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Ch. 5 – Access Points

Ch. 5 – Access Points

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Ch. 5 – Access Points

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

  2. Overview

  3. Access Point Connection

  4. Introduction

  5. Radio Upgrade 802.11g chip now shipping

  6. 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. Cable and Power • WARNING Never connect both the DC power to the AP power port and inline power simultaneously

  8. AP Installation

  9. 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 AP 1200 AP

  10. 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 AP 1200 AP

  11. 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. Connecting to the AP (Configuration) Wired Wireless: Requires Association

  13. 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. 10.0.0.1/24 10.0.0.102/24 ) )) )) 10.0.0.101/24

  14. Connecting to the AP (Console) • There are two different types of CLI: • IOS CLI • VxMenu Serial Console Rollover Cable IOS CLI VxMenu

  15. Connecting to the AP (Telnet) • 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 Requires a network connection either Ethernet or Wireless

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

  17. Connecting to the AP (IOS, from previous slide)

  18. Connecting to the AP(VxWorks, from previous slide)

  19. 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 SSID = tsunami

  20. Connecting to the AP (Wired) SSID = tsunami SSID = tsunami /27 Preferred Method!

  21. 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. SSID = tsunami SSID = tsunami /27 Preferred Method!

  22. Labs and Station Connectivity Configuring AP1 is easy! • 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 Hey, what happened to my settings on AP2! 10.0.0.1 AP2 10.0.0.1 Rick Graziani graziani@cabrillo.edu

  23. Configuring IP Addresses Wireless Wired Rick Graziani graziani@cabrillo.edu

  24. Configuring IP Addresses 224 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) Rick Graziani graziani@cabrillo.edu

  25. Access the AP via the Browser /27 10.0.0.1 Cisco Rick Graziani graziani@cabrillo.edu

  26. Two things to change SSID: AP-Pod1 Ex: 192.168.1.1/24 Ex: 192.168.1.2/27 • 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. Hostname Not SSID 224 Rick Graziani graziani@cabrillo.edu

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

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

  29. 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. Rick Graziani graziani@cabrillo.edu

  30. Navigating the GUI Rick Graziani graziani@cabrillo.edu

  31. Navigating the GUI • By Default, Help is via the Internet. Rick Graziani graziani@cabrillo.edu

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

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

  34. VxWorks Rick Graziani graziani@cabrillo.edu

  35. Using the CLI • Almost exactly the same as using the Router IOS. Rick Graziani graziani@cabrillo.edu

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

  37. Association or Click here… Rick Graziani graziani@cabrillo.edu

  38. Association -> MAC Address Rick Graziani graziani@cabrillo.edu

  39. Association (VxWorks) Rick Graziani graziani@cabrillo.edu

  40. ACU - Verifying Right click Rick Graziani graziani@cabrillo.edu

  41. Show Connection Status Rick Graziani graziani@cabrillo.edu

  42. Link Test Rick Graziani graziani@cabrillo.edu

  43. Link Status Rick Graziani graziani@cabrillo.edu

  44. Network Interfaces Only part of the screen shown. Rick Graziani graziani@cabrillo.edu

  45. Network Interfaces Rick Graziani graziani@cabrillo.edu

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

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

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

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

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