Network analysers

While Wireshark is by far the most common network analysis tool, there are also some other tools that can be used in times of trouble. Some of them are:

• Riverbed Cascade suite of tools: This is developed by the Wireshark guys and provides a graphical analysis of Wireshark files. It can be found at http://www.riverbed.com/products-solutions/products/performance-management/
• WildPackets OmniPeak: I've used this in some cases for heavily loaded networks, which my laptop with Wireshark couldn't handle. It has great statistics tools and works well under heavy loads. It can be found at http://www.wildpackets.com/products/omnipeek_network_analyzer.

There are probably more, but these are the two I've worked with and both do a great job.

There is a simple analysis tool in some Cisco devices that comes as a part of the IOS. Cisco calls it Mini Protocol Analyzer, and you can find it at https://www.cisco.com/en/US/docs/routers/7600/ios/12.2SR/configuration/guide/mpa.html...