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eSight V300R009C00 Operation Guide 10

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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).
Typical Networking and Application

Typical Networking and Application

iPCA supports various network scenarios. This section describes the concepts and management and implementation mechanism of iPCA based on typical network scenarios.

Overall Network Resource Quality Measurement

Overview

Network resources include the devices and Layer 2 direct links between devices on the network. As shown in Figure 12-61, the core switches, aggregation switches, access switches, and Layer 2 direct links between them are network resources.

In routine maintenance, iPCA monitors quality of the devices and direct links between devices, to obtain the quality of the entire network and locate faults.

Figure 12-61 Overall network resource quality measurement

Figure 12-61 shows the network topology of an enterprise. The branch networks are omitted in the figure. The devices with iPCA deployed are Huawei agile devices. The devices and links in gray do not support iPCA.

Huawei agile network is the next-generation network solution tailored for enterprises. It is developed based on the SDN concept and three innovations. The solution makes networks more agile for services. An agile network consists of agile devices. Currently, Huawei agile devices include S12700, S7700, and S5720HI. For details, see eSight Specification List.

Usage Scenario

As a network maintenance engineer of an enterprise, Jack wants to know the overall performance of the enterprise's headquarters network, for example, whether packets are lost on access switches. eSight can show quality measurement results for core switches, aggregation switches, access switches, and Layer 2 direct links between them by using alarms and topology view.

If eSight reports alarms, Jack needs to find out the cause. If no alarm is reported, network performance is good. eSight displays quality of each device and direct link, so Jack can determine whether overall network performance degrades.

Network Service Quality Measurement

iPCA can measure quality of a specified service (such as video and voice) running on the network. It reflects the performance of the network where the service flow passes through. Depending on whether the measurement objectives include the devices on the two ends of the service flow, network service quality measurement includes end-to-end service quality measurement and regional network service quality measurement.

End-to-End Network Service Quality Measurement

Figure 12-62 shows the network topology of an enterprise. Voice service runs between devices A and B, and often has delay. Jack creates a quality measurement task between devices A and B through eSight to check whether voice service has lost packets. When detecting packet loss on the network, Jack can find out the device where packets are lost to locate the fault.

Figure 12-62 End-to-end network service quality measurement

The network where voice service flow passes through is a packet conservation domain. Figure 12-63 shows the network of simplified end-to-end network service quality measurement.

Figure 12-63 Simplified measurement solution

  • Target Logical Port (TLP): TLPs are the observing points distributed on network edge. They are the interfaces on network devices. TLPs execute measurement activities (packet loss statistics collection) and generate statistics data (such as number of sent and received packets, volume of sent and received traffic, and time stamps). For a target flow passing through a packet conservation domain, the upstream TLP is called In-Point-TLP and the downstream TLP is Out-Point TLP.
  • Data Collecting point (DCP): DCPs are the statistics aggregation points of iPCA. They are network devices. A DCP manages and controls TLPs, aggregates the statistics data collected by TLPs, and sends the data to MCP.
  • Measurement Control Point (MCP): The MCP is the control point in the iPCA system. It is also a network device. The MCP receives statistics data sent from DCPs, summarizes and calculates statistics, and reports calculation results to eSight. eSight graphically displays the measurement results.
NOTE:
  • The MCP and DCPs must be Huawei agile devices.

    Huawei agile network is the next-generation network solution tailored for enterprises. It is developed based on the SDN concept and three innovations. The solution makes networks more agile for services. An agile network consists of agile devices. Currently, Huawei agile devices include S12700, S7700, and S5720HI. For details, see eSight Specification List.

  • As shown in the preceding figure, a high-specification network device can function as both an MCP and a DCP.

Regional Network Service Quality Measurement

Figure 12-64 shows the network topology of an enterprise. The devices at the aggregation and access layers are omitted in the figure.

The enterprise has a regular meeting every month by using the VoIP service, in which each branch reports project progress. Recently, the voice is intermittent in the meeting. After initial diagnosis, Jack determines that the problem occurs on the WAN.

eSight provides the regional network service quality measurement solution. As shown in Figure 12-64, the WAN is a packet conservation domain. Jack checks whether voice service has lost packets in the packet conservation domain. If packet loss occurs on the WAN, Jack needs to notify the maintenance personnel of the WAN.

NOTE:
  • The devices on WAN are not maintained by Jack. When creating the packet conservation domain, Jack adds the edge devices (devices A, B, C, and D) of branches and headquarters to the domain.
  • Devices A, B, C, and D must be Huawei agile devices.
Figure 12-64 Regional network service quality measurement

The WAN where the voice service flows between branch A, branch B, and headquarters pass through is considered as a packet conservation domain. Figure 12-65 shows the simplified measurement solution.

Figure 12-65 Simplified measurement solution
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Updated: 2019-09-07

Document ID: EDOC1100011877

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