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Ch. 5 – Access Points. Cisco Fundamentals of Wireless LANs version 1.1 Rick Graziani Cabrillo College. Overview. Access Point Connection. Introduction. Radio Upgrade. 802.11g chip now shipping. Cable and Power. Cisco Aironet 1100 and 1200 Series, can be powered over Ethernet with:

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ch 5 access points

Ch. 5 – Access Points

Cisco Fundamentals of Wireless LANs version 1.1

Rick Graziani

Cabrillo College

overview
Overview

Rick Graziani graziani@cabrillo.edu

introduction
Introduction

Rick Graziani graziani@cabrillo.edu

radio upgrade
Radio Upgrade

802.11g chip now shipping

Rick Graziani graziani@cabrillo.edu

cable and power
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)

Rick Graziani graziani@cabrillo.edu

cable and power1
Cable and Power
  • WARNING Never connect both the DC power to the AP power port and inline power simultaneously

Rick Graziani graziani@cabrillo.edu

led indicators
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

Rick Graziani graziani@cabrillo.edu

reset the ap power on
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

Rick Graziani graziani@cabrillo.edu

reset the ap power on1
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

Rick Graziani graziani@cabrillo.edu

connecting to the ap configuration
Connecting to the AP (Configuration)

Wired

Wireless: Requires Association

Rick Graziani graziani@cabrillo.edu

connecting to the ap configuration1
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

Rick Graziani graziani@cabrillo.edu

connecting to the ap console
Connecting to the AP (Console)
  • There are two different types of CLI:
    • IOS CLI
    • VxMenu

Serial

Console

Rollover Cable

IOS CLI

VxMenu

Rick Graziani graziani@cabrillo.edu

connecting to the ap telnet
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

Rick Graziani graziani@cabrillo.edu

connecting to the ap browser
Connecting to the AP (Browser)

Preferred Method!

Wired

Wireless: Requires Association

Rick Graziani graziani@cabrillo.edu

connecting to the ap wireless
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

Rick Graziani graziani@cabrillo.edu

connecting to the ap wired
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”)

SSID = tsunami

SSID = tsunami

/27

Preferred Method!

Rick Graziani graziani@cabrillo.edu

connecting to the ap wired1
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!

Rick Graziani graziani@cabrillo.edu

labs and station connectivity
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

configuring ip addresses
Configuring IP Addresses

Wireless

Wired

Rick Graziani graziani@cabrillo.edu

configuring ip addresses1
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

access the ap via the browser
Access the AP via the Browser

/27

10.0.0.1

Cisco

Rick Graziani graziani@cabrillo.edu

two things to change
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

cisco ap factory default settings
Cisco AP Factory Default Settings

255.255.255.224 (/27)

Rick Graziani graziani@cabrillo.edu

basic configuration

Basic Configuration

The labs will really help you understand this.

configure ip address and ssid with ipsu
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

navigating the gui
Navigating the GUI

Rick Graziani graziani@cabrillo.edu

navigating the gui1
Navigating the GUI
  • By Default, Help is via the Internet.

Rick Graziani graziani@cabrillo.edu

home summary page ios
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

express setup
Express Setup
  • Always configure and test the basics first, before configuring authentication and other options.

Rick Graziani graziani@cabrillo.edu

vxworks
VxWorks

Rick Graziani graziani@cabrillo.edu

using the cli
Using the CLI
  • Almost exactly the same as using the Router IOS.

Rick Graziani graziani@cabrillo.edu

the ap s ip address
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

association
Association

or

Click here…

Rick Graziani graziani@cabrillo.edu

association mac address
Association -> MAC Address

Rick Graziani graziani@cabrillo.edu

association vxworks
Association (VxWorks)

Rick Graziani graziani@cabrillo.edu

acu verifying
ACU - Verifying

Right click

Rick Graziani graziani@cabrillo.edu

show connection status
Show Connection Status

Rick Graziani graziani@cabrillo.edu

link test
Link Test

Rick Graziani graziani@cabrillo.edu

link status
Link Status

Rick Graziani graziani@cabrillo.edu

network interfaces
Network Interfaces

Only part of the screen shown.

Rick Graziani graziani@cabrillo.edu

network interfaces1
Network Interfaces

Rick Graziani graziani@cabrillo.edu

slide44

Network Interfaces – Fast Ethernet

Only part of the screen shown.

Rick Graziani graziani@cabrillo.edu

network interfaces radio 802 11b
Network Interfaces – Radio-802.11B

Only part of the screen shown.

Rick Graziani graziani@cabrillo.edu

network interfaces radio 802 11b1
Network Interfaces – Radio-802.11B

Only part of the screen shown.

Rick Graziani graziani@cabrillo.edu

network interfaces radio 802 11b2
Network Interfaces – Radio-802.11B

Only part of the screen shown.

Rick Graziani graziani@cabrillo.edu

network interfaces radio 802 11b settings
Network Interfaces – Radio-802.11B (Settings)

Rick Graziani graziani@cabrillo.edu

network interfaces radio 802 11b settings1
Network Interfaces – Radio-802.11B (Settings)

Rick Graziani graziani@cabrillo.edu

network interfaces radio 802 11b settings2
Network Interfaces – Radio-802.11B (Settings)

Rick Graziani graziani@cabrillo.edu

network interfaces radio 802 11b settings3
Network Interfaces – Radio-802.11B (Settings)

PLCP frame!

Rick Graziani graziani@cabrillo.edu

network interfaces radio 802 11b settings4
Network Interfaces – Radio-802.11B (Settings)

Rick Graziani graziani@cabrillo.edu

network interfaces radio 802 11b settings5
Network Interfaces – Radio-802.11B (Settings)

Rick Graziani graziani@cabrillo.edu

network interfaces radio 802 11b settings6
Network Interfaces – Radio-802.11B (Settings)

Rick Graziani graziani@cabrillo.edu

network interfaces radio 802 11b settings7
Network Interfaces – Radio-802.11B (Settings)

Rick Graziani graziani@cabrillo.edu

network interfaces radio 802 11a settings
Network Interfaces – Radio-802.11A (Settings)

Only part of the screen shown.

802.11a contains some slightly different options

Rick Graziani graziani@cabrillo.edu

services1
Services
  • The Services Summary page shows whether all of the main services are currently enabled or disabled.

Rick Graziani graziani@cabrillo.edu

telnet ssh
Telnet/SSH

Rick Graziani graziani@cabrillo.edu

hot standby
Hot Standby
  • We will not be configuring Hot Standby

Rick Graziani graziani@cabrillo.edu

slide62
CDP

Rick Graziani graziani@cabrillo.edu

slide63
DNS

Rick Graziani graziani@cabrillo.edu

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

Rick Graziani graziani@cabrillo.edu

slide65
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

Rick Graziani graziani@cabrillo.edu

http help files
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:
  • file://[Drive letter]:\[folder or subdirectory]\wireless\help

Rick Graziani graziani@cabrillo.edu

proxy mobile ip
Proxy Mobile IP
  • Allows Layer 3 Roaming
  • More later.

Rick Graziani graziani@cabrillo.edu

qos not covered
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.

Rick Graziani graziani@cabrillo.edu

snmp not covered
SNMP – Not covered

Rick Graziani graziani@cabrillo.edu

slide70
NTP

Rick Graziani graziani@cabrillo.edu

ch 5 access points1

Ch. 5 – Access Points

Cisco Fundamentals of Wireless LANs version 1.1

Rick Graziani

Cabrillo College