Archive

Archive for the ‘WLAN Troubleshooting’ Category

WizShark Brings Collaboration to Troubleshooting

July 24th, 2014

By Davneetsingh Narang

AirTight offered early beta access to WizShark, our visual WiFi troubleshooting tool in cloud, and since then it has been a fun ride for the team. It was heartening to see a number of WiFi professionals taking interest in the tool and appreciating its graphical representation of packet captures. Of course, the positive feedback was accompanied with, as expected, feature requests!

Apart from graphical representation, we also want to empower collaboration and reporting using this tool. Hey, when people work on tools in cloud, this is expected already, right? Starting on this path, we have added capability for seamless collaboration for team troubleshooting.

Share current views with team members

Old school troubleshooting is with “Share this file with…” functionality, but then it only allows sharing raw traces and not troubleshooting milestones. Realizing that, we added capability in WizShark to share current views with team members. Now there is a button on WizShark menu to share the current view to bring your colleagues up to speed on what you have discovered so far.

Click to enlarge

Share troubleshooting milestones with team members

Clicking on this Share button will open up the Share View dialog which generates a link that you can share with your peers. Your colleague will be on the same page as you in no time, including all the frame-filtering, zooming and slicing that you may have performed on the graph. From this point on, both of you can analyze the graph independently.

Click to enlarge

Generate a link you can share with your peers

Easily create reports for management, customers or troubleshooting community

And then there are times, when you have successfully troubleshot the issue using WizShark and then you want to generate a report for your managers, your customers or for the troubleshooting community. Simply click on the Save as Image icon just above the graph. Save the view in your preferred image format (.png or .jpg) and embed it in your report.

Click to enlarge

Create a report for your managers, customers or troubleshooting community

Are you participating in the WizShark beta? Feel free to tweet your feedback and suggestions to @airtight, @wizshark or write to wizhark @ airtightnetworks.com.

WLAN Troubleshooting

Packet Capture with AP Radios – What’s Under the Hood?

May 19th, 2014

Wireless packet capture has always been important to Wi-Fi professionals and support engineers for resolving network problems. With the diversity of wireless clients that is already around and which is only expected to grow with the Internet of Things (IoT), packet capture capabilities will continue to be critical. Wireless packet capture can be facilitated in the AP radios using the hardware and the driver level hooks. Read on to find out what’s under the hood.

There are two main plumbing points to get frames from wireless up to the application: one in the hardware and the other in the driver software. At the hardware level, the radio supports “Promiscuous Mode” option. When this option is activated, the hardware passes all wireless frames received on the channel where the radio is operating up towards the driver software. When this option is deactivated, the hardware passes only the wireless frames for the MAC of the radio (and the frames like probe requests & beacons based on the additional sub-settings under non-Promiscuous mode) up towards the driver software.

The driver software can operate in AP, STA, or Monitor Mode. 

Read more…

WLAN Troubleshooting

WizShark Beta: Visual Wi-Fi Troubleshooting in the Cloud

May 12th, 2014

WizShark is changing Wi-Fi troubleshooting for the better. This tool is now open for private beta; contact us to join.

Interested in WizShark? Request a private beta account.

Interested in WizShark? Request a private beta account.

At Interop in Las Vegas, a Wireless Field Day delegate and all around wireless guru George Stefanick presented “The Wireless Engineer’s Essential Toolkit” and covered everything you could need to properly deploy, maintain, and troubleshoot a WLAN. George took extra time to emphasize how important it is to quickly get the information needed to diagnose an issue. The attendees were engaged and afterwards the conversations continued in the hallways. It’s clear that people want to know how to use the tools of the trade but not everyone has the time to learn such specific tools (I know I didn’t when I was the resident networking jack-of-all-trades).

Read more…

WLAN Troubleshooting

Network troubleshooting in distributed Wi-Fi environments

November 20th, 2013

Wi-Fi is installed after everything else in the network is already set up – switches, routers, servers, firewalls, VPNs etc. Naturally, customers rely on their Wi-Fi solution provider to alleviate any network problems that arise during the Wi-Fi deployments, even though the problems are not necessarily Wi-Fi specific.

Need Wi-Fi troubleshooting? Call up a networking Jedi!

Need Wi-Fi troubleshooting? Call up a networking Jedi!

Network issues aren’t something new in any project. However, the troubleshooting task becomes challenging when it needs to be done remotely and when there isn’t much onsite IT help. This is often the case with the distributed Wi-Fi deployments. Also, due to the heterogeneity of the network infrastructure in many environments in the distributed vertical, sometimes very stealthy network problems are encountered. Take these recent troubleshooting examples which underscore these points.

Read more…

WLAN Troubleshooting