Ch' 5 Access Points

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
1100 AP
1200 AP

• 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.

10
Reset the AP (Power On)
1100 AP
1200 AP

• 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.

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Reset the AP (Power On)
350 AP

• 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.

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Connecting to the AP (Configuration)
Wired
Wireless Requires Association
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Connecting to the AP (Configuration)
10.0.0.1/24
10.0.0.102/24
) ) ) ) )
10.0.0.101/24

• Console 9600-8-N-1-None
• OR
• Ethernet or Wireless adapter
• Unless routed, be sure it is on the IP addresses
  are same subnet.

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Connecting to the AP (Console)
Console
Serial
Rollover Cable
IOS CLI
VxMenu

• There are two different types of CLI
• IOS CLI
• VxMenu

15
Connecting to the AP (Telnet)
Cisco

• 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.

Requires a network connection either Ethernet or
Wireless
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Connecting to the AP (Browser)
Preferred Method!
Wired
Wireless Requires Association
17
Connecting to the AP (Wireless)
SSID tsunami
SSID tsunami

• 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)

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

• 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)

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

• 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 Wont use
• IOS CLI Optional, but you can do those labs if
  you wish. We will cover some of the basic
  commands.

20
Labs and Station Connectivity
Configuring AP1 is easy!
AP1
Hey, what happened to my settings on AP2!
10.0.0.1
AP2
10.0.0.1

• 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.

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Configuring IP Addresses
Wireless
Wired
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Configuring IP Addresses
224
Configuring the IP address on Hosts Ethernet
interface Note /24 will work because the host
still believes it is on the same subnet as the AP
(and visa versa)
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Access the AP via the Browser
/27
10.0.0.1
Cisco
24
Two things to change
SSID AP-Pod1
Ex 192.168.1.1/24
Ex 192.168.1.2/27
Hostname Not SSID
224

• 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 Hosts IP
  address.

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Cisco AP Factory Default Settings
255.255.255.224 (/27)
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Basic Configuration

• The labs will really help you understand this.

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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.

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Navigating the GUI
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Navigating the GUI

• By Default, Help is via the Internet.

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Home Summary Page (IOS)
MAC addresses returned when pinging the AP from
wired or wireless client.
BSSID
SA/DA/BSSID
Rec.
Trans.
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Express Setup

• Always configure and test the basics first,
  before configuring authentication and other
  options.

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VxWorks
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Using the CLI

• Almost exactly the same as using the Router IOS.

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The APs IP address

• Same IP address whether you are connecting via
  the wired or wireless interface. (For configuring
  the AP.)

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Association
or
Click here
36
Association -gt MAC Address
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Association (VxWorks)
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ACU - Verifying
Right click
39
Show Connection Status
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Link Test
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Link Status
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Network Interfaces
Only part of the screen shown.
43
Network Interfaces
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Network Interfaces Fast Ethernet
Only part of the screen shown.
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Network Interfaces Radio-802.11B
Only part of the screen shown.
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Network Interfaces Radio-802.11B
Only part of the screen shown.
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Network Interfaces Radio-802.11B
Only part of the screen shown.
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Network Interfaces Radio-802.11B (Settings)
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Network Interfaces Radio-802.11B (Settings)
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Network Interfaces Radio-802.11B (Settings)
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Network Interfaces Radio-802.11B (Settings)
PLCP frame!
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Network Interfaces Radio-802.11B (Settings)
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Network Interfaces Radio-802.11B (Settings)
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Network Interfaces Radio-802.11B (Settings)
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Network Interfaces Radio-802.11B (Settings)
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Network Interfaces Radio-802.11A (Settings)
802.11a contains some slightly different options

• Only part of the screen shown.

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(No Transcript)
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Services
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Services

• The Services Summary page shows whether all of
  the main services are currently enabled or
  disabled.

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Telnet/SSH
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Hot Standby

• We will not be configuring Hot Standby

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CDP
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DNS
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Filters

• Allows you to accept/deny specific MAC or IP
  addresses.

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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 ServicesgtWeb 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

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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.co
  m/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

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Proxy Mobile IP

• Allows Layer 3 Roaming
• More later.

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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.

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SNMP Not covered
70
NTP
71
Wireless Services
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Ch. 5 Access Points

• Cisco Fundamentals of Wireless LANs version 1.1
• Rick Graziani
• Cabrillo College