
Clearing QoS Statistics on the Fabric Queue
Monitoring QoS Statistics for Rates and Events
QoS Scheduler Hierarchy Overview
Scheduler Hierarchy Overview
Shaping Rates, Assured Rates, and Relative Weights in a Scheduler Hierarchy
Configuring a Scheduler Hierarchy
Configuring a Scheduler Profile for a Scheduler Node or Queue
Using Expressions for Bandwidth and Burst Values in a Scheduler Profile
Configuring Rates and Weights in the Scheduler Hierarchy
Rate Shaping and Port Shaping Overview
Configuring Rate Shaping for a Scheduler Node or Queue
Configuring Port Shaping
Static and Hierarchical Assured Rate Overview
Configuring an Assured Rate for a Scheduler Node or Queue
Configuring a Static Assured Rate
Configuring a Hierarchical Assured Rate
Changing the Assured Rate to an HRR Weight
Configuring the HRR Weight for a Scheduler Node or Queue
Configuring Strict-Priority Scheduling
Strict-Priority and Relative Strict-Priority Scheduling Overview
Relative Strict-Priority Scheduling Overview
Comparison of True Strict Priority with Relative Strict Priority Scheduling
Schedulers and True Strict Priority
Schedulers and Relative Strict Priority
Relative Strict Priority on ATM Modules
Oversubscribing ATM Ports
Minimizing Latency on the SAR Scheduler
HRR Scheduler Behavior and Strict-Priority Scheduling
Zero-Weight Queues
Setting the Burst Size in a Shaping Rate
Special Shaping Rate for Nonstrict Queues
Configuring Strict-Priority Scheduling
Configuring Relative Strict-Priority Scheduling for Aggregate Shaping Rates
Shared Shaping Overview
Shared Shaping Overview
Shared Shaper Terms
How Shared Shaping Works
Active Constituents for Shared Shaping
Guidelines for Configuring Simple and Compound Shared Shaping
Shared Shaping and Individual Shaping
Shared Shaping and Best-Effort Queues and Nodes
ATM and Shared Shaping
Sharing Bandwidth with the SAR
Shared Shaping and Low-CDV Mode
Logical Interface Traffic Carried in Other Queues
Traffic Starvation and Shared Shaping
Oversubscription and Shared Shaping
Burst Size and Shared Shaping
Configuring Simple Shared Shaping of Traffic
Simple Shared Shaping Overview
Bandwidth Allocation for Simple Shared Shaping
Simple Shared Shaping on the Best-Effort Scheduler Node
Simple Shared Shaping for Triple-Play Networks
Configuring Simple Shared Shaping
Example: Simple Shared Shaping for ATM VCs
Example: Simple Shared Shaping for ATM VPs
Example: Simple Shared Shaping for Ethernet
Configuring Variables in the Simple Shared Shaping Algorithm
Simple Shared Shaping Algorithm Overview
Simple Shared Shaper Algorithm Calculations
Variables of the Simple Shared Shaper Algorithm
Guidelines for Controlling the Simple Shared Shaper Algorithm
Configuring Simple Shared Shaper Algorithm Variables
Sample Process for Controlling the Simple Shared Shaper Algorithm
Configuring Compound Shared Shaping of Traffic
Compound Shared Shaping Overview
Supported Hardware for Compound Shared Shaping
Bandwidth Allocation for Compound Shared Shaping
Configuring Compound Shared Shaping
Example: Compound Shared Shaping for ATM VCs
Example: Compound Shared Shaping for ATM VPs
Configuring Implicit and Explicit Constituent Selection for Shaping
Constituent Selection for Shared Shaping Overview
Types of Shared Shaper Constituents
Implicit Constituent Selection Overview
Implicit Bandwidth Allocation for Compound Shared Shaping
Weighted Compound Shared Shaping Example
Configuring Implicit Constituents for Simple or Compound Shared Shaping
Explicit Constituent Selection Overview
Explicit Shared Shaping Example
Explicit Weighted Compound Shared Shaping Example
Configuring Explicit Constituents for Simple or Compound Shared Shaping
Monitoring a QoS Scheduler Hierarchy
Monitoring QoS Scheduling and Shaping
QoS Profile Overview
QoS Profile Overview
Managing System Resources for Nodes and Queues
Scaling Subscribers on the TFA ASIC with QoS
Configuring and Attaching QoS Profiles to an Interface
Supported Interface Types for QoS Profiles
Configuring a QoS Profile
Attaching a QoS Profile to an Interface
Attaching a QoS Profile to a Base Interface
Attaching a QoS Profile to an ATM VP
Attaching a QoS Profile to an S-VLAN
Attaching a QoS Profile to a Port Type
Munged QoS Profile Overview
Sample Munged QoS Profile Process
Example: Port-Type QoS Profile Attachment
Example: QoS Profile Attachment to Port
Example: Diffserv Configuration with Multiple Traffic-Class Groups
Configuring Shadow Nodes for Queue Management
Shadow Node Overview
Shadow Nodes and Scheduler Behavior
Managing System Resources for Shadow Nodes
Configuring Shadow Nodes
Example: Shadow Nodes over VLAN and IP Queues
Example: Shadow Nodes on the Same Traffic-Class Group
Example: Shadow Nodes on Different Traffic-Class Groups
Monitoring a Scheduler Hierarchy on an Interface with QoS Profiles
Monitoring a Scheduler Hierarchy on an Interface with QoS Profiles
Configuring an Integrated Scheduler to Provide QoS for ATM
ATM Integrated Scheduler Overview
Backpressure and the Integrated Scheduler
VP Shaping
Integrating the HRR Scheduler and SAR Scheduler
Per-Packet Queuing on the SAR Scheduler Overview
Operational QoS Shaping Mode for ATM Interfaces Overview
ERX-7xx Models, ERX-14xx Models, and the ERX-310 Router
E120 Router and E320 Router
Guidelines for Configuring QoS over ATM
Configuring Default Integrated Mode for ATM Interface
Configuring Low-Latency Mode for Per-Port Queuing on ATM Interfaces
Configuring Low-CDV Mode for Per-Port Queuing on ATM Interfaces
Configuring the QoS Shaping Mode for ATM Interfaces
Disabling Per-Port Queuing on ATM Interfaces
Monitoring QoS Configurations for ATM
Configuring QoS for Gigabit Ethernet Interfaces and VLAN Subinterfaces
Providing QoS for Ethernet Overview
QoS Shaping Mode for Ethernet Interfaces Overview
Configuring the QoS Shaping Mode for Ethernet Interfaces
Creating a QoS Interface Hierarchy for Bulk-Configured VLAN Subinterfaces with RADIUS
Monitoring QoS Configurations for Ethernet
Configuring QoS for 802.3ad Link Aggregation Groups
QoS for 802.3ad Link Aggregation Interfaces Overview
Types of Load Balancing
Munged QoS Profiles and Load Balancing
802.3ad Link Aggregation and QoS Parameters
QoS and Ethernet Link Redundancy
Active Link Failure and QoS
Administratively Disabling a Link and QoS
Adding a New Link to the LAG and QoS
Hashed Load Balancing for 802.3ad Link Aggregation Groups Overview
Sample Scheduler Hierarchy for Hashed Load Balancing
Subscriber Load Balancing for 802.3ad Link Aggregation Groups Overview
S-VLANs and Subscriber Load Balancing
PPPoE over VLANs and Subscriber Load Balancing
PPPoE over Ethernet (No VLANs) and Subscriber Load Balancing
MPLS over LAG and Subscriber Load Balancing
Sample Scheduler Hierarchy for Subscriber Load Balancing
Subscriber Allocation in 802.3ad Link Aggregation Groups
Guidelines for Configuring QoS over 802.3ad Link Aggregation Groups
Configuring the Scheduler Hierarchy for Hashed Load Balancing in 802.3ad Link Aggregation Groups
Enabling Default Subscriber Load Balancing for 802.3ad Link Aggregation Groups
Configuring the Scheduler Hierarchy for Subscriber Load Balancing in 802.3ad Link Aggregation Groups
Configuring Load Rebalancing for 802.3ad Link Aggregation Groups
Configuring Load–Rebalancing Parameters
Configuring the System to Dynamically Rebalance the LAG
Monitoring QoS Configurations for 802.3ad Link Aggregation Groups
Configuring QoS for L2TP Sessions
Providing QoS for L2TP Overview
Sample Scheduler Hierarchies for L2TP
Configuring QoS for an L2TP Session
Configuring QoS for an L2TP LNS Session
Configuring QoS for an L2TP LAC Session
Configuring QoS for Tunnel-Server Ports for L2TP LNS Sessions
QoS and L2TP TX Speed AVP 24 Overview
Logical Interfaces and Shared-Shaping Rates
Shaping Mode
Monitoring QoS Configurations for L2TP
Configuring Interface Sets for QoS
Interface Sets for QoS Overview
Interface Set Terms
Architecture of Interface Sets for QoS
Interface Set Parents and Types
Sample Interface Columns and Scheduler Hierarchies
Scheduling and Shaping Interface Sets
Configuring Interface Sets for Scheduling and Queuing
Configuring Interface Supersets for QoS
Configuring an Interface Superset
Restricting an Interface Superset to an S-VLAN ID or an ATM VP
Configuring Interface Sets for QoS
Configuring an Interface Set
Deleting an Interface Set from an Interface Superset
Adding Member Interfaces to an Interface Set
Adding Interfaces to an Interface Set with the CLI
Adding Interfaces to an Interface Set with RADIUS
Changing and Deleting Interface Members in an Interface Set
Changing Interface Members with Upper-Layer Protocols in an Interface Set
Creating a QoS Parameter on an Interface Superset or Interface Set
Configuring a QoS Parameter Definition for an Interface Superset or an Interface Set
Creating a QoS Parameter Instance for an Interface Superset
Creating a QoS Parameter Instance for an Interface Set
Attaching a QoS Profile to an Interface Superset or an Interface Set
Configuring a QoS Profile for an Interface Superset or an Interface Set
Attaching a QoS Profile to an Interface Superset
Attaching a QoS Profile to an Interface Set
Deleting an Interface Superset or an Interface Set
Deleting an Interface Superset
Deleting an Interface Set
Example: Configuring Interface Sets for 802.3ad Link Aggregation Groups
QoS Parameter Overview
QoS Parameter Overview
QoS Parameter Audience
QoS Parameter Terms
Relationship Among QoS Parameters, Scheduler Profiles, and QoS Profiles
QoS Administrator Tasks
QoS Client Tasks
Configuring a QoS Parameter
Parameter Definition Attributes for QoS Administrators Overview
Naming Guidelines for QoS Parameters
Interface Types and QoS Parameters
Controlled-Interface Types
Controlled-Interface Type Example
Instance-Interface Types
Instance-Interface Type Example
Subscriber-Interface Types
Subscriber-Interface Type Example
Range of QoS Parameters
Applications and QoS Parameters
Scheduler Profiles and Parameter Expressions for QoS Administrators
Referencing a Parameter Definition in a Scheduler Profile
Removing or Modifying a Scheduler Profile
Using Expressions for QoS Parameters
Operators and Precedence
Specifying a Range in Expressions
Operations Using This Expression
Configuring a Basic Parameter Definition for QoS Administrators
Parameter Instances for QoS Clients Overview
Global QoS Parameter Instance Overview
QoS Parameters for Interfaces Overview
Creating Parameter Instances
Creating a Global Parameter Instance
Creating a Parameter Instance for an Interface
Creating a Parameter Instance for an ATM VP
Creating a Parameter Instance for an S-VLAN
Example: QoS Parameter Configuration for Controlling Subscriber Bandwidth
Procedure for QoS Administrators
Procedure for QoS Clients
Monitoring the Subscriber Configuration
Complete Configuration Example
QoS Administrator Configuration
QoS Client Configuration
Configuring Hierarchical QoS Parameters
Hierarchical QoS Parameters Overview
Guidelines for Configuring Hierarchical Parameters
Configuring a Parameter Definition to Calculate Hierarchical Instances
Example: QoS Parameter Configuration for Hierarchical Parameters
Procedure for QoS Administrators
Procedure for QoS Clients
Monitoring Hierarchical QoS Parameters
Complete Configuration Example
QoS Administrator Configuration
QoS Client Configuration
Configuring IP Multicast Bandwidth Adjustment with QoS Parameters
IP Multicast Bandwidth Adjustment for QoS Overview
Guidelines for Configuring IP Multicast Adjustment for QoS
Configuring a Parameter Definition for IP Multicast Bandwidth Adjustment
Example: QoS Parameter Configuration for IP Multicast Bandwidth Adjustment
Monitoring the Configuration
Complete Configuration Example
Configuring the Shaping Mode for Ethernet with QoS Parameters
Cell Shaping Mode Using QoS Parameters Overview
Overriding the QoS Shaping Mode
Module Types and Capabilities for QoS Cell Mode Application
Cell Tax Adjustment Using QoS Cell Mode
Relationship with QoS Downstream Rate Application
Guidelines for Configuring the Cell Shaping Mode with QoS Parameters
Configuring a Parameter Definition to Shape Ethernet Traffic Using Cell Mode
Example: QoS Parameter Configuration for QoS Cell Mode and Byte Adjustment for Cell Shaping
Complete Configuration Example
Configuring Byte Adjustment for Shapng Rates with QoS Parameters
Byte Adjustment for ADSL and VDSL Traffic Overview
Byte Adjustment for Cell Shaping of ADSL Traffic Overview
Calculation and Example of Byte Adjustment for Cell Shaping
Byte Adjustment for Frame Shaping of VDSL Traffic Overview
System Calculation for Byte Adjustment of ADSL and VDSL Traffic
Guidelines for Configuring Byte Adjustment of Cell and Frame Shaping Rates Using QoS Parameters
Configuring a Parameter Definition to Adjust Cell Shaping Rates for ADSL Traffic
Configuring a Parameter Definition to Adjust Frame Shaping Rates for VDSL Traffic
Configuring the Downstream Rate Using QoS Parameters
QoS Downstream Rate Application Overview
Downstream Rate and the Shaping Mode
QoS Adaptive Mode and Downstream Rate
Obtaining Downstream Rates from a DSL Forum VSA
Guidelines for Configuring QoS Downstream Rate
Configuring a Parameter Definition for QoS Downstream Rate
Example: QoS Parameter Configuration for QoS Downstream Rate
Complete Configuration Example
Monitoring QoS on E-series Routers
Monitoring Service Levels with Traffic Classes
Monitoring Service Levels with Traffic-Class Groups
Monitoring Queue Thresholds
Monitoring Queue Profiles
Monitoring Drop Profiles for RED and WRED
Monitoring the QoS Scheduler Hierarchy
Monitoring the Configuration of Scheduler Profiles
Monitoring Shared Shapers
Monitoring Shared Shaper Algorithm Variables
Monitoring Forwarding and Drop Events on the Egress Queue
Monitoring Forwarding and Drop Rates on the Egress Queue
Monitoring Queue Statistics for the Fabric
Monitoring the Configuration of Statistics Profiles
Monitoring the QoS Profiles Attached to an Interface
Monitoring the Configuration of QoS Port-Type Profiles
Monitoring the Configuration of QoS Profiles
Monitoring the QoS Configuration of ATM Interfaces
Monitoring the QoS Configuration of IP Interfaces
Monitoring the QoS Configuration of Fast Ethernet, Gigabit Ethernet, and 10-Gigabit Ethernet Interfaces
Monitoring the QoS Configuration of IEEE 802.3ad Link Aggregation Group Bundles
Monitoring the Configuration of QoS Interface Sets
Monitoring the Configuration of QoS Interface Supersets
Monitoring the AAA Downstream Rate for QoS
Monitoring QoS Parameter Instances
Monitoring QoS Parameter Definitions
Troubleshooting QoS
Troubleshooting Memory and Processor Use for Egress Queue Rate Statistics and Events
Index
Index