CCNA Wireless Official Exam Certification Guide part 20 potx

162 CCNA Wireless Official Exam Certification Guide Exam Preparation Tasks Review All the Key Concepts Review the most important topics from this chapter, noted with the Key Topics icon in the outer margin of the page. Table 9-5 lists a reference of these key topics and the page num- ber where you can find each one. Complete the Tables and Lists from Memory Print a copy of Appendix B, “Memory Tables,” (found on the CD) or at least the section for this chapter, and complete the tables and lists from memory. Appendix C, “Memory Tables Answer Key,” also on the CD, includes completed tables and lists to check your work. Table 9-5 Key Topics for Chapter 9 Key Topic Item Description Page Number Figure 9-3 ARPing for the gateway 149 Figure 9-4 ARP request 150 Figure 9-5 ARP forwarded in LWAPP frame 150 Figure 9-6 WLC forwarding the ARP toward the gateway 151 Figure 9-7 Gateway responds to ARP 152 Figure 9-8 WLC receives ARP reply from GW and con- verts it to LWAPP 153 Figure 9-9 WLC forwards LWAPP frame to AP 154 Figure 9-10 Native VLAN mismatch 155 Table 9-2 VLAN creation commands 157 Example 9-2 Creating VLANs 159 Table 9-3 Port assignment commands 158 Example 9-3 Assigning a port to a VLAN 160 Table 9-4 Enable trunking commands 160 10_1587202115_ch09.qxp 9/29/08 2:39 PM Page 162 Chapter 9: Delivering Packets from the Wireless to Wired Network 163 Table 9-6 Chapter 9 Command Reference Command Description vlan vlan-id Creates a VLAN switchport mode access Configures a port as an access port switchport access vlan vlan-id Assigns a VLAN to a port switchport mode trunk Enables a port to act as a trunk port switchport trunk native vlan vlan-id Sets the native VLAN on a trunk show interface status Verifies VLAN assignments show interface trunk Verifies trunk configurations Definition of Key Terms Define the following key terms from this chapter, and check your answers in the Glossary: lightweight AP, WLC, ARP, SA, TA, RA, DA, LWAPP, VLAN, access port, trunk port, 802.1Q, native VLAN Command Reference to Check Your Memory This section includes the most important configuration and EXEC commands covered in this chapter. To check to see how well you have memorized the commands as a side effect of your other studies, cover the left side of Table 9-6 with a piece of paper, read the de- scriptions on the right side, and see whether you remember the command. End Notes 1 Configuring VLANs, http://tinyurl.com/588kw9 10_1587202115_ch09.qxp 9/29/08 2:39 PM Page 163 Cisco Published 640-721 IUWNE Exam Topics Covered in This Part Install a basic Cisco wireless LAN ■ Describe the basics of the Cisco Unified Wireless Network architecture (Split MAC, LWAPP, stand-alone AP versus controller-based AP, specific hardware examples) ■ Describe the Cisco Mobility Express Wireless architecture (Smart Business Communication System — SBCS, Cisco Config Agent — CCA, 526WLC, 521AP - stand-alone and controller-based) ■ Describe the modes of controller-based AP deployment (local, monitor, HREAP, sniffer, rogue detector, bridge) ■ Describe controller-based AP discovery and association (OTAP, DHCP, DNS, Master-Controller, Primary-Secondary-Tertiary, n+1 redundancy) ■ Describe roaming (Layer 2 and Layer 3, intra-controller and inter-controller, mobility groups) ■ Configure a WLAN controller and access points WLC: ports, interfaces, WLANs, NTP, CLI and Web UI, CLI wizard, LAG AP: Channel, Power ■ Configure the basics of a stand-alone access point (no lab) (Express setup, basic security) ■ Describe RRM Install Wireless Clients ■ Describe client OS WLAN configuration (Windows, Apple, and Linux.) ■ Install Cisco ADU ■ Describe basic CSSC ■ Describe CCX versions 1 through 5 11_1587202115_part2.qxd 9/29/08 2:44 PM Page 164 Chapter 10 Cisco Wireless Networks Architecture Chapter 11 Controller Discovery and Association Chapter 12 Adding Mobility with Roaming Chapter 13 Simple Network Configuration and Monitoring with the Cisco Controller Chapter 14 Migrating Standalone APs to LWAPP Chapter 15 Cisco Mobility Express Chapter 16 Wireless Clients Part II: Cisco Wireless LANs 11_1587202115_part2.qxd 9/29/08 2:44 PM Page 165 This chapter covers the following subjects: The Need for Centralized Control: Briefly dis- cusses the need for centralized control in a wireless deployment. The Cisco Solution: Looks at the Cisco Unified Wireless Network. The CUWN Architecture: Covers the devices in a Cisco Unified Wireless Network. 12_1587202115_ch10.qxp 9/29/08 2:40 PM Page 166 CHAPTER 10 Cisco Wireless Networks Architecture Table 10-1 “Do I Know This Already?” Section-to-Question Mapping Foundation Topics Section Questions The Need for Centralized Control 1 The Cisco Solution 2–7 The CUWN Architecture 8–17 In the past, wireless networks were deployed on an AP-by-AP basis, and the configuration for each AP was stored on the AP itself. Management solutions existed, but all in all this is not a scalable solution. The Cisco Unified Wireless Solution involves an AP that is man- aged by a controller device. The controller devices can manage multiple APs. The AP con- figuration is performed on the controller, and each AP added to the network gets its configuration from a controller. This makes it a more viable solution for large enterprise networks. You should do the “Do I Know This Already?” quiz first. If you score 80 percent or higher, you might want to skip to the section “Exam Preparation Tasks.” If you score below 80 percent, you should review the entire chapter. Refer to Appendix A, “Answers to the ‘Do I Know This Already?’ Quizzes,” to confirm your answers. “Do I Know This Already?” Quiz The “Do I Know This Already?” quiz helps you determine your level of knowledge of this chapter’s topics before you begin. Table 10-1 details the major topics discussed in this chapter and their corresponding quiz questions. 1. What kind of AP does a controller manage? a. Lightweight AP b. Managed AP c. LDAP AP d. Autonomous AP 12_1587202115_ch10.qxp 9/29/08 2:40 PM Page 167 168 CCNA Wireless Official Exam Certification Guide 2. Which of the following is not a functional area of the Cisco Unified Wireless Net- work? a. AP b. Controller c. Client d. ACS 3. Of all the Cisco Wireless LAN Controllers, what is the greatest number of APs you can support? a. Up to 50 b. Up to 150 c. Up to 300 d. Up to 30,000 4. What protocol is used for communication between an AP and a WLC? a. STP b. LWAPP c. LDAP d. TCP 5. Which of the following functions does the controller handle? (Choose all that apply.) a. Association b. Reassociation when you have clients that are roaming c. The authentication process d. Frame exchange and the handshake between the clients 6. Which of the following functions does the AP handle? (Choose all that apply.) a. Buffer and transmit the frames for clients that are in power-save mode b. Frame bridging c. Send responses to probe requests from different clients on the network d. Forward notifications of received probe requests to the controller 7. How many VLANs does an AP typically handle? a. 13 b. 15 c. 16 d. 512 12_1587202115_ch10.qxp 9/29/08 2:40 PM Page 168 Chapter 10: Cisco Wireless Networks Architecture 169 8. How many elements comprise the CUWN architecture? a. 5 b. 10 c. 15 d. 20 9. Which of the following APs support 802.11a/b and g? (Choose all that apply.) a. 1130AG b. 1240AG c. 1300 series d. 1400 series 10. Which AP supports the 802.11n draft version 2.0? a. 1250 series AP b. 1240 AG c. 1300 series d. 1130 AG 11. When an AP operates in H-REAP mode, where would it be seen? a. In a campus b. At the remote edge of a WAN c. In the data center d. Bridging site-to-site 12. The 4400 series WLC, model AIR-WLC4404-100-K9, can support up to how many APs? a. 50 b. 100 c. 300 d. 600 13. True or false: An AP must run the same version of code as the controller. a. True b. False 14. What type of device is the 3750G series Wireless LAN Controller integrated into? a. A router as a module b. A router as part of the code c. A 3750 series switch d. It’s a blade for the 6500 series. 12_1587202115_ch10.qxp 9/29/08 2:40 PM Page 169 170 CCNA Wireless Official Exam Certification Guide 15. How many APs can the Cisco WiSM manage? a. 100 b. 150 c. 300 d. 600 16. How many lightweight APs can you have in a mobility domain? a. 512 b. 1024 c. 3068 d. 7200 17. With wireless network management, what device is used to track more than one device at a time? a. WCS b. WCS navigator c. Location appliance d. Rogue AP detector 12_1587202115_ch10.qxp 9/29/08 2:40 PM Page 170 Chapter 10: Cisco Wireless Networks Architecture 171 Network Management Network Services Network Unification CUWN Functional Areas Access Points Wireless Clients Figure 10-1 Quick Look at the CUWN Foundation Topics The Need for Centralized Control There is certainly a need for centralized control in wireless deployments today. Initial wireless deployments were based on standalone access points called autonomous access or fat APs. An autonomous AP is one that does not rely on a central control device. Al- though this is a great start, the problem lies in scalability. Eventually, you will have prob- lems keeping your configurations consistent, monitoring the state of each AP, and actually taking action when a change occurs. You end up with holes in your coverage area, and there is no real dynamic method to recover from that. There is certainly a need for central- ized control, and the Cisco Unified Wireless Network (CUWN) is based on centralized control. Eventually you will want or need to convert those standalone APs, if possible, to light- weight APs. A lightweight AP is managed with a controller. Traditionally after a site survey, you would deploy your wireless network based on the in- formation you gathered. As time passes, the environment you did the original site survey in will change. These changes, although sometimes subtle, will affect the wireless cover- age. The CUWN addresses these issues. An AP operating in lightweight mode gets its configuration from the controller. This means that you will perform most of your configuration directly on the controller. It dy- namically updates the AP as the environment changes. This also allows all the APs to share a common configuration, increasing the uniformity of your wireless network and eliminat- ing inconsistencies in your AP configurations. The Cisco Solution The CUWN solution is based on a centralized control model. Figure 10-1 illustrates the numerous components of the CUWN. As you can see, five functional areas exist: ■ Wireless clients 12_1587202115_ch10.qxp 9/29/08 2:40 PM Page 171 . Autonomous AP 12_158 7202 115_ch10.qxp 9/29/08 2:40 PM Page 167 168 CCNA Wireless Official Exam Certification Guide 2. Which of the following is not a functional area of the Cisco Unified Wireless Net- work? a 162 CCNA Wireless Official Exam Certification Guide Exam Preparation Tasks Review All the Key Concepts Review the most important. blade for the 6500 series. 12_158 7202 115_ch10.qxp 9/29/08 2:40 PM Page 169 170 CCNA Wireless Official Exam Certification Guide 15. How many APs can the Cisco WiSM manage? a. 100 b. 150 c. 300 d. 600 16.