.实现WLAN.ppt

? 2007 Cisco Systems, Inc. All rights reserved. ICND1 —-3- 1 无线 LAN 实现 WLAN ? 2007 Cisco Systems, Inc. All rights reserved. ICND1 — 3-2 拓扑的组成部分对等模式:?独立基本服务集(IBSS) –移动客户端直接相连,:?基本服务集(BSS) –移动客户端通过单个接入点彼此相连或连接到有线资源.?扩展服务集(ESS): –两个或多个 BSS 相连,以扩展无线拓扑. ? 2007 Cisco Systems, Inc. All rights reserved. ICND1 — 3-3 BSA 无线拓扑—基本服务区域? 2007 Cisco Systems, Inc. All rights reserved. ICND1 — 3-4 ESA 无线拓扑—扩展服务区域? 2007 Cisco Systems, Inc. All rights reserved. ICND1 — 3-5 无线拓扑的数据率— ? 2007 Cisco Systems, Inc. All rights reserved. ICND1 — 3-6 接入点(AP) 的配置基本参数: ? IP address (static or using DHCP), mask, and default gateway ? Wireless protocol ( only, , ) ? Channel adjustment if needed — channel 1,6, or 11 pending interference ? Power adjustment if needed — or could change antenna Security parameters: ? Service Set Identifier (SSID) — identifies work ? Authentication method — usually WPA or WPA2 PSK ? Encryption method — usually TKIP, or AES if hardware-supported ? 2007 Cisco Systems, Inc. All rights reserved. ICND1 — 3-7 实现无线网络的步骤 Step 1: Verify local wired operation — DHCP and ISP. Step 2: Install the access point. Step 3: Configure the access point — SSID, no security. Step 4: Install one wireless client — no security. Step 5: Verify work operation. Step 6: Configure wireless security — WPA with PSK. Step 7: Verify the work operation. ? 2007 Cisco Systems, Inc. All rights reserved. ICND1 — 3-8 无线客户端 Wireless Zero Configuration (WZC): ? Default on Windows XP or later operating system ? Limited features for basic PSK ? Verify that users have the correct encryption type and password patible Extensions Program ? Accelerated feature deployment of third-party clients ? Wide deployment of various vendors Cisco Secure Services Client ? Enterprise full-featured wireless client supplicant ? Wired and wireless ? 2007 Cisco Systems, Inc. All rights reserved. ICND1 — 3-mon work Issu