Руководство Пользователя для 3com 8807
59
N
ETSTREAM
C
ONFIGURATION
n
The application module described in this chapter refers to 3C17542 Network
Monitoring Module (NMM).
Monitoring Module (NMM).
Netstream Overview
Introduction to
Netstream
Netstream provides the packet statistics function. It can classify the stream
information according to the destination IP address, destination port number,
source IP address, source port number, protocol number and ToS of the packet,
and performs independent statistics for different stream information.
information according to the destination IP address, destination port number,
source IP address, source port number, protocol number and ToS of the packet,
and performs independent statistics for different stream information.
Figure 168 describes the basic collection and analysis procedure of Netstream
data.
data.
Figure 168 The basic collection and analysis procedure of Netstream data
The collection and analysis procedure of Netstream data is as follows:
1 The switch regularly sends the collected verbose stream information to the
network data collector (NDC);
2 The NDC analyses the data and the analysis result is used for accounting and
network planning.
Netstream
Implementation
When the Netstream feature is enabled, the stream information is first saved to
the Netstream cache. After a certain amount of time, the stream information is
sent to the NDC in the format of version 5, version 8, or version 9 UDP packets.
the Netstream cache. After a certain amount of time, the stream information is
sent to the NDC in the format of version 5, version 8, or version 9 UDP packets.
■
The aged stream information is generally sent in the form of version 5 UDP
packets;
packets;
Network
Data
Collector