Like many Network Engineers, I have also heard all to often that "The Network is Slow". This is the mantra repeated across the World by end users, server admins and application developers.
Luckily, we are armed with a tool set to not only exonerate the network (in most cases) but also pinpoint exactly where the problem occurred.
Being a Packet Fetcher, the first thing I typically turn to in these situations is handy dandy PCAP(s). In this first case study, we will see how to quickly solve this performance issue given the correct trace files from, more importantly, the correct areas of the network. See the following diagram of the capture points as well as the video at the end of the post.
Mike Canney specializes in providing application and network performance consulting services.
Overthe past 26 years Mike has helped 1,000’s of companies identify and resolve their application and network performance issues. Mike has also developed coursework and taught engineers how to identify, re-mediate, and prevent network and application issues by analyzing traffic flows at the packet level.
Mike has been a guest speaker at many industry trade shows (such as Interop, Wireshark "Sharkfest" and Cisco Live) throughout the United States on the topic of application performance analysis.
Mike can be reached at firstname.lastname@example.org