ch. 5 – access points - leamanleaman.org/wireless/mod05.pdf · ch. 5 – access points cisco...
TRANSCRIPT
Ch. 5 – Access Points
Cisco Fundamentals of Wireless LANs version 1.1Cisco Fundamentals of Wireless LANs version 1.1
Rick Graziani
Cabrillo College
Overview
Rick Graziani [email protected] 2
Access Point Connection
Introduction
Rick Graziani [email protected] 4
Cable and Power
Rick Graziani [email protected] 6
• 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)
Cable and Power
Rick Graziani [email protected] 7
• WARNING Never connect both the DC power to the AP
power port and inline power simultaneously
AP Installation
LED indicators
1100 AP 1200 AP
Rick Graziani [email protected] 9
• 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.
Reset the AP (Power On)
• When beginning a lab, to make sure the AP has the default settings,
1100 AP 1200 AP
Rick Graziani [email protected] 10
• 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.
Reset the AP (Power On)
350 AP
Rick Graziani [email protected] 11
• 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.
Connecting to the AP (Configuration)
Rick Graziani [email protected] 12
Wired Wireless: Requires Association
Connecting to the AP (Configuration)
) ) ) ) )
10.0.0.101/24
10.0.0.1/2410.0.0.102/24
Rick Graziani [email protected] 13
• Console: 9600-8-N-1-None
OR
• Ethernet or Wireless adapter:
– Unless routed, be sure it is on the IP addresses are same subnet.
Connecting to the AP (Console)
ConsoleSerial
Rollover Cable
IOS CLI
Rick Graziani [email protected] 14
• There are two different types of CLI:
– IOS CLI
– VxMenu
VxMenuIOS CLI
Connecting to the AP
(Telnet)
Cisco
Rick Graziani [email protected] 15
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.
Connecting to the AP (Browser)
Wired Wireless: Requires AssociationPreferred Method!
Rick Graziani [email protected] 16
Connecting to the AP (Wireless)
SSID = tsunamiSSID = tsunami
Rick Graziani [email protected] 17
• 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”)
Connecting to the AP (Wired)
Preferred Method!
SSID = tsunamiSSID = tsunami
/27
Rick Graziani [email protected] 18
• 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!
Connecting to the AP (Wired)
Preferred Method!
SSID = tsunamiSSID = tsunami
/27
Rick Graziani [email protected] 19
• 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
• IOS CLI
Preferred Method!
Labs and Station Connectivity
AP1Hey, what
happened to my settings on AP2!
Configuring AP1 is easy!
10.0.0.1
Rick Graziani [email protected] 20
• 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.
AP2
10.0.0.1
Configuring IP Addresses
224
Rick Graziani [email protected] 22
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)
Two things to change
Ex: 192.168.1.1/24 Ex: 192.168.1.2/27SSID: AP-Pod1
Hostname Not SSID
224
Rick Graziani [email protected] 24
• At the beginning of each lab, after you have connected via the wired Ethernetinterface, 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.
Basic Configuration
The labs will really help you understand this.The labs will really help you understand this.
Configure IP address and SSID with IPSU
Rick Graziani [email protected] 27
• 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.
Navigating the GUI
Rick Graziani [email protected] 28
Home Summary Page (IOS)
MAC addresses returned when pinging the AP from wired or wireless client.
Rick Graziani [email protected] 30
BSSID
Rec. Trans. SA/DA/BSSID
Express Setup
• Always configure
Rick Graziani [email protected] 31
• Always configure
and test the
basics first, before
configuring
authentication and
other options.
VxWorks
Rick Graziani [email protected] 32
The AP’s IP address
Rick Graziani [email protected] 34
• Same IP address whether you are connecting via the wired
or wireless interface. (For configuring the AP.)
Association -> MAC Address
Rick Graziani [email protected] 36
Association (VxWorks)
Rick Graziani [email protected] 37
Show Connection Status
Rick Graziani [email protected] 39
Link Test
Rick Graziani [email protected] 40
Link Status
Rick Graziani [email protected] 41
Network Interfaces
Rick Graziani [email protected] 43
Network Interfaces – Fast Ethernet
Rick Graziani [email protected] 44Only part of the screen shown.
Network Interfaces – Radio-802.11B
Rick Graziani [email protected] 45
Only part of the screen shown.
Network Interfaces – Radio-802.11B
Rick Graziani [email protected] 46
Only part of the screen shown.
Network Interfaces – Radio-802.11B
Rick Graziani [email protected] 47
Only part of the screen shown.
Network Interfaces – Radio-802.11B (Settings)
Rick Graziani [email protected] 48
Network Interfaces – Radio-802.11B (Settings)
Rick Graziani [email protected] 49
Network Interfaces – Radio-802.11B (Settings)
Rick Graziani [email protected] 50
Network Interfaces – Radio-802.11B (Settings)
Rick Graziani [email protected] 52
Network Interfaces – Radio-802.11B (Settings)
Rick Graziani [email protected] 53
Network Interfaces –Radio-802.11B (Settings)
Rick Graziani [email protected] 54
Network Interfaces –Radio-802.11B (Settings)
Rick Graziani [email protected] 55
Network Interfaces – Radio-802.11A (Settings)
802.11a contains some slightly different options
Rick Graziani [email protected] 56Only part of the screen shown.
Rick Graziani [email protected] 57
Services
Services
Rick Graziani [email protected] 59
• The Services Summary page shows whether all of the main services are currently enabled or disabled.
Telnet/SSH
Rick Graziani [email protected] 60
CDP
Rick Graziani [email protected] 62
DNS
Rick Graziani [email protected] 63
Filters
Rick Graziani [email protected] 64
• Allows you to accept/deny specific MAC or IP addresses.
HTTP
Rick Graziani [email protected] 65
• 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
HTTP – Help Files
Rick Graziani [email protected] 66
• 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:
• file://[Drive letter]:\[folder or subdirectory]\wireless\help
QoS – Not Covered
Rick Graziani [email protected] 68
• 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.
SNMP – Not covered
Rick Graziani [email protected] 69
NTP
Rick Graziani [email protected] 70
Wireless Services
Ch. 5 – Access Points
Cisco Fundamentals of Wireless LANs version 1.1Cisco Fundamentals of Wireless LANs version 1.1
Rick Graziani
Cabrillo College