Creating Rate-Limit Profiles; Overview - Juniper E320 Configuration Manual

Chapter 3

Creating Rate-Limit Profiles

Overview

This chapter provides information for configuring rate-limit policy management on
E-series routers.
This chapter discusses the following topics:
Overview on page 75
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Platform Considerations
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Rate Limits on page 76
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Hierarchical Rate Limits
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! One-Rate Rate-Limit Profiles
! Two-Rate Rate-Limits
! Bandwidth Management
For information on monitoring rate-limit profiles, see
Management.
Rate limiting is the process of limiting a classified packet flow or a source interface
to a rate that is less than the physical rate of the port. An E-series router's rate limits
are calculated based on the layer 2 packet size.
Rate limiting enforces data rates below the physical line rate of a port for an IP
interface, a classified packet flow, or a Layer 2 interface. You implement rate
limiting by configuring a rate-limit profile that specifies bandwidth attributes and
actions.
You can configure rate-limit profiles to provide a variety of services, including tiered
bandwidth service where traffic conforming to configured bandwidth levels is
treated differently than traffic that exceeds the configured values, and a hard-limit
service where a fixed bandwidth limit is applied to a traffic flow. You can also
configure rate-limit profiles to provide a TCP-friendly rate-limiting service that
works in conjunction with TCP's native flow-control functionality.
on page 76
on page 77
on page 88
on page 91
on page 102
Chapter 5, Monitoring Policy
Overview
! 75