Chapter 7: Các khái niệm cơ bản về Wireless potx

Chapter 7: Basic Wireless C t d C fi ti C oncep t s an d C on fi gura ti on CCNA Exploration 4.0 1 Objectives • Describe the components and operations of basic wireless LAN topologies wireless LAN topologies . • Describe the components and operations of basic wireless LAN securit y . y • Configure and verify basic wireless LAN access. • Configure and troubleshoot wireless client access. Học viện mạng Bach Khoa - Website: www.bkacad.com 2 The Wireless LAN Học viện mạng Bach Khoa - Website: www.bkacad.com 3 Why Use Wireless? • Business networks today are evolving to support people who are on the move. • Mobility environment: where people can take their connection to the network along with them on the road. • There are many different infrastructures (wired LAN • There are many different infrastructures (wired LAN , service provider networks) that allow mobility like this to happen, but in a business environment, the most important is the WLAN. • People now expect to be connected at any time and place Học viện mạng Bach Khoa - Website: www.bkacad.com 4 Wireless Technologies Học viện mạng Bach Khoa - Website: www.bkacad.com 5 Wireless Will Be Everywhere WAN (Wide Area Network) LAN MAN (Metropolitan Area Network) PAN (Personal Area Nt k) LAN (Local Area Network) N e t wor k) Học viện mạng Bach Khoa - Website: www.bkacad.com 6 Wireless LAN Học viện mạng Bach Khoa - Website: www.bkacad.com 7 Comparing a WLAN to a LAN • In an 802 3 Ethernet LAN each client has In an 802 . 3 Ethernet LAN , each client has a cable that connects the client NIC to a switch. The switch is the point where the client g ains access to the network. g • In a wireless LAN, each client uses a wireless adapter to gain access to the network throu g h a wireless device such as Học viện mạng Bach Khoa - Website: www.bkacad.com 8 g a wireless router or access point. What is WLAN RF Technology? Học viện mạng Bach Khoa - Website: www.bkacad.com 9 Modulation Học viện mạng Bach Khoa - Website: www.bkacad.com 10 [...]... (Indoor UNII-1 and UNII-2) Học viện mạng Bach Khoa - Website: www.bkacad.com 20 Wireless standards Học viện mạng Bach Khoa - Website: www.bkacad.com 21 Wireless Infrastructure Components Học viện mạng Bach Khoa - Website: www.bkacad.com 22 Configurable Parameters for Wireless Endpoints • • • Wireless mode Wireless Network Name: SSID Wireless Channel: Học viện mạng Bach Khoa - Website: www.bkacad.com 23 802.11... 802.11 Association Học viện mạng Bach Khoa - Website: www.bkacad.com 32 Planning the Wireless LAN Học viện mạng Bach Khoa - Website: www.bkacad.com 33 Planning the Wireless LAN Học viện mạng Bach Khoa - Website: www.bkacad.com 34 Planning the Wireless LAN Học viện mạng Bach Khoa - Website: www.bkacad.com 35 Planning the Wireless LAN Học viện mạng Bach Khoa - Website: www.bkacad.com 36 . Chapter 7: Basic Wireless C t d C fi ti C oncep t s an d C on fi gura ti on CCNA Exploration 4.0 1 Objectives • Describe the components and operations of basic wireless LAN topologies wireless . basic wireless LAN securit y . y • Configure and verify basic wireless LAN access. • Configure and troubleshoot wireless client access. Học viện mạng Bach Khoa - Website: www.bkacad.com 2 The Wireless. g • In a wireless LAN, each client uses a wireless adapter to gain access to the network throu g h a wireless device such as Học viện mạng Bach Khoa - Website: www.bkacad.com 8 g a wireless