Wireless LANs(WLANs) Chapter 5 Updated January 2009 Panos Business Data Networks and Te/ecommunications. 6th edition in0d00dt0ndoo Copyright 2007 Prentice-Hall May only be used by adopters of the book
Chapter 5 Updated January 2009 Panko’s Business Data Networks and Telecommunications, 6th edition Copyright 2007 Prentice-Hall May only be used by adopters of the book Wireless LANs (WLANs)
Orientation LANs Are Governed by Layer 1 and 2 Standards So they are governed by osl Standards · Wired lan standards Chapter 3(UTP and optical fiber transmission) Chapter 4(Ethernet 802. 3 Layer 1 and 2 standards) Chapter 5 Wireless LAN (WLAN Standards Physical layer wireless transmission Wireless data link layer operation Management 5-2
5-2 Orientation • LANs Are Governed by Layer 1 and 2 Standards – So they are governed by OSI Standards • Wired LAN Standards – Chapter 3 (UTP and optical fiber transmission) – Chapter 4 (Ethernet 802.3 Layer 1 and 2 standards) • Chapter 5 – Wireless LAN (WLAN) Standards – Physical layer wireless transmission – Wireless data link layer operation – Management
Figure 5-1: Local wireless Technologies, Continued ·802.11 The dominant WLan technology today Standardized by the 802. 11 Working Group 802.11 5-3
5-3 Figure 5-1: Local Wireless Technologies, Continued • 802.11 – The dominant WLAN technology today – Standardized by the 802.11 Working Group 802.11
I Figure 5-2: Wireless LAN(WLAN) Access Point Large wired ethernet LaN Wireless Access Ethernet Switch Point UTP Radio Transmission Laptop Router Mobile Communication C lient Server Wireless access point (WAP)bridges wireless stations to resources on wired LAN-servers and Internet routers for Internet access
5-4 Figure 5-2: Wireless LAN (WLAN) Access Point Server Internet Router Ethernet Switch Laptop Mobile Client Wireless Access Point Large Wired Ethernet LAN UTP Radio Transmission Wireless access point (WAP) bridges wireless stations to resources on wired LAN—servers and routers for Internet access Communication
Figure 5-3: Access Router with Wireless Access Point and wireless Nics PC Card WNIC for a notebook Computer Access Router With Access point USB WNIC Internal WNIC For desktop p( 65
5-5 Figure 5-3: Access Router with Wireless Access Point and Wireless NICs PC Card WNIC for a Notebook Computer Internal WNIC For Desktop PC USB WNIC Access Router with Access Point