However, there is a tool called Wireshark, which is an open-source and GPL licensed application used to capture the data packets in real-time. Some are paid, and some are free of cost. There are many tools and software available on the internet for analyzing and troubleshooting a network. On the other hand, long delays or excessive latency are undesirable since they degrade the user experience. The term “low latency” refers to data transfer delays that are relatively short. As a result, it is defined as the round trip – the time it takes for a request to be recorded, processed, and then received by the user, where it’s decoded. This time delay also includes the time it takes a server to complete the request. A user’s activity is the request, and the response time of a web application is the time it takes to answer this request.

Let’s see how you can troubleshoot network latency.Īny action requiring the usage of the network, like opening a web page, clicking a link, or opening an app and playing an online game, is called an activity. This makes my traces much easier to read, and hopefully will do the same for you!īonus, here’s my current Wireshark filter for working EPC/IMS: (diameter and != 280) or (sip and !(sip.Method = 'OPTIONS') and !( = 'OPTIONS')) or (smpp and (mand_id != 0x00000015 and mand_id != 0x80000015)) or (mgcp and !( = 'AUEP') and !( latency is the delay in transmitting requests or data from the source to destination in a network ecosystem. You’ll only see DNS Queries and Responses for domains at the domain. When I run traces, I’ve always found I get swamped with DNS traffic, UE traffic, OS monitoring, updates, etc, all combine into a big firehose – while my Wireshark filters for finding EPC and IMS traffic is pretty good, my achilles heel has always been filtering the DNS traffic to just get the queries and responses I want out of it.īy adding this to your Wireshark filter: dns contains 33:67:70:70:6e:65:74:77:6f:72:6b:03:6f:72:67:00 If you work with IMS or Packet Core, there’s a good chance you need DNS to work, and it doesn’t always.

Wireshark dns filter