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NE20E-S2 V800R010C10SPC500 Feature Description - System Monitor 01

This is NE20E-S2 V800R010C10SPC500 Feature Description - System Monitor
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Overview of NetStream

Overview of NetStream

Definition

NetStream is a Huawei-proprietary technology used to collect statistics about network traffic and export the statistics. The statistics can be used for various purposes:
  • Network management and planning

  • Enterprise accounting and departmental charging

  • ISP billing report

  • Data storage

  • Data mining for marketing purposes

Object

The rapid development of the Internet provides customers with higher bandwidth and predictable QoS. Meanwhile, with the increase of services and applications, carriers need to provide more fine-grained metering for network management and accounting. As shown in Table 3-1, traditional methods to collect stream statistics have drawbacks. Developing a technology to answer the preceding demands becomes urgent. NetStream is therefore developed.

Table 3-1 Implementation and drawbacks of the traditional traffic statistics methods

Method

Implementation

Drawback

Based on IP addresses

A counter index is saved in the routing table to count bytes and packets passing through the device.

This method can only calculate packets of limited types.

Based on ACLs

ACLs are used to accurately match packets and then collect statistics about matching packets.

A great number of ACLs need to be configured, and mismatching packets cannot be counted.

Based on SNMP

The SNMP protocol is used to implement the statistics function on a device to collect interface statistics, IP statistics, and ACL matching statistics.

The statistics function is not strong enough. It needs to collect the statistics through continuous polling, which puts heavy load on the CPU and network.

Based on interface mirroring

With interface mirroring, traffic passing through an interface is duplicated and then sent to a special server to implement the statistics function.

The cost is high. A special server is needed to collect statistics, and an additional interface is used. The statistics cannot be performed on the interface that does not support the mirroring function.

Based on the traffic duplication at the physical layer

Traffic is duplicated using the splitter or other devices at the physical layer and then sent to a special server to implement the statistics function.

The cost is high. The special server and device must be purchased.

Benefits

NetStream enables carriers to implement more fine-grained metering for network management and accounting.

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Updated: 2019-01-02

Document ID: EDOC1100055478

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