1. Ch. 5 – Access Points Cisco Fundamentals of Wireless LANs version 1.1 Rick Graziani Cabrillo College

2. Rick Graziani graziani@cabrillo.edu2 Overview

3. Access Point Connection

4. Rick Graziani graziani@cabrillo.edu4 Introduction

5. Rick Graziani graziani@cabrillo.edu5 Radio Upgrade 802.11g chip now shipping

6. Rick Graziani graziani@cabrillo.edu6 Cable and Power Cisco Aironet 1100 and 1200 Series, can be powered over Ethernet with: –Switch with inline power (Option 1) –Inline power patch panel (Option 2) –Optional inline power injector (Option3) –Universal power supply (Option 4)

7. Rick Graziani graziani@cabrillo.edu7 Cable and Power WARNING Never connect both the DC power to the AP power port and inline power simultaneously

8. AP Installation

9. Rick Graziani graziani@cabrillo.edu9 LED indicators The LED lights on an access point convey status information. When the access point is powering on, all three LEDs normally blink. After bootup, the colors of the LEDs represent the following: –Green LEDs indicate normal activity. –Amber LEDs indicate errors or warnings. –Red LEDs mean the unit is not operating correctly or is being upgraded. 1100 AP1200 AP

10. Rick Graziani graziani@cabrillo.edu10 Reset the AP (Power On) When beginning a lab, to make sure the AP has the default settings, you will reset the AP. Follow these steps to reset the access point to factory default settings using the access point MODE button: Step 1 Disconnect power (the power jack for external power or the Ethernet cable for in-line power) from the access point. Step 2 Press and hold the MODE button while power to the access point is reconnected. Step 3 Hold the MODE button until the Status LED turns amber (approximately 1 to 2 seconds), and release the button. All access point settings return to factory defaults. 1100 AP1200 AP

11. Rick Graziani graziani@cabrillo.edu11 Reset the AP (Power On) The Reset button on the 340 and 350 AP is in a small hole on the back panel of the base station. To activate the Reset button, insert a straightened paper clip into the small hole and press. Remove the paper clip. The Status LED blinks amber to show the base station has the default parameter values. 350 AP

12. Rick Graziani graziani@cabrillo.edu12 Connecting to the AP (Configuration) WiredWireless: Requires Association

13. Rick Graziani graziani@cabrillo.edu13 Connecting to the AP (Configuration) Console: 9600-8-N-1-None OR Ethernet or Wireless adapter: –Unless routed, be sure it is on the IP addresses are same subnet. ) ) ) ) ) 10.0.0.101/24 10.0.0.1/24 10.0.0.102/24

14. Rick Graziani graziani@cabrillo.edu14 Connecting to the AP (Console) There are two different types of CLI: –IOS CLI –VxMenu ConsoleSerial Rollover Cable VxMenu IOS CLI

15. Rick Graziani graziani@cabrillo.edu15 Connecting to the AP (Telnet) Requires a network connection either Ethernet or Wireless AP Defaults –IP Address = 10.0.0.1/24 –Username and Password = Cisco (“C” not “c”) –This password is the privilege password, not the WEP password. Cisco

16. Rick Graziani graziani@cabrillo.edu16 Connecting to the AP (Browser) WiredWireless: Requires Association Preferred Method!

17. Rick Graziani graziani@cabrillo.edu17 Connecting to the AP (Wireless) Wireless adapter: –If configuring using the wireless adapter, you must first associate with the AP. –Make sure the settings on the ACU match the AP. –Cisco 1100 and 1200 Aps have the following defaults: IP Address = 10.0.0.1 255.255.255.224 SSID = tsunami Password = Cisco (“C” not “c”) SSID = tsunami

18. Rick Graziani graziani@cabrillo.edu18 Connecting to the AP (Wired) Wired Ethernet: –No association necessary –Make sure the IP Address on the Ethernet interface is on the same subnet as the AP. –AP Defaults IP Address = 10.0.0.1 255.255.255.224 Password = Cisco (“C” not “c”) Preferred Method! SSID = tsunami /27

19. Rick Graziani graziani@cabrillo.edu19 Connecting to the AP (Wired) Wired Ethernet: –We will use the browser via wired method to initially configure APs during labs so we do not configure the wrong AP via wireless. VxMenu – Won’t use IOS CLI – Optional, but you can do those labs if you wish. We will cover some of the basic commands. Preferred Method! SSID = tsunami /27

20. Rick Graziani graziani@cabrillo.edu20 Labs and Station Connectivity In the lab we will need to take steps to make sure you are configuring and connected to the AP that you think you are! We will first connect via a wired interface, change the SSID and IP addressing on the AP, different from what the labs show. AP1 AP2 Hey, what happened to my settings on AP2! Configuring AP1 is easy! 10.0.0.1

21. Rick Graziani graziani@cabrillo.edu21 Wired Wireless Configuring IP Addresses

22. Rick Graziani graziani@cabrillo.edu22 Configuring IP Addresses Configuring the IP address on Host’s Ethernet interface Note: /24 will work because the host still believes it is on the same subnet as the AP (and visa versa) 224

23. Rick Graziani graziani@cabrillo.edu23 Access the AP via the Browser Cisco 10.0.0.1 /27

24. Rick Graziani graziani@cabrillo.edu24 Two things to change At the beginning of each lab, after you have connected via the wired Ethernet interface, you will change the IP Address and SSID on the AP, so the other Lab Station does not accidentally configure yours. You will also need to change your Host’s IP address. Ex: 192.168.1.1/24Ex: 192.168.1.2/27 SSID: AP-Pod1 Hostname Not SSID 224

25. Rick Graziani graziani@cabrillo.edu25 Cisco AP Factory Default Settings 255.255.255.224 (/27)

26. Basic Configuration The labs will really help you understand this.

27. Rick Graziani graziani@cabrillo.edu27 Configure IP address and SSID with IPSU IP Setup Utility (IPSU) can only change the IP address and SSID of the access point from their default settings. After the IP address and SSID have been changed, IPSU cannot change them again unless the mode button is held down. Use a computer on the wired LAN to communicate with the AP through a hub on the wired LAN. The IPSU must be installed on the computer as well as on the same subnet as the AP. IPSU uses IP multicast to communicate with the AP We will not use IPSU. See 5.2.1 if you are interested.

28. Rick Graziani graziani@cabrillo.edu28 Navigating the GUI

29. Rick Graziani graziani@cabrillo.edu29 Navigating the GUI By Default, Help is via the Internet.

30. Rick Graziani graziani@cabrillo.edu30 Home Summary Page (IOS) BSSID MAC addresses returned when pinging the AP from wired or wireless client. Rec.Trans. SA/DA/BSSID

31. Rick Graziani graziani@cabrillo.edu31 Express Setup Always configure and test the basics first, before configuring authentication and other options.

32. Rick Graziani graziani@cabrillo.edu32 VxWorks

33. Rick Graziani graziani@cabrillo.edu33 Using the CLI Almost exactly the same as using the Router IOS.

34. Rick Graziani graziani@cabrillo.edu34 The AP’s IP address Same IP address whether you are connecting via the wired or wireless interface. (For configuring the AP.)

35. Rick Graziani graziani@cabrillo.edu35 Association or Click here…

36. Rick Graziani graziani@cabrillo.edu36 Association -> MAC Address

37. Rick Graziani graziani@cabrillo.edu37 Association (VxWorks)

38. Rick Graziani graziani@cabrillo.edu38 ACU - Verifying Right click

39. Rick Graziani graziani@cabrillo.edu39 Show Connection Status

40. Rick Graziani graziani@cabrillo.edu40 Link Test

41. Rick Graziani graziani@cabrillo.edu41 Link Status

42. Rick Graziani graziani@cabrillo.edu42 Network Interfaces Only part of the screen shown.

43. Rick Graziani graziani@cabrillo.edu43 Network Interfaces

44. Rick Graziani graziani@cabrillo.edu44 Network Interfaces – Fast Ethernet Only part of the screen shown.

45. Rick Graziani graziani@cabrillo.edu45 Network Interfaces – Radio-802.11B Only part of the screen shown.

46. Rick Graziani graziani@cabrillo.edu46 Network Interfaces – Radio-802.11B Only part of the screen shown.

47. Rick Graziani graziani@cabrillo.edu47 Network Interfaces – Radio-802.11B Only part of the screen shown.

48. Rick Graziani graziani@cabrillo.edu48 Network Interfaces – Radio-802.11B (Settings)

49. Rick Graziani graziani@cabrillo.edu49 Network Interfaces – Radio-802.11B (Settings)

50. Rick Graziani graziani@cabrillo.edu50 Network Interfaces – Radio-802.11B (Settings)

51. Rick Graziani graziani@cabrillo.edu51 Network Interfaces – Radio-802.11B (Settings) PLCP frame!

52. Rick Graziani graziani@cabrillo.edu52 Network Interfaces – Radio-802.11B (Settings)

53. Rick Graziani graziani@cabrillo.edu53 Network Interfaces – Radio-802.11B (Settings)

54. Rick Graziani graziani@cabrillo.edu54 Network Interfaces – Radio-802.11B (Settings)

55. Rick Graziani graziani@cabrillo.edu55 Network Interfaces – Radio-802.11B (Settings)

56. Rick Graziani graziani@cabrillo.edu56 Network Interfaces – Radio-802.11A (Settings) Only part of the screen shown. 802.11a contains some slightly different options

57. Rick Graziani graziani@cabrillo.edu57

58. Services

59. Rick Graziani graziani@cabrillo.edu59 Services The Services Summary page shows whether all of the main services are currently enabled or disabled.

60. Rick Graziani graziani@cabrillo.edu60 Telnet/SSH

61. Rick Graziani graziani@cabrillo.edu61 Hot Standby We will not be configuring Hot Standby

62. Rick Graziani graziani@cabrillo.edu62 CDP

63. Rick Graziani graziani@cabrillo.edu63 DNS

64. Rick Graziani graziani@cabrillo.edu64 Filters Allows you to accept/deny specific MAC or IP addresses.

65. Rick Graziani graziani@cabrillo.edu65 HTTP This feature enables Web-based GUI management by providing support for HTML Web pages and Common Gateway Interface (CGI) scripts using common Web browsers. The Services>Web Server page is used to enable browsing to the web-based management system, specify the location of the Help files, and enter settings for a custom-tailored web system for management. With the Allow Web-based Configuration Management enabled, access to the GUI management system is permitted. If HTTP is disabled, the management system is accessible only through Telnet or the console

66. Rick Graziani graziani@cabrillo.edu66 HTTP – Help Files Hard Drive - The help files can be copied to the hard drive of the computer which is used to manage the wireless LAN. Go to http://www.cisco.com/public/sw-center/sw-wireless.shtml to download the help files for the particular release. The readme.txt file explains how to download the help files to the hard drive. This URL starting with file:// may not be accessible if the security settings of the browser are not set appropriately. Example: http://www.cisco.com/public/sw-center/sw-wireless.shtml file://[Drive letter]:\[folder or subdirectory]\wireless\help

67. Rick Graziani graziani@cabrillo.edu67 Proxy Mobile IP Allows Layer 3 Roaming More later.

68. Rick Graziani graziani@cabrillo.edu68 QoS – Not Covered QoS is disabled by default. The most important guideline in QoS deployment is to be familiar with the traffic on the wireless LAN. It is important to know the applications used by wireless client devices, the delay sensitivity of the applications, and the amount of traffic associated with the applications. QoS does not create additional bandwidth for the wireless LAN. Rather it helps control the allocation of bandwidth. If there is adequate bandwidth on the WLAN, QoS may not be needed.

69. Rick Graziani graziani@cabrillo.edu69 SNMP – Not covered

70. Rick Graziani graziani@cabrillo.edu70 NTP

71. Wireless Services

72. Ch. 5 – Access Points Cisco Fundamentals of Wireless LANs version 1.1 Rick Graziani Cabrillo College