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Generic troubleshooting processes: Difference between revisions
Generic troubleshooting processes (view source)
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In this tutorial, we’ll go into several topics that might be of interest to you, the user, while working with an Allegro Network Multimeter. | In this tutorial, we’ll go into several topics that might be of interest to you, the user, while working with an Allegro Network Multimeter. | ||
= The basics = | |||
It all starts with basic understanding about what’s actually presented on your screen. When it comes to providing you with elementary yet essential and actionable troubleshooting insights, Allegro has got you covered with the “Top users” and “Quality” dashboards. Both can be found at the top of the control menu, at the left hand side of the web interface. | It all starts with basic understanding about what’s actually presented on your screen. When it comes to providing you with elementary yet essential and actionable troubleshooting insights, Allegro has got you covered with the “Top users” and “Quality” dashboards. Both can be found at the top of the control menu, at the left hand side of the web interface. | ||
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Access to “Top users” and “Quality” screens highlighted in the green box | Access to “Top users” and “Quality” screens highlighted in the green box | ||
==TOP users == | |||
The “Top users” screen is a great place to start your generic troubleshooting workflow. The top users screen provides you with high-level information about what is going on in your network. On this page you will find trending graphs and tables, depicting total packets and bytes for the top 5 IPs, top 5 MACs and top 5 protocols that were traversing your network – during the selected time interval. | The “Top users” screen is a great place to start your generic troubleshooting workflow. The top users screen provides you with high-level information about what is going on in your network. On this page you will find trending graphs and tables, depicting total packets and bytes for the top 5 IPs, top 5 MACs and top 5 protocols that were traversing your network – during the selected time interval. | ||
Toggling between tables and graphs, can be easily done by clicking the respective icon next to the widget’s caption. | Toggling between tables and graphs, can be easily done by clicking the respective icon next to the widget’s caption. | ||
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== IP details page == | |||
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As you can see, it is very easy to look into and investigate the (mis)use of QoS and protocols by an IP. From the IP details page, you can also quickly and easily look into communication relations on the connection level and even dive into the TCP-statistics for that IP. | As you can see, it is very easy to look into and investigate the (mis)use of QoS and protocols by an IP. From the IP details page, you can also quickly and easily look into communication relations on the connection level and even dive into the TCP-statistics for that IP. | ||
= Quality dashboard = | |||
For quality and performance assessment, Allegro’s quality dashboard is a great place to start. All of the most important graphs, related to high level quality and performance monitoring/troubleshooting, are gathered on this page. | For quality and performance assessment, Allegro’s quality dashboard is a great place to start. All of the most important graphs, related to high level quality and performance monitoring/troubleshooting, are gathered on this page. | ||
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== Burst Analysis == | |||
The first graph on Allegro’s predefined quality dashboard, represents “Burst Analysis”. Because the Allegro Network Multimeter supports data measurement intervals (sampling rates), as detailed as 1 ms, you can identify instances where a Link is 100% saturated, for very short fractions of time. Evidently, micro bursts could potentially be a root cause for network performance issues. Other than Allegro Packets, most monitoring & troubleshooting solutions are unable to pick this up, because of “low resolution” data sampling (i.e. 1, 5, or even 10 minutes). | The first graph on Allegro’s predefined quality dashboard, represents “Burst Analysis”. Because the Allegro Network Multimeter supports data measurement intervals (sampling rates), as detailed as 1 ms, you can identify instances where a Link is 100% saturated, for very short fractions of time. Evidently, micro bursts could potentially be a root cause for network performance issues. Other than Allegro Packets, most monitoring & troubleshooting solutions are unable to pick this up, because of “low resolution” data sampling (i.e. 1, 5, or even 10 minutes). | ||
== Response times == | |||
The second graph provides you with trending information about global response times for TCP and HTTP, SSL, DNS plus DHCP. Clicking on “Application”, will bring you to the response time overview page, where trending response time graphs for HTTP, SSL, DNS and DHCP are individually presented. | The second graph provides you with trending information about global response times for TCP and HTTP, SSL, DNS plus DHCP. Clicking on “Application”, will bring you to the response time overview page, where trending response time graphs for HTTP, SSL, DNS and DHCP are individually presented. | ||