Applicable Environment
If the service traffic sent by users is not limited, a network is congested because a large number
of users send bursts of data in the same period. To make full use of limited network resources
and provide better services for more users, limit user service traffic.
If traffic on the management interface is heavy because of malicious attacks or network
exceptions, CPU usage will become high and services are interrupted. To ensure that the system
works properly, limit the traffic on the management interface.
Interface-based traffic policing takes effect for all the incoming service traffic.
Pre-configuration Tasks
Before configuring interface-based traffic policing, complete the following tasks:
l Setting physical parameters of interfaces
l Setting link layer attributes of interfaces to ensure that these interfaces work properly
l Assigning IP addresses to the interfaces and configuring routing protocols to ensure that
routes are reachable
Data Preparation
To configure interface-based traffic policing, you need the following data.
No.
Data
1 CIR, PIR, CBS, and PBS values on a common interface
2 Rate limit on a management interface
2.2.2 Limiting the Rate of Traffic on the Outbound Interface
To limit the rate of the traffic entering an interface of the S7700, apply a CAR profile to the
interface.
Context
NOTE
The following operations are performed on a common interface other than the management interface.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
qos car car-name cir cir-value [ cbs cbs-value [ pbs pbs-value ] | pir pir-value
[ cbs cbs-value pbs pbs-value ] ]
A CAR profile is created.
Quidway S7700 Smart Routing Switch
Configuration Guide - QoS 2 Traffic Policing and Traffic Shaping Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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