Networking Monitoring Blog
Monitoring of network traffic is not a task only left for large networks only there is need to monitor small networks as well. As your network expands there's growing concern that the network administrators have to be aware of and be in a position to deal with different types of traffic that is passing through the network. For this to be achieved then continuous traffic monitoring is required in order to be more effective in troubleshooting and resolving the problem before the entire network is brought down. There are various tools available to aid network admins with the work of analysis and monitoring so that they are proactive rather than reactive in doing their work. This article discusses different tools that can be used to monitor any network. So do not just be duped by the server cases there is more to it when it comes to their performance on the network.
Monitoring and Analysis Techniques
Network analysis involves capturing network traffic data and critically looking at the findings closely to establish the trends in flow traffic on the network. Two main Techniques have been discussed in the article and these are Non Router based monitoring and Router based technique. For Non router based Monitoring additional hardware and software are required to be installed while in router based monitoring the feature is hard coded and chipped in the router and there requires no additional software or hardware instalation
The Router Based Technique
In this Technique a chip with coded software that defines the protocol is inserted into the routers that enable it to work as an inbuilt component. The protocols are briefly discussed below.
Simple Network Monitoring Protocol RFC 1157(SNMP)
It's an application layer of the TCPIP. This allows Network Admins to manage network efficiently by helping in planning the growth and problem detection.
Remote Monitoring RFC 1757 (RMON)
This component allows exchange network monitoring data. It triggers alarms that have been defined to respond in particular situations and alerts the admin to manage well both LANs and remote site.
Non Router Based Technique
This technique has limited abilities but it actually offers a flexible approach when troubleshooting the network. The techniques used are briefly discussed here are namely active and passive.
This investigates the two ends of the network to check for delays or loses in packets the most commonly used tool is ping. An echo is sent and waits for response that determines how the network is performing
Passive monitoring gathers information about the network only one point at a time unlike the active that check end to end in the network. This is enabled by packet sniffing programs.
As a Network Admin you must always have a clear mind of what tools you want to use to monitor the network. You may decide to use the robust systems that have been already proven to be effective or try new one that the market offers. Be sure that whatever technique you settle for must give you accurate results. One of the tools that have been proven to work is NetFlow, this is a very useful tool for data analysis that can be used to give feedback to the admin. Being in on top of network can really make the work of the administrator relatively interesting and improves productivity as there will be now downtime on the network.