Tag Archives: LinkRunner G2

Catching Up With NETSCOUT at MFD3, Big News, and “Body Fade” Explained

Touching Base at Mobility Field Day 3

Everybody’s favorite handheld network tool tester provided updates on their G2 and AirMagnet tools at Mobility Field Day 3. NETSCOUT hosted those of us in attendance at their San Jose office, while simultaneously live-streaming to a lot of interested folks out on the interwebs. We heard about product evolutions coming to the AirCheck G2, the LinkRunner G2, the very handy Link-Live web service, and a little bit on the AirMagnet product line. The G2 improvements are incremental, well-designed, and show that NETSCOUT is not letting grass grow under it’s flagship testers. The AirMagnet brief sounded a bit apologist and fairly thin, but also not unexpected given that the line has gone almost stagnant for long periods of time.

You can watch the presentations for yourself here.

Big News

This one took us by surprise… It’s a bit weird to find out only a couple of days after being at Netscout’s offices that the very product line we were discussing has been sold off to Nacho Libre… or is it StoneCalibre? Whatever… it just feels funky to those of us who know and love our AirCheck and LinkRunner products.  What goes in this move?

  • LinkSprinter
  • LinkRunner (AT & G2)
  • AirCheck
  • OneTouch AT
  • AirMagnet Mobile (Spectrum, Survey, Planner, Wi-Fi analyzer)

Hopefully whoever this new backer is does not mess with all that’s good in the toolbox, and either breathes new life into AirMagnet or retires it. Read about the acquisition here.

Netscout HQ

What the Heck is Body Fade?

bodyfade

During the MFD sessions, we heard about several improvements- including refinements to the AirCheck G2’s Locator Tool. I tweeted out my recent success with the tool, and suggested that anyone using become familiar with “body fade” as technique to make the locator tool even more effective.

A couple of folks gave a thumbs-up, retweet, or similar affirmation, but one fellow emailed me to ask “what are you talking about with body fade?”  Let’s talk about that just a little, using a real-world case from my adventures in G2 Land.

The notion of body fade comes into play in any situation where you have a hand-held receiver in your hand (like the AirCheck G2 or a small ham radio with a bandscope display) and are trying to locate the origin of a signal of interest. By putting my body- including my rock-hard abs- between the signal and the tester, you can make the signal strength drop enough to notice. That means that the signal is somewhere behind you… do this enough times, and you get a really good sense of where to go look for the device faster than just running around staring at the dancing signal needle.

In my example, we see this rascally rogue running rebellious somewhere in another part of my building:
locate5By golly, that’s not one of mine. We gotta find the interloper and teach him or her some manners, I tellya. I fire up the AirCheck G2, invoke the locate option, and see what I see in my office.
Locate4
Not so impressive yet. We have a fairly weak signal somewhere. But how to get started on this foxhunt? BODY FADE to the rescue. I hold the G2 in front of my Adonis-like physique and slowly turn (the slowly part is important)… until I see a 3-4 dBm DROP in signal strength. This is my body inducing loss to the signal and thus showing you where to turn around and what direction to walk towards…

OK… so I start walking, and I’m making progress. The signal is getting stronger, and I use body fade to help further refine my path. But alas- I hit an obstacle! Once I get to THIS signal strength, I’m bamboozled:

Locate 3Nothing I can do from the spot of this reading with body fade changes the signal strength at all. If I walk away from the spot in any direction, the signal drops, but it is strong in this one spot. Yet the rogue is absolutely not there (in a hallway). What gives?

Remember that we’re dealing with signaling in three dimensions. When body fade at X-marks-the-spot yields no changes in signal strength, it means it’s time to go upstairs or down. In my case, there is no downstairs, so up I went. I picked up the trail, and soon hit the jackpot:
locate2
This was screen-shotted in the doorway of the office where the offending device was found. After roughing up both the rogue router and the gent who dared to plug it in, balance was restored to The Force.

Body fade is pivotal to some really neat radio hobbies- like this one.

 

 

 

 

NETSCOUT’s Next-Gen LinkRunner Tester Is Ready For The Changing Network Landscape

Just when you thought that maybe all of the cool testing innovation was reserved for Wi-Fi and the likes of the AirCheck G2, NETSCOUT brings out an equally impressive wired networking tester. The new LinkRunner G2  (shown on left below) sports the same color scheme and physical profile as the AirCheck G2:

IMG_20171127_140442975

But a closer look topside reveals some tell-tale features:

IMG_20171127_142046889_BURST000_COVER_TOP

What isn’t obvious from these images is that NETSCOUT made the LinkRunner G2 with a whole new user-customizable philosophy in mind that applies to both hardware and software. See the fiber SFP on the left and the USB WLAN adapter on the right side in the second image? You don’t HAVE TO get those from NETSCOUT if you find a better price on similar interfaces elsewhere. Unlike some vendors, NETSCOUT opted to be very accommodating of 3rd party adapters. And the LinkRunner G2 is actually a hardened Android computing platform that you can tweak in a number of ways- but let’s come back to that in a bit.

Recognizing the LAN-Scape For What It’s Becoming

In talking with LinkRunner’s product management, I was able to hear the inside scoop on where the company sees the product fitting into the connected world. It’s no secret that the number and type of network-connected devices “out there” is skyrocketing, but investment in support staff and their capabilities isn’t for many organizations. That being said, the LinkRunner G2 is viewed by NETSCOUT as the “smart network tester for the connected world”. Now, I’m as buzzphrase-adverse as anyone, but the deeper you dig into the LRG2, the more you realize that NETSCOUT is not over-hyping the new tester’s capabilities. With strong physical layer support capabilities, LRG2 is handy before the network even goes live. On active networks, Ethenet and core services are tested and characterized nicely. Then there are the true differentiators- and Power over Ethernet (PoE) functionality is a prime example.

Robust PoE Measurement and Charging

NETSCOUT points out that today’s LAN environment is no longer just a client-access domain, it’s also a power-distribution system for a growing number of devices. Beyond VoIP phones, CCTV cameras and wireless access points, we now have lighting systems, locks, and Bluetooth sensors among the many devices using PoE for operating power.

Netscout describes the LRG2 as the only current tester fully able to support all versions of PoE including Universal PoE (UPOE) that sources 60 watts at the switchport and up to 51 watts at the field jack. And this LinkSprinter also charges off of PoE!

Screenshot_20171127-184138

Link-Live

Depending what other NETSCOUT (or Fluke Networks) tools you use, you may already be a Link-Live user.

 

Link-Live makes the storing, sharing, and reporting of test results and absolute cakewalk. When you have a number of staff with varying skillsets, NETSCOUT’s Link-Live-capable tools can bring a uniformity of testing that reduces errors and faulty troubleshooting, and makes the results available for reference and escalation. It’s a free service, and LinkSprinter G2’s tests are as well formatted as the likes of the AirCheck G2’s. I’m a fan.

The Multi-Function Tester That You Can Customize

This tester is still a LinkSprinter, so you’d expect to see views like this on the crystal-clear touchscreen as you test copper and fiber links:

 

But there is sooooo much more. Remember, I said that this is a full-blown Android device. It also happens to have many “phone-like” features including a built-in flashlight, camera (attach pictures to Link-Live reports or email them from the LRG2), web browser, screen shot capabilities, Micro SD slot for file storage and portability, and even access to other apps that can be installed on the tester.

Screenshot_20171127-184637

This is so handy, and almost too good to be true. The caveat to the starting app paradigm? You don’t have access to the full Play Store. This is a hardened Android device after all, and you do not log in to the Play Store with your own account. But you do have access to a wide range of vetted network/documentation/productivity apps via NETSCOUT’s partnership with Google. If you find an app that you’d like, NETSCOUT provides an easy path to request it.

Within five minutes after discovering this capability, I had my test unit nicely loaded with some of the same Wi-Fi and network apps I use on my own Android phone and tablets, and the ability to run them all off of a robust network tester feels incredibly empowering.

Screenshot_20171127-184155

There is just a lot here to appreciate in the LinkRunner G2. It’s clear that NETSCOUT was shooting for versatility and expandibility with this network tester, and they hit both targets nicely.

Learn more at product web site.