What is Network Monitoring?

October 13, 2020

What is Network Monitoring?

Introduction

As companies and organizations grow, not only does the size but also the complexity of their networks increase. Regardless of the size of a company, the network becomes the repository for data and information. The ability to understand the network and its complexity, as well as continuous information about its availability: these are key factors in maintaining the integrity of the network and the company. Network monitoring plays a crucial role here

What is network monitoring?

The term “network monitoring” is well known in the IT industry today. Network monitoring is a critical IT process in which all network components like Routers, switches, firewalls, servers and virtual machines (VM) will be monitored for errors and Performance and continuously assessed for their availability maintenance and optimization. When it comes to excellent network monitoring, a proactive approach is important. Identifying performance issues and bottlenecks helps proactively address issues. identify problems before they lead to disruptions or complete network failures. Important aspects of network monitoring:

  • Monitoring basic elements
  • Optimization of the monitoring intervals
  • Selection of suitable protocols
  • Setting thresholds

    Monitoring basic elements

    Faulty network devices affect network performance if they aren’t recognized early. This shows the importance of continuous monitoring of the Network and associated devices. In addition to device availability, there is However, a number of other factors that affect the proper functioning of a Network. The first step in effective network monitoring is determining which devices and related performance metrics need to be monitored. While Devices like desktops and printers are not critical and therefore don't need to be as tightly monitored, servers, routers and switches are responsible for business-critical tasks and should therefore be monitored continuously. What is Network Monitoring and the intervals

    Monitoring intervals

    A monitoring interval determines the frequency with which network devices as well as associated key figures are queried to determine the performance and availability status. The Selection of suitable monitoring intervals helps you to keep the network monitoring To relieve the system and thus also your resources. Which monitoring interval is most suitable depends on the type of network device or parameters. The following valuers have proven themselves: The device availability should be in Minute-by-minute, CPU and memory statistics every five minutes and hard disk usage checked every 15 minutes. Much shorter monitoring intervals for all devices would load your network unnecessarily and are not necessary to critical aspects the network performance.

    Protocols Used

    When monitoring a network and its devices, a protocol that is secure and requires little bandwidth to maximize network performance little to affect. Most network devices and Linux servers support the Protocols SNMP and CLI, while Windows devices support the WMI protocol. SNMP is a widely used network management and monitoring protocol. The Most network elements are bundled with an SNMP agent that only activates as well Must be configured to work with the network management system (NMS) too communicate. If you allow SNMP read / write access to a device, have You have full control over this device. With SNMP, you can also do the entire Exchange configuration of a device. A network monitoring system is supported IT administrators in the process of getting their network under control by using SNMP read / write Set up write permissions and restrict the authorization for other users. Network downtime can cost a lot of money. In most cases, users report Network problems to the network management team. This is a reactive approach to network monitoring. The greatest challenge, however, is to improve performance proactively identify bottlenecks Threshold values play a major role here: however, they vary from device to device as well as depending on the application. Immediate notification when threshold values are exceeded Configuring appropriate thresholds will help keep the servers and Proactively monitor resources and services running on network devices. Usually depending on your needs and individual preferences you can take any device with you provide your own interval or threshold values. Multi-level values are special helpful to classify and break down errors that occur. At the same time you can Use the thresholds to automatically be alerted before a device is completely fails or reaches a critical state. What is Network Monitoring, the protocols used

    Dashboards and Customization

    The best data is only helpful if it is understandable for the respective target group being represented. It is especially important for IT administrators that they follow their Registration to be informed immediately about critical key figures. Ideally you should have one Network dashboard give a quick overview of the current status and critical key figures of network devices (e.g. routers, switches, firewalls, servers, services, Printers and Uninterruptible Power Supplies (UPS), applications and URLs contain. A good network monitoring solution should ideally support widgets, with which general and specific performance curves can be monitored in real time. This allows administrators to fix problems quickly and devices remotely monitor.

    High availability and reliability

    What happens if the server on which your usual network monitoring is running crashes? or lose the network connection? In this case, you most likely want to be notified immediately and also want a standby network monitoring automatically takes over. To ensure high availability of a monitoring system every single network event e. B. a drop in performance of Devices, insufficient bandwidth, DoS attacks, etc. - are notified immediately so that you cancan quickly initiate suitable countermeasures. The so-called fail-over and fail-back functionalities ensure that Network environments are always monitored by a secondary standby server. If a failure occurs on the primary server, the secondary server is immediate ready to use to secure the database. This creates a complete network and Device availability guaranteed. Advantages of a fail-over system:

  • Server failures are recognized immediately.
  • Immediate notification by email in the event of a primary server failure
  • 100 percent up-time and uninterrupted network management -Automated and seamless switch from primary to standby server and vice versa

    Choosing the right network monitoring tool

    Artificial intelligence and machine learning

    Since both network monitoring tools and technologies such as artificial intelligence (AI) and machine learning (ML) live from data, they can usually be combined well. For example, network monitoring tools can connect to your Adapt network environment and proactively based on available data Make suggestions. Network monitoring options with AI and ML: Load balancing based on usage Smarter notification profiles Adaptation of the network and the ability to automatically take corrective action to take Forecasts

    Automation

    Due to the rapid development of applications for AI, automation stands on one Turning point. Automation helps network monitoring tools, due to Threshold values or a set of rules / criteria to be followed. Monitoring tools can also use it to automatically identify and correct problems (proactive monitoring), sending alerts and suggestions for better Submit network performance and maintenance (based on usage and priority). Advantages of automation in network monitoring:

  • Ability to automate repetitive tasks
  • Automated configuration and backup provision on all devices
  • Automatic detection and monitoring of new devices
  • Proactive troubleshooting and initiation of corrective action What is Network Monitoring, the protocols used

    Scheduled reporting Functions

    Every network monitoring tool contains features that can be used to address basic Monitor network metrics such as bandwidth, availability and usage to let. An efficient solution should also be common protocols (SNMP, WMI and CLI) and Support technologies (NetFlow, sFlow, jFlow and packet sniffing). Additional features such as configurable alerts, reporting capabilities and customizable Dashboards simplify the use of such tools by the user and help keeping an eye on relevant information. However, before you sign up for a Network monitoring solution, you should first be clear about it: which basic requirements and functions are required for your company are. In addition to the features, there are a few other critical aspects that you must consider when using the Choice should consider Distributed networks It happens that the company network expands considerably like in the case of a Merger or acquisition. In such cases the new network grows within in the shortest possible time and is distributed across new local networks, branches, Customer networks (in the case of managed service providers (MSP)), data centers and the Cloud. Securing the consolidated network can be costly, both what management as well as troubleshooting. This is just in distributed Networks constant monitoring of availability and bandwidth utilization necessary.

    Challenges in monitoring distributed networks

    Centralized Control:

    Monitor multiple remote locations from a central one Location out by controlling specific probes to address performance issues.

    Network maintenance:

    Maintaining the network and troubleshooting Problems Language barrier: display statistics in different languages for the whole Environment at a central point The lack of transparency of a tool is a problem that IT operators and System administrators encounter it frequently. To keep track of your network, you should choose a network monitoring tool that gives you a comprehensive, offers consolidated and detailed insight into various network aspects. Simultaneously you should have the flexibility to choose exactly what you want to see. Ideally be the various information on a single screen with clear Diagrams and intuitive graphics presented. Let some network monitoring tools also expand to perform more complex operations. Hence, you should care be sure to choose a tool that supports add-ons and integration. So can You monitor a broader aspect of your network

    Scalability

    The scalability of the network is also important when choosing an efficient one Network monitoring tools. A network monitoring tool is then to be regarded as scalable, when it comes to changing requirements and desires of a company and its users can customize Scalability helps a network with increased productivity, trends, new requirements and adjustments to keep pace while ensuring the overall performance of the Network is not affected, regardless of its size.