O&M Design
Basic Network O&M Design
In the virtualization solution for a large or midsize campus network, iMaster NCE-Campus provides comprehensive basic network management, NE management, service management, and system management functions for managed devices. These functions include user, log, resource, topology, alarm, and performance management. In addition, common protocols used in traditional network O&M can be delivered to network devices through iMaster NCE-Campus or applied on iMaster NCE-Campus, as shown in Table 2-73.
Protocol |
Configuration Supported by iMaster NCE-Campus |
|---|---|
SNMP |
|
NTP |
Configures interconnection between network devices and an NTP server. |
Syslog |
|
SSH |
|
LLDP |
Enables LLDP on network devices. This function is enabled on iMaster NCE-Campus by default. iMaster NCE-Campus can also learn the network topology information through LLDP. |
Intelligent O&M Design
Huawei's intelligent O&M solution uses Telemetry technology to enable network devices to send O&M data (such as device performance indicators and terminal logs) to Huawei's intelligent network analysis platform iMaster NCE-CampusInsight (CampusInsight for short). CampusInsight then utilizes big data, artificial intelligence (AI) algorithms, and advanced analysis technologies to digitize user experience on the network, helping detect network issues promptly and improving user experience.
Table 2-74 lists the major O&M functions provided by CampusInsight.
Category |
Function |
Description |
|---|---|---|
Network visibility |
Network health |
Client access experience: Analyze the access success rate and time consumption fulfillment rate of clients from the association, authentication, and DHCP phases to measure the network access performance. Client roaming experience: Measure the roaming quality of wireless clients based on the roaming success rate and time consumption fulfillment rate, and identify wireless roaming issues. Client throughput experience: Analyze the coverage, capacity health, and fulfillment rate of throughput to check whether the signal coverage meets requirements, whether the network is overloaded, and whether the throughput decreases. Device in-service rate: Collect statistics on the device in-service rate, evaluate the overall network availability, and identify device out-of-service issues. |
Integrated topology |
The integrated topology displays quality analysis and horizontal comparison for each site based on the wireless service access success rate, intelligently analyzes issue patterns, identifies issue boundaries, and provides preliminary analysis of root causes. |
|
Campus service analysis |
Issue analysis |
CampusInsight analyzes, identifies, and collects statistics on connection, air interface performance, roaming, and device issues based on data such as performance indicators and logs, and displays information about affected APs and clients based on each issue indicator. |
Access analysis |
The Connectivity module evaluates the overall network connection quality from aspects such as the client access fault event trend. Client access fault event statistics: includes the number of association failures, number of authentication failures, number of DHCP failures, and total number of access times. Client access fault event trend: supports time range selection, displays the distribution of devices and clients that fail to be connected in the trend chart, and displays the distribution of devices and clients with issues in an area chart. |
|
Performance analysis |
The performance experience module evaluates user experience based on RSSI, negotiated rate, and packet loss rate, displays the number and trend of clients with good and poor experience at each time point within a period of time, and analyzes the client distribution trend by single indicator. Poor experience analysis based on APs and clients helps administrators identify APs and clients with the poorest experience. |
|
Protocol trace |
Client access phases including association, authentication, and DHCP are displayed in terms of different protocols. Refined analysis for individual faults that occur during client access is provided based on the protocol interaction result and duration at each phase. The analysis includes the most possible root causes and rectification suggestions for client access failures. Currently, protocol trace supports the following user authentication methods: 802.1X authentication, Portal (Portal 2.0/HTTPS) authentication, Huawei Agile Cloud Authentication (HACA), and MAC address authentication. |
|
Intelligent wireless network |
Intelligent radio calibration |
CampusInsight collects KPIs and radio parameters reported by devices and uses intelligent algorithms to calculate the load prediction information in the next calibration period. In addition, it accurately identifies the network topology and edge AP list by utilizing the big data analytics algorithm, and pushes information to devices in response to their requests. Wireless devices perform intelligent radio calibration based on the information delivered by CampusInsight and the network information collected in real time. After the radio calibration is complete, the devices periodically report the KPI information and calibration logs of the current network to CampusInsight. CampusInsight then compares and displays the wireless network parameters before and after the radio calibration. |
WLAN topology |
Network plan import: After the network plan file made by the WLAN Planner is imported, CampusInsight displays data such as sites, pre-deployed APs, obstacles, background images, and scale planned in the file. Network comparison: After pre-deployed APs are associated with real APs, the planned data and actual data are compared in terms of the power, channel, frequency bandwidth, number of clients, negotiated rate, and signal strength, and the comparison result is displayed. Wi-Fi heatmap display: The radio heatmap can be displayed based on the AP location. |
|
User application experience |
Application analysis |
Based on the monitoring and analysis of audio and video service sessions, the SIP session statistics, service traffic trend, and session details list can be displayed, helping users quickly learn about the quality status of audio and video services. |
Intelligent O&M Deployment Planning
- Interconnection between iMaster NCE-Campus and CampusInsight: iMaster NCE-Campus allows for unified O&M and management, and CampusInsight can be invoked as a proxy service. iMaster NCE-Campus can synchronize site and device information to CampusInsight.
- Collection of data such as syslogs and performance data of network devices: The network devices must be enabled to collect and report O&M data to CampusInsight.
- The time on network devices must be synchronous with that on CampusInsight. If the time difference between the network devices and CampusInsight is greater than 10 minutes, CampusInsight cannot display the data reported by the network devices. Typically, you need to configure an NTP server with the same source to ensure time synchronization between network devices and CampusInsight. During the installation of CampusInsight, you need to enter the IP address of the external NTP clock source. In addition, you need to configure the same IP address of the external NTP clock source on the network devices.
- The wireless network uses the "WAC + Fit AP" architecture, and the performance data collection function of the Fit APs must be enabled on the web system of the WAC. This function cannot be enabled on iMaster NCE-Campus.
- To log in to CampusInsight through iMaster NCE-Campus as a proxy service, you need to enable the intelligent analyzer agent feature on iMaster NCE-Campus in advance.
