FREE WIRESHARK Lecture 4 - Navigation

 

Thanks for the positive feedback and comments.

Some long-time Wireshark users commented that it was a good refresher and they actually learned a thing or two, while others new to Wireshark enjoyed the info and pace.

Heres' the next one

FREE WIRESHARK Lecture 4 - Navigation

Damaged Network Cables: Why Layer 1 Shortcuts Cost You Performance and Uptime

 In this installment of his "2 bits" video series, network trainer and consultant Tony Fortunato tackles a recurring frustration he sees in the field: physically damaged network cables still being used in production. He points to common culprits like broken RJ45 connector tabs, torn or split cable cladding, and the classic move of splicing two cables together and wrapping the joint in electrical tape.

Wireshark vs. Firebug vs. Fiddler: Comparing Debugging Tools for Platform, Cost, and Features

 Need to find a debugging program that meets your needs? There are plenty of options out there, so you need to know which one will give you what you're looking for. Wireshark, Firebug and Fiddler are all good options, so let's take a look and see how they compare.

Know your network, know your tool

 Things are tough when you need to troubleshoot your tool.

I was getting ready to setup my Profishark IOTA inline capture device (https://www.profitap.com/iota/) on a link. This shouldn’t cause an issue since I’ve done it countless times. Famous last words always start with ‘should’.

I powered the unit up, logged into it and connected it inline and no packets were traversing the unit. I double checked and everything was connected properly. Hmmmm.

I removed the IOTA and checked the 2 switch ports and noticed that even though they were 1 Gig ports, the speed reported was 100 Mbps. First I saw it in my Optiview XG switch report, then I confirmed it by manually checking both ports.

I’ve seen cabling issues (length termination, noise. etc) and interfaces do this in the past, so I tried changing the IOTA ethernet port to 100 Mbps and everything worked.  

Good to know, and the next thing I did was equally as important… I put a posit note on the IOTA stating that the Ethernet port was manually configured for 100 Mb for future reference.

WIRESHARK CLASS - Lecture 3 , 2, 1

 

Thanks for the the positive feedback and comments people sent about the first Wireshark class post...

Some long time Wireshark users commented that it was a good refresher and they actually learned a new thing or two, while others new to Wireshark enjoyed the info and pace.