Zte ZXR10 ZSR V2 Configuration Manual (System Management page 117

Chapter 12
NetFlow Configuration
Table of Contents
NetFlow Overview ....................................................................................................12-1
Configuring NetFlow.................................................................................................12-3
NetFlow Configuration Examples..............................................................................12-9
12.1 NetFlow Overview
NetFlow Introduction
NetFlow is a protocol used to monitor network traffic. There are exporter and collector
used in NetFlow application environment. The exporter collects IP data packets and send
them to collector. The collector is responsible for analyzing.
Netflow can trace and measure each flow accurately. It brings the following applications,
l Network layout
Netflow can count the information of network flow for a long time. Therefore, it can
trace and estimate the trend of network flow increasing or decreasing. Thus, add
or remove route devices or upgrade or degrade the bandwidth of route devices if
required. In this way, the network operation is more reasonable.
l
Analyze new application
Netflow collects the network usage information of a new application protocol. By
means of information analyzing, network resource can be allocated to the new
application reasonably.
l
Network monitor
Netflow has real time network monitor ability.
information when network has fault, or it can find potential network problem.
NetFlow Features
To accomplish network data collection, NetFlow performs the following task,
l
Configure NetFlow service on many interfaces on a router to collect packets which
pass through these interfaces. To reduce system load, set a sample rate on both of
ingress and egress on the interfaces. For example, if the sample rate is 2000:1, then
sample one packet from every 2000 packets. NetFlow can sample unicast, multicast
or Multi Protocol Label Switching (MPLS) packets respectively or hybridly.
l
NetFlow analyzes the sampled packet to obtain the following information,
SJ-20140504150128-007|2014-05-10 (R1.0)
It can locate fault by providing
12-1
ZTE Proprietary and Confidential