Intelligent CIO Middle East Issue 06 | Page 29

TALKING BUSINESS 7 Password-based Wi-Fi networks are secure Password-based networks experience high rates of user disruption. Disconnected devices try to connect back to the network as many as 30,000 authentication requests per day per student. The solution to this is certificate-based Wi-Fi. Certificates mean that passwords are not cached or transmitted every connection attempt. In essence, a device registered once should continue to work without disruption. This means happier users and fewer support tickets. 8 All Access Points are created equal To many purchasing managers, Wi-Fi is just Wi-Fi. It’s a utility and one AP is as good as the next. While all major brand APs are based on standard chipsets, there is always room to do more above and beyond the standards. Wi-Fi challenges are everywhere on campus, from the grounds itself, where full-bar coverage and capacity anywhere, anytime is expected, to the residence halls, which have become a nesting ground for gadgets embedded with consumer Wi-Fi. Not all access points are created equally, and it is important that all aspects of design have been optimised based on how the AP will be used or where it will be deployed. 9 more power. However, switch upgrades are not necessary to support these newer standards. More advanced APs will shut down the USB port and secondary Ethernet port when PoE power is insufficient for full operation, conserving enough power to keep Wi-Fi speeds at maximum levels. 6 Increasing transmit power improves coverage Wi-Fi coverage simply isn’t coverage unless devices can consistently access www.intelligentcio.com the Wi-Fi network. Increasing AP transmit power may increase coverage, but multipath characteristics are different in each environment local to each AP. While increasing the transmit power makes it more likely that APs will be able to consistently send data to devices, it does nothing to make it more likely that APs will be able to receive data from devices. In fact, some devices reduce their transmit power to prolong battery life when connected to a more powerful AP, thus creating worse coverage. More broadband solves most problems For IT professionals there is more to managing a wireless network than purely delivering more broadband. Even the fastest Wi-Fi networks will come to a crawl if there isn’t enough distribution or backhaul. The “problem” could be related to onboarding and passwords, network storms or interference – all unrelated to the bandwidth provided. Performance speaks volumes, and with this newfound knowledge debunking the myths surrounding campus Wi-Fi deployments IT professionals can future-proof their network to provide the next generation of kids instant access to world without walls. INTELLIGENTCIO 29