Let’s take a look at a TextFSM template and then break it down to better understand how TextFSM works. These websites are a great help when it comes troubleshooting my TextFSM templates and why something may not be capturing the way I would expect it to. This means that some RegEx knowledge is required, but there are helpful websites such as or that can help get you started with understanding RegEx. TextFSM is a Domain Specific Language (DSL) using RegEx under the hood to parse the data. TextFSM was created by Google to process semi-structured data from network devices into structured data that can be easily accessed programmatically. We will go over what a TextFSM template looks like, how it works, and how we can use the template in Ansible to perform topology assertions against our lab topology. NTC Templates uses TextFSM under the hood to be able to parse the data obtained from traditional networking devices by using Regular Expressions (RegEx). This post will dive deeper into using NTC Templates to parse unstructured data into usable, structured data. While we score it highly, we'd hold off on purchasing anything 802.11ac until client chips are more widespread - by then, there'll likely be something even better around.Thank you for joining me for Part 2 of the parsing strategies blog series. The R6300 is quite a beast of a router, and it certainly gives a promise of things to come. ![]() Netgear covers the R6300 with a two-year warranty. In standard 802.11n 5GHz, the R6300 also manages to perform reasonably well. Still, the potential for wireless HD, high-bitrate video streaming over decent distances is there. It comes with two issues: they don't exist yet, and they'll likely be significantly slower than this bridged connection. It's not going to make your current gear faster, either you'll need an 802.11ac adapter in your laptop, phone or tablet to take advantage of this new speed. This, of course, comes with caveats: the whole point of being wireless is, well, being wireless, and bridging a router and connecting over Ethernet isn't that, nor is it pragmatic. The bridged routers not only blow away the 5GHz score, but the 2.4GHz as well. What's even more interesting is the range our third location is particularly difficult for 802.11n 5GHz, with most laptop adapters failing to see the SSID or not connecting. The results are an extremely promising indication of what 802.11ac performance will be like compared to current 802.11n 5GHz. The bridged entry shows 802.11ac performance when bridged to another Netgear R6300 router, which is then connected via Ethernet to a laptop. (Longer bars indicate better performance) Location three (two floors down, some obstructions) ![]() The wireless throughput is tested using three chipsets (the Atheros AR5008X, Ralink RT2870 and Intel Ultimate-N 6300), and then all results are averaged. The locations are in the same room as the router: one floor down around spiral stairs and with concrete walls and floors, and two floors down under the same conditions. ![]() The test is run for five minutes in three different locations on two separate occasions. We use iperf to determine throughput, running eight streams with a TCP window size of 1MB and an interval of one second. Usually, the router is restricted to the 20MHz band if the option is available. PerformanceĪfter analysing the spectrum with InSSIDer, an empty channel of either 1, 6 or 11 is chosen for 2.4GHz wireless testing. It's clear that Netgear has some work to do here. There was also another option called "Access Control", but all it ever did on our Android phone was show a loading screen it never managed to open the section. Parental controls only work if the router is online, and need you to sign up to the OpenDNS service to manage them.
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