SLA Management

A service level agreement (SLA) is an agreement between the service provider and customers to ensure the performance and reliability of services to be provided at certain costs.

eSight SLA is a network performance measurement and diagnosis tool. It sends diagnosis packets between multiple NEs or links to measure network performance.

• Network or service quality monitoring

  eSight SLA builds a leading KPI system in the industry, covering multi-service networks such as video, voice, data, and IP networks. It dynamically reports slight network and service health status changes, and implements network quality visualization through data display in charts, alarm notification, and periodic report. This enables enterprise users to perceive service experience of end users and monitor network quality in real time.

• Efficient fault locating

  The SLA obtains returned values of test cases using the NQA protocol deployed on network devices and provides 10 types of test cases based on specific service and network testing requirements. This can implement high-precision and high-frequency on-demand tests, helping quickly locate faults.

Service Level Agreement (SLA) Manager measures and diagnoses network performance. You can create SLA tasks to periodically monitor the network delay, jitter, and packet loss rate, and calculate the compliance of SLA services on the live network.

By default, SLA Manager offers 24 services. You can also customize services to meet your specific demands. SLA Manager offers the Dashboard to globally monitor SLA tasks and allows you to quickly learn the quality of all or specific services on the live network. On the SLA view page, you can establish a view that consists of multiple tasks, which helps you compare task data. Quick diagnosis helps you quickly diagnose the links and carried services between source and destination devices, facilitating network fault location.

Figure 3-63 SLA management overview

Dashboard

The SLA dashboard globally monitors SLA tasks and displays the recent smart policy tasks, SLA test instance counters, and minimum SLA compliance. You can add tasks to and delete tasks from the dashboard and set the criteria to filter SLA tasks to be displayed on the dashboard.

Figure 3-64 SLA Dashboard

SLA Service Management

With SLA service management, you can define SLA levels. This module provides 24 predefined templates for common services such as voice over IP (VoIP), video, and data services. You can customize the compliance threshold and network quality counter threshold based on network conditions and operation and maintenance requirements.

Figure 3-65 SLA service management

Figure 3-66 Creating an SLA service

SLA Task Management

SLA tasks periodically monitor various counters, such as the delay, jitter, and packet loss ratio on a network. You can create, delete, start, stop, and redeliver SLA tasks, copy an existing task to create a task, and import and export tasks in batches on the SLA task management page. Shortcut operation entries are available for you to view historical data, alarms, and perform the quick diagnosis operation. The SLA task execution interval can be adjusted automatically. When network quality degrades, the execution interval is shortened, so you can obtain more detailed quality degradation information.

Figure 3-67 SLA task management

SLA View Management

You can add multiple SLA tasks to an SLA view to view the historical data of these tasks.

Figure 3-68 SLA view

Quick Diagnosis

You can use this function to measure the SLA service quality without creating any task.

Figure 3-69 Quick diagnosis

Historical Data

Historical service quality data such as the overall compliance and the data of a single counter is displayed in graphs. You can click an SLA task name on the SLA task page to switch to the historical data page of this task.

Historical data of multiple SLA tasks can be displayed on the same page.

You can switch from historical SLA data to historical NTA data and historical QoS interface data.

Figure 3-70 Historical data

Figure 3-71 Viewing the historical data of multiple tasks

The SLA is a network performance measurement and diagnosis tool. It uses the Network Quality Analysis (NQA) feature provided by network devices to proactively send diagnosis packets between network devices. In this way, it can measure KPIs such as the packet loss rate, delay, and jitter on links, and therefore evaluating the quality of related services on the network.

None