Wireless Networks 2015 CTSP Course CTSP Clsss Wireless - February 20151

 Wireless Bridge  Wireless Router  Access Point  LAN Switch  Wireless Client Equipment CTSP Clsss Wireless - February 20152

OSI Model (Stack) CTSP Clsss Wireless - February 2015or3

 WAN port  Gateway to Internet Service Provider (ISP)  DSL modem provided by ISP  Limited LAN ports (4 ports is common)  Can service as a wireless access point with limited clients (16 is common)  Limited firewall capability Wireless Router CTSP Clsss Wireless - February 20154

 One LAN port connection  No WAN port (can not directly connect to ISP as a router)  Extends your wired LAN through the use of radio frequency (RF) and by definition it’s simply a bridge  AP is an one to many clients implementation of a bridge (client bridge)  IEEE (a, b, g, n, ac) standard Access Point (AP) CTSP Clsss Wireless - February 20155

 Point to Point implementation that extends one physical LAN to another physical LAN within the same collision domain  Instead of using cable, Radio waves are used as a medium (conduit)  Layer 2 of the OSI model using MAC addresses (nodes)  Does not see IP addresses, therefore not routable  Ex: Connects two adjacent building in a campus shared across same broadcast domain Wireless Bridge CTSP Clsss Wireless - February 20156

7 Bridge Pair Site A Site B

McClellan Campus Dorms APs CTSP Clsss Wireless - February 20158

McClellan Dorms Bridges CTSP Clsss Wireless - February 20159

Wireless Standard a b g n & ac CTSP Clsss Wireless - February

 Operates in the 5.15GHz to 5.35GHz radio spectrum.  Speed: Up to 54Mbps (actual throughput is closer to 22Mbps)  Range: 115 feet indoor  Less prone to interference.  More expensive and use in enterprise implementation  Because b and a use different radio technologies and portions of the spectrum, they are incompatible with one another a CTSP Clsss Wireless - February

 Operates in the 2.4GHz radio spectrum  Speed: Up to 11Mbps  Range: 115 feet indoor  Prone to interference (it shares airspace with cell phones, Bluetooth, security radios, and other devices).  Least expensive wireless LAN specification b CTSP Clsss Wireless - February

 Operates in the 2.4GHz radio spectrum.  Speed: Up to 54Mbps  Range: 125 feet indoor  Prone to interference (it shares airspace with cell phones, Bluetooth, security radios, and other devices) g CTSP Clsss Wireless - February

 Operates in the 2.4 or 5GHz radio spectrum (dual band)  Speed: Up to 700Mbs  Range: 230 feet indoor  Because b and g use the same radio technologies and portions of the spectrum, they are compatible with one another n CTSP Clsss Wireless - February

 Bandwidth: Up to 1000 Mb/s (multi-station) or 500 Mb/s (single-station)  Range: 115 feet indoor  Beamforming (targets clients)  Frequency range: 5.0 GHz  Multi-user MIMO  Spatial Streams  3 Waves of implementation  Currently in wave 1 -- wave 2 devices in ac (new) CTSP Clsss Wireless - February

802.11ac CTSP Clsss Wireless - February

 PicoStation2 setup in bridge mode  Extend your Cat5 LAN with WLAN  IP addresses of your WLAN is in the same broadcast domain as your wired LAN  ISP router will provide DHCP and DNS services  Try using open network first and then WEP key for encryption  Test all your clients for connectivity CTSP Clsss Wireless - February Exercise 1 AP Bridge

 PicoStation2 setup in router mode  Extend your Cat5 LAN with WLAN but this time create another LAN just for WiFi WLAN  IP addresses of your WLAN is in a different broadcast domain than your wired LAN (IP addresses is not the same as wired)  Your AP will provide DHCP and DNS services inherited ISP’s router  Use WPA2 / AES  Test all your clients for connectivity CTSP Clsss Wireless - February Exercise 2 AP as Router