Troubleshooting 1250 Series Auto

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C H A P T E R

3

Troubleshooting 1250 Series Autonomous

Access Points

This chapter provides troubleshooting procedures for basic problems with the 1250 series autonomous access point (model: AIR-AP1252). For the most up-to-date, detailed troubleshooting information, refer to the Cisco Technical Support and Documentation website at the following URL: http://www.cisco.com/cisco/web/psa/default.html

Sections in this chapter include:

Checking the Autonomous Access Point LEDs, page 3-2

Checking Basic Settings, page 3-5

Low Power Condition on Autonomous Access Points, page 3-7

Running the Carrier Busy Test, page 3-16

Running the Ping Test, page 3-17

Resetting to the Default Configuration, page 3-18

Reloading the Access Point Image, page 3-19

Obtaining the Access Point Image File, page 3-22

Obtaining the TFTP Server Software, page 3-24

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Checking the Autonomous Access Point LEDs

Checking the Autonomous Access Point LEDs

If your access point is not working properly, check the Status, Ethernet, and Radio LEDs on the top of the unit. You can use the LED indications to quickly assess the unit’s status.

Figure 3-1 shows the access

point LEDs (for additional information refer to the Event Log using the access point browser interface).

Figure 3-1 Access Point LEDs

ETHERNET STATUS RADIO

ETHERNET STATUS RADIO

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The LED signals are listed in

Table 3-1

.

Checking the Autonomous Access Point LEDs

Note

Regarding LED status colors, it is expected that there will be small variations in color intensity and hue from unit to unit. This is within the normal range of the LED manufacturer’s specifications and is not a defect.

Table 3-1 Autonomous Access Point LED Signals

Message type

Boot loader status

Association status

Operating status

Ethernet LED

Green

Green

Off

Off

Off

Amber

Green

Radio LED

Amber

Green

Red

Status LED

Off

Green

Off

Meaning

DRAM test in progress.

DRAM memory test ok.

Board initialization in progress.

Blinking green Blinking green Initialize Flash file system.

Green Green Flash memory test ok.

Off

Off

White Initialize Ethernet.

Blinking blue Ethernet test ok.

Green

Off

Green

Off

Blinking green Starting Cisco IOS.

Off Initialization ok.

Green

Blue

Normal operating condition, but no wireless client devices are associated with the unit.

Normal operating condition, at least one wireless client device is associated with the unit.

Green —

Blinking green —

Ethernet link is operational.

Transmitting or receiving Ethernet packets.

Blinking green —

— Blinking blue

Transmitting or receiving radio packets.

Software upgrade in progress.

Blinking green Blinking green Blinking green Access point location command.

Boot loader warnings Off Off Blinking red Ethernet link not operational.

Red

Amber

Off

Off

Red Ethernet failure.

Blinking blue Configuration recovery in progress

(Mode button pressed for 2 to 3 seconds).

Off

Blinking green

Red

Blinking red

Red Image recovery

(Mode button pressed for 20 to 30 seconds).

Blinking pink Image recovery in progress and Mode button is released.

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Checking the Power Injector LEDs

Table 3-1

Cisco IOS errors

Autonomous Access Point LED Signals (continued)

Message type

Boot loader errors

Ethernet LED

Red

Off

Off

Amber

Red

Amber

Red

Amber Amber

Blinking amber —

Blinking red and off

Blinking amber —

Red

Radio LED

Red

Red

Amber

Off

Off

Amber

Amber

Red

Status LED

Red

Blinking red and blue

Meaning

DRAM memory test failure.

Flash file system failure.

Alternating red and green

Environment variable (ENVAR) failure.

Rapid blinking red

Bad MAC address.

Blinking red and off

Ethernet failure during image recovery.

Boot environment error.

Blinking red and off

Blinking red and off

No Cisco IOS image file.

Off

Cycle through blue, green, red, and off

Boot failure.

Transmit or receive Ethernet errors.

Maximum retries or buffer full occurred on the radio.

Software failure; try disconnecting and reconnecting unit power.

General warning, insufficient inline power (see the

“Low Power Condition on Autonomous

Access Points” section).

Checking the Power Injector LEDs

The power injector (model:AIR-PWRINJ4) has three LEDs on the top end of the case (see Figure 3-2

).

Figure 3-2 Power Injector LEDs

AP POWER FAULT AC POWER

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Checking Basic Settings

Table 3-2

lists the power injector LED indications.

Table 3-2 Power Injector LED Indications

LED

AP Power

Fault

AC Power

Color

Green

Red

Green

Description

Indicates DC power is available to the access point.

Indicates a short or overload condition. Check Ethernet cables and connections before contacting your support organization for assistance.

Indicates AC power is available at the power injector.

Checking Basic Settings

Mismatched basic settings are the most common causes of lost connectivity with wireless clients. If the access point does not communicate with client devices, check the following areas.

Default IP Address Behavior

When you connect a 1250 series access point running Cisco IOS Release 12.4(10b)JA or later software with a default configuration to your LAN, the access point requests an IP address from your DHCP server and, if it does not receive an IP address, continues to send requests indefinitely.

Enabling the Radio Interfaces

In Cisco IOS Release 12.4(10b)JA or later, the access point radios are disabled by default, and there is no default SSID. You must create an SSID and enable the radios before the access point will allow wireless associations from other devices. These changes to the default configuration improve the security of newly installed access points. Refer to the Cisco IOS Software Configuration Guide for Cisco

Aironet Access Points for instructions on configuring the SSID.

To enable the radio interfaces, follow these instructions:

Step 1

Step 2

Step 3

Use your web-browser to access your access point.

At the prompt, enter the administrator username and password. The default username is Cisco and the default password is Cisco. The username and password are case sensitive.

When the Summary Status page displays, click

Network Interfaces > Radio0-802.11N

2.4GHZ

and the radio status page displays

Note

The module slot (slot 0 or slot 1) where the radio module is located defines the Radio0 or Radio1 designation. See Figure 1-1 on page 1-3 for the location of the module slots.

Step 4

Step 5

Step 6

Step 7

Click Settings and the radio settings page displays.

Click Enable in the Enable Radio field.

Click Apply.

Click Radio1-802.11N

5GHZ

and the radio status page displays.

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Checking Basic Settings

Step 8

Step 9

Repeat Steps 3 to 5.

Close your web-browser.

SSID

Wireless clients attempting to associate with the access point must use the same SSID as the access point.

If a client device’s SSID does not match the SSID of an access point in radio range, the client device will not associate.

Note

In Cisco IOS Release 12.4(10b)JA and later, there is no default SSID. You must configure an SSID before client devices can associate to the access point.

Refer to the Cisco IOS Software Configuration Guide for Cisco Aironet Access Points for instructions on setting the access point’s SSID.

WEP Keys

The WEP key you use to transmit data must be set up exactly the same on your access point and any wireless devices with which it associates. For example, if you set WEP Key 3 on your client adapter to

0987654321 and select it as the transmit key, you must also set WEP Key 3 on the access point to exactly the same value. The access point does not need to use Key 3 as its transmit key, however.

Refer to the Cisco IOS Software Configuration Guide for Cisco Aironet Access Points for instructions on setting the access point’s WEP keys.

Security Settings

Wireless clients attempting to authenticate with your access point must support the same security options configured in the access point, such as EAP or LEAP, MAC address authentication, Message Integrity

Check (MIC), WEP key hashing, and 802.1X protocol versions.

If a wireless client is unable to authenticate with your access point, contact the system administrator for proper security settings in the client adapter and for the client adapter driver and firmware versions that are compatible with the access point settings.

Note

The requirements for 802.11n radios are no encryption or AES-CCM.

Note

Your client utility should display the access point MAC address for the access point radio. The MAC address for the access point Ethernet port is printed on the label on the back of the access point.

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Low Power Condition on Autonomous Access Points

Low Power Condition on Autonomous Access Points

The access point with two radio modules can be powered from the 1250 DC power module or from the

1250 in-line power injector. The access point supports the Cisco Intelligent Power Management.

With only one radio module installed, the access point (powered device) can be powered by an 802.3af power source. It requires 15.4 W with 100 m of CAT 5E (or higher) Ethernet cable. When the access point is being used in a PoE configuration, the power drawn from the power sourcing equipment (PSE), such as a power injector, is higher by an amount dependent on the length of the interconnecting cable.

For full dual radio module operation, the access point requires 18.5 W with 100 m CAT 5E (or higher)

Ethernet cable.

Caution

Current switches, power patch pannels, and IEEE 802.3af compliant power sources are not able to provide sufficient power to the access point with both radio modules installed.

Note

If your access point is connected to in-line power, do not connect the power module to the access point.

Using two power sources on the access point might cause the access point to shut down to protect internal components and might cause the switch to shut down the port to which the access point is connected. If your access point shuts down, you must remove all power and reconnect only a single power source.

On power up, the access point is placed into low power mode (both radios are disabled), Cisco IOS software loads and runs, and power negotiation determines if sufficient power is available. If there is sufficient power then the radios are turned on; otherwise, the access point remains in low power mode with the radios disabled to prevent a possible over-current condition. In low power mode, the access point activates the Status LED low power error indication, displays a low power message on the browser and serial interfaces, and creates an event log entry (see the

“Checking the Autonomous Access Point

LEDs” section on page 3-2 and

“Inline Power Status Messages” section on page 3-8 ).

Intelligent Power Management

To help avoid an over-current condition with low power sources and to optimize power usage on Cisco switches, Cisco developed Intelligent Power Management, which uses Cisco Discovery Protocol (CDP) to allow powered devices (such as your access point) to negotiate with a Cisco switch for sufficient power.

The access point supports Intelligent Power Management and as a result of the power negotiations, the access point will either enter full power mode or remain in low power mode with the radios disabled.

Note

Independent of the power negotiations, the access point hardware also uses the 802.3af classification scheme to indicate the power required from the power source. However, the power source cannot report the power available to the access point unless the power source also supports Intelligent Power

Management.

Some Cisco switches might require a software upgrade to support Intelligent Power Management. If the software upgrade is not desired, you can configure the access point to operate in pre-standard compatibility mode and the access point automatically enters full power mode (with a single radio module installed) if these Cisco switches are detected in the received CDP ID field.

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Low Power Condition on Autonomous Access Points

When the access point determines that sufficient power is not available for full power operation, an error

message is logged and the Status LED turns amber to indicate low power mode (see the “Checking the

Autonomous Access Point LEDs” section on page 3-2

and the

“Inline Power Status Messages” section on page 3-8

).

Tip

If your switch is capable of supplying sufficient power for full operation (with a single radio module installed) but the access point remains in low-power mode, your access point or your switch (or both) might be misconfigured (see

Table 3-3 and

Table 3-5 ).

For full power operation with both radio modules installed, the access point can only be powered by these options:

Use the 1250 series power injector (AIR-PWRINJ4) on the switch port

Use the 1250 series DC power module (AIR-PWR-SPLY1) to locally power the access point

For full power operation with only one radio module installed, the access point can be powered by these options:

Use the 1250 series power injector (AIR-PWRINJ4) on the switch port

Use the 1250 series DC power module (AIR-PWR-SPLY1) to locally power the access point

Use an 802.3af power source

Inline Power Status Messages

These messages are logged on the console port by the access point to report the power condition:

%CDP_PD-4-POWER_OK: Full Power - AC_ADAPTOR inline power source—This message indicates the access point is using the 1250 power module and can support full-power operation with both radio modules.

%CDP_PD-4-POWER_OK: Low Power - AC_ADAPTOR inline power source—This message indicates the access point is using a non-1250 power module and cannot support full-power operation.

%CDP_PD-4-POWER_OK: Full Power - NEGOTIATED inline power source—This message indicates the access point (with a single radio module installed) is operating at full power and has successfully negotiated for 15.4 W of power from a Cisco switch supporting Cisco Intelligent Power

Management.

%CDP_PD-4-POWER_OK: Full Power - HIGH_POWER_CLASSIC inline power source—This message indicates the access point (with a single radio module installed) is operating at full power because it has been configured for pre-standard compatibility mode and has detected a Cisco switch that does not support Intelligent Power Management but is able to supply sufficient power to the access point.

%CDP_PD-4-POWER_OK: Full Power - INJECTOR_CONFIGURED_ON_SOURCE inline power source—This message indicates the access point is operating at full power because it is connected to a Cisco switch that supports Intelligent Power Management and the switch has been configured with the power inline never command.

%CDP_PD-4-POWER_OK: Full power - INJECTOR_CONFIGURED_ON_CURRENT_PORT inline power source—This message indicates the access point is operating at full power because it has been configured to expect a power injector on this port.

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%CDP_PD-4-POWER_OK: Full Power - INJECTOR_DETECTED_PD inline power source—This message indicates the access point is operating at full power because it has detected a CDP packet from another Cisco powerable device (PD). The access point power is being supplied from a power injector or a non-Cisco power source because a Cisco power source does not transmit this type of

CDP packet.

%CDP_PD-4-POWER_OK: Full Power - INJECTOR_DETECTED_MULTIPLE_MACS_ON_

HUB inline power source—This message indicates the access point is operating at full power because it has detected multiple Cisco devices. The access point power is being supplied from a power injector or a non-Cisco power source because a Cisco power source does not forward CDP packets.

%CDP_PD-4-POWER_OK: Full Power - NON_CISCO-NO_CDP_RECEIVED inline power source—This message indicates the access point is operating at full power because it has not received any CDP packets within the timeout period. This condition indicates your access point is connected to a non-Cisco power source.

%CDP_PD-4-POWER_OK: Full power - INJECTOR_DETECTED inline power source—This message indicates that the access point has detected the 1250 series power injector (AIR-PWINJ4) and is operating at full power with both radios enabled. The power inline negotation injector

installed command does not have to be used to specify that the power injector is installed.

Note

To prevent possible over-current conditions, the power source must be an IEC60950 compliant limited power source.

%CDP_PD-4-POWER_OK: Full power - INJECTOR_CONFIGURED_OVERRIDE_SAFETY inline power source —This message indicates the access point has been configured to override the inline power checks and a power injector is installed.

Caution

When using the power inline negotiation injector override command, a power injector must always be installed to prevent a possible overload condition with an underpowered power source.

%CDP_PD-2-POWER_LOW: All radios disabled - NEGOTIATED inline power source—This message indicates the access point is in low power mode with all radios disabled because the Cisco power source has indicated it is not capable of supplying sufficient power to the access point.

Note

A Cisco 1250 power injector might be required.

%CDP_PD-2-POWER_LOW: All radios disabled - LOW_POWER_CLASSIC_NO_INJECTOR

_CONFIGURED <platform name> (<MAC address>). —This message indicates the access point is in low power mode with all radios disabled and has detected a CDP device that is unable to supply sufficient power to the access point.

The< platform name> indicates the CDP device detected by the access point. The <MAC address> indicates the MAC address of the CDP device, typically, the switch port.

Note

A Cisco power injector might be required.

Following the low power status message, two extra messages are displayed on the console port or when using a Telnet session that identify the actions needed to resolve this low power problem:

Verify the required power injector is installed on this port: <platform name> (<Ethernet port>).

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(where <platform name> indicates the CDP device detected by the access point and

<Ethernet port> indicates the Ethernet port of the CDP device.

If a power injector is installed, issue the command: power inline negotiation injector installed.

%CDP_PD-2-POWER_LOW: All radios disabled- LOW_POWER_CLASSIC_INJECTOR_

CONFIGURED_ON_ANOTHER_PORT <platform name> (<MAC address>)—This message indicates the access point is in low power mode with all radios disabled and has detected a CDP device that is unable to supply sufficient power to the access point. A power injector has been configured, but it is for another port. It is likely that the access point has been relocated and has not been reconfigured for a new power injector.

The <platform name> indicates the CDP device detected by the access point. The <MAC address> indicates the MAC address of the CDP device, typically, the switch port.

Note

A Cisco 1250 power injector might be required.

Following the low power status message, two extra messages are displayed when using the console port or a Telnet session that identify the actions needed to resolve this low power problem:

1.

Verify the required power injector is installed on the new port: <platform name> (<Ethernet

port>).

(where <platform name> indicates the CDP device detected by the access point and

<Ethernet port> indicates the Ethernet port of the CDP device.

2.

If a power injector is installed, issue the command: power inline negotiation injector installed.

%CDP_PD-2-POWER_LOW: All radios disabled- HIGH_POWER_CLASSIC_NOT_

CONFIGURED inline power source <platform name> (<MAC address>)—This message indicates the access point is in low power mode with all radios disabled and has detected a Cisco switch that does not support Intelligent Power Management, but should be able to supply sufficient power. The access point must be configured for pre-standard compatibility.

The< platform name> indicates the Cisco platform detected by the access point. The <MAC

address> indicates the MAC address of the switch port.

Note

You need to upgrade the software on the Cisco switch to support Intelligent Power

Management or configure the access point for pre-standard compatibility.

%CDP_PD-2-POWER_LOW: All radios disabled-INJECTOR_CONFIGURED_BUT_FAILS_

VERIFICATION <platform name> (<MAC address>)—This message indicates the access point is in low power mode with all radios disabled and a power injector has been configured but has not been detected by the access point.

The< platform name> indicates the Cisco platform detected by the access point. The <MAC

address> indicates the MAC address of the switch port.

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Configuring Power Using the CLI

Intelligent Power Management support is dependent on the version of software resident in the Cisco switch that is providing power to the access point. Each Cisco switch should be upgraded to support

Intelligent Power Management. Until the software is upgraded, you can configure the access point to operate with older switch software using the following Cisco IOS CLI command:

[no] power inline negotiation {prestandard source |injector {installed | override | H.H.H}}

Where:

prestandard source indicates the Cisco switch does not support Intelligent Power Management.

injector installed indicates a power injector is installed on the current switch port.

Note

The power inline negotiation injector installed command is not required, because the access point can detect the 1250 power injector (AIR-PWRINGJ4).

injector override indicates a power injector is installed and the access point is configured to override the inline power checks. When you move the access point, H.H.H is used to specify the

MAC address of the new switch port where the access point was moved. A MAC address of 0.0.0 is invalid.

Caution

When you are using the power inline negotiation injector override command, a power injector must always be installed to prevent a possible overload condition with an underpowered power source.

Note

The power inline negotiation injector installed command will fail if CDP is disabled.

When using the power inline negotiation injector override command, you must use a power injector to prevent possibly overloading underpowered power sources.

You can use this Cisco IOS CLI command to inform the access point of the following:

The Cisco switch does not support Intelligent Power Management but should be able to supply sufficient power for the access point with one radio module installed.

A 1250 power injector is being used to supply sufficient power and the Cisco switch does not support

Intelligent Power Management.

The access point was moved to a new Cisco switch port and a 1250 power injector is being used to supply sufficient power.

Caution

If the access point receives power through PoE, the output current of the power sourcing equipment

(PSE) cannot exceed 400 mA per port.

Note

After completing your configuration changes, you must remove the serial console cable from the access point.

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Table 3-3 Using Cisco IOS Commands for Access Points with One Radio Module Installed

Power Source

AC power module

Cisco switch that supports Intelligent Power

Management

1

Access Point

None required

Cisco IOS Commands no power inline negotiation prestandard source

Cisco Switch power inline never power inline auto

Cisco switch that does not support Intelligent

Power Management

1

power inline negotiation prestandard source power inline auto

Power injector

2

used with a Cisco switch that supports Intelligent Power Management

1

Power injector

2 used with a Cisco switch that does not support Intelligent Power Management

1

None required

3

None required

5

Power injector used with a non-Cisco switch None required

power inline never power inline never

4

1.

You should check the release notes for your Cisco power source to determine which Cisco IOS release supports Intelligent Power Management. Support for Intelligent Power Management might not be currently available for your Cisco power source.

2.

Power injector must be AIR-PWRINJ4.

3.

The Cisco switch uses Intelligent Power Management to inform the access point of the power injector being used.

4.

Cisco switches that support Intelligent Power Management always configure the use of a power injector at the switch.

5.

The access point detects the power injector (AIR-PWRINJ4).

Table 3-4 Using Cisco IOS Commands for Access Points with Two Radio Modules Installed

Cisco IOS Commands

Power Source

AC power module

Power injector

1

used with a Cisco switch that supports Intelligent Power Management

2

Power injector

2 used with a Cisco switch that does not support Intelligent Power Management

1

Power injector

2

used with a non-Cisco switch

Access Point

None required

None required

3

None required

5

None required

5

Cisco Switch power inline never power inline never

4

power inline never

1.

Power injector must be AIR-PWRINJ4.

2.

You should check the release notes for your Cisco power source to determine which Cisco IOS release supports Intelligent Power Management. Support for Intelligent Power Management might not be currently available for your Cisco power source

3.

The Cisco switch uses Intelligent Power Management to inform the access point of the power injector being used.

4.

Cisco switches that support Intelligent Power Management always configure the use of a power injector at the switch.

5.

The access point detects the power injector (AIR-PWRINJ4).

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Issuing the Cisco IOS Command Using the CLI

Follow these steps to issue the Cisco IOS command for your power scenario:

Step 1

Step 2

Step 3

Step 4

Connect a PC to the access point console port and use a terminal emulator to establish a session with the access point (refer to the

“Connecting to the Access Point Locally” section on page 3-22 ).

From the global configuration mode (refer to the Cisco IOS Software Configuration Guide for Cisco

Aironet Access Points), enter the command below that applies to your power configuration (see

Table 3-3

and

Table 3-4 ):

power inline negotiation injector installed (not required)

no power inline negotiation injector (not required)

power inline negotiation prestandard source

no power inline negotiation prestandard source

Enter the write memory command to save the setting to the access point memory.

Enter the quit command to exit the terminal session.

Configuring the Access Point System Power Settings Using a Browser

You can also use your browser to set the access point system power settings.

Note

When using the access point browser interface, you should disable your browser pop-up blocker.

Figure 3-3 shows the system power setting options and indicates the access point power status (1250

series power injector detected).

Figure 3-3 System Power Settings

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Table 3-5 and

Table 3-6 lists the access point system power settings and the Cisco switch power

commands for several power options.

System Power Settings and Cisco Switch Commands for Access Points with a Single Radio Module Table 3-5

Power Source

AC power module

Cisco switch that supports

Intelligent Power Management

Cisco switch that does not support Intelligent Power

Management

1

Power injector

Power injector

2

Cisco switch that supports

Intelligent Power Management

2

used with a used with a

Cisco switch that does not support Intelligent Power

Management

1

1

1

Access Point System Power Settings

Configuration changes are not required

Power Settings:

Power Negotiation (selected)

Power Injector:

Installed on Port with MAC Address (unchecked)

Power Settings:

Pre-standard Compatibility (selected)

Power Injector:

Installed on Port with MAC Address (unchecked)

Power Settings:

Power Negotiation (selected)

Power Injector:

Installed on Port with MAC Address (unchecked)

Power Settings:

Power Negotiation (selected)

Power Injector:

Installed on Port with MAC Address (checked)

Configuration changes are not required

Cisco Switch

Power Command power inline never power inline auto power inline auto power inline never power inline never

Power injector used with a non-Cisco switch

1.

You should check the release notes for your Cisco power source to determine which Cisco IOS release supports Intelligent Power Management. Support for Intelligent Power Management might not be currently available for your Cisco power source.

2.

Power injector must be AIR-PWRINJ4.

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Table 3-6 System Power Settings and Cisco Switch Commands for Access Points with Dual Radio Modules

Power Source

AC power module

Power injector

1

used with a

Cisco switch that supports

Intelligent Power Management

2

Power injector

1

used with a

Cisco switch that does not support Intelligent Power

Management

2

Access Point System Power Settings

Configuration changes are not required

Power Settings:

Power Negotiation (selected)

Power Injector:

Installed on Port with MAC Address (checked)

Power Settings:

Pre-standard Compatibility (selected)

Power Injector:

Installed on Port with MAC Address (checked)

Configuration changes are not required

Cisco Switch

Power Command power inline never power inline never power inline never

Power injector

1

used with a non-Cisco switch

1.

Power injector must be AIR-PWRINJ4.

2.

You should check the release notes for your Cisco power source to determine which Cisco IOS release supports Intelligent Power Management. Support for Intelligent Power Management might not be currently available for your Cisco power source.

Follow these steps to configure your access point power settings using the browser interface:

Step 1

Step 2

Step 3

Step 4

Obtain the access point IP address and browse to your access point.

At the prompt, enter the administrator username and password. The default username is Cisco and the default password is Cisco. The username and password are case sensitive.

Perform one of these operations:

a.

When you browse to your access point operating in low-power mode, a Warning message displays indicating that all radios are disabled due to insufficient power. Click OK to jump to the System

Power Settings located on the System Software > System Configuration page.

b.

When you browse to your access point operating in full-power mode, choose System Software >

System Configuration.

Choose one of these Power Settings options (see

Figure 3-3 ):

a.

b.

c.

If your Cisco switch supports Intelligent Power Management negotiations, choose Power

Negotiation.

If your Cisco switch does not support Intelligent Power Management negotiations, choose

Pre-standard Compatibility.

If you are using a non-Cisco switch, changes to the power settings are not required.

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Running the Carrier Busy Test

Step 5

If you are using a power injector with a Cisco switch, choose one of these Power setting options (see

Figure 3-3

):

a.

b.

If your Cisco switch supports Intelligent Power Management negotiations, uncheck Installed on

Port with MAC address.

If your Cisco switch does not support Intelligent Power Management, check Installed on Port with

MAC address and ensure the MAC address for your switch port is displayed in the MAC address field. The HHHH.HHHH.HHHH indicates the MAC address contains 12 hexadecimal digits.

Note

The MAC address field is not case-sensitive.

Step 6

Step 7

Click Apply and a message displays indicating that you should disable pop-up blockers before proceeding.

Click OK to continue. Your access point reboots and your power settings are configured in the access point.

Note

You might have to refresh your browser page to obtain the latest browser page that indicates your radios are enabled.

Running the Carrier Busy Test

You can use the carrier busy test to determine the least congested channel for a radio interface (2.4-GHz or 5-GHz radio module). You should typically run the test several times over several days to obtain the best results and to avoid temporary activity spikes.

Note

The carrier busy test is primarily used for single access points or bridge environments. For sites with multiple access points, a site survey is typically performed to determine the best operation location and operating frequency for the access points.

Note

All associated clients on the selected radio will be deassociated during the 6 to 8 seconds needed for the carrier busy test.

Follow these steps to activate the carrier busy test:

Step 1

Step 2

Use your web browser to access the access point browser interface.

At the prompt, enter the administrator username and password. The default username is Cisco and the default password is Cisco. The username and password are case sensitive.

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Step 3

Running the Ping Test

When the Summary Status page displays, click

Network Interfaces > Radio0-802.11N

2.4GHZ

and the radio status page displays

Note

The module slot (slot 0 or slot 1) where the radio module is located defines the Radio0 or Radio1 designation. See Figure 1-1 on page 1-3 for the location of the module slots.

Step 4

Step 5

Step 6

Step 7

Click the Carrier Busy Test tab and the Carrier Busy Test page displays

Click Start to begin the carrier busy test.

When the test completes, the results are displayed on the page. For each of the channel center frequencies, the test produces a value indicating the percentage of time that the channel is busy.

To perform a link test on the second radio module, repeat steps 2 through 4 for the Radio1-802.11N

5GHZ rado interfaces.

When the test completes, the results are displayed on the page. For each of the channel center frequencies, the test produces a value indicating the percentage of time that the channel is busy.

Close your browser.

Running the Ping Test

You can use the ping test to evaluate the link to and from an associated wireless device. The ping test provides two modes of operation:

a.

Performs a test using a specified number of packets and then displays the test results.

b.

Performs a test that continuously operates until you stop the test and then displays the test results.

Follow these steps to activate the ping test:

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Use your web browser to access the access point browser interface.

At the prompt, enter the administrator username and password. The default username is Cisco and the default password is Cisco. The username and password are case sensitive.

Click Association and the main association page displays.

Click the MAC address of an associated wireless device and the Statistics page for that device displays.

Click the Ping/Link Test tab and the Ping/Link Test page displays.

If you want to specify the number of packets to use in the test, follow these steps:

a.

Enter the number of packets in the Number of Packets field

b.

c.

Enter the packet size in the Packet Size field.

Click Start.

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Resetting to the Default Configuration

Step 7

If you want to use a continuous test, follow these steps:

a.

b.

Enter the packet size in the Packet Size field.

Click Start to activate the test.

c.

Click Stop to stop the test.

When the test has completed, the test results are displayed at the bottom of the page. You should check for any lost packets that can indicate a problem with the wireless link. For best results, you should also perform this test several times.

Resetting to the Default Configuration

If you forget the password that allows you to configure the access point, you may need to completely reset the configuration. You can use the MODE button on the access point or the web-browser interface.

Note

The following steps reset all configuration settings to factory defaults, including passwords, WEP keys, the IP address, and the SSID.

Using the MODE Button

Follow these steps to delete the current configuration and return all access point settings to the factory defaults using the MODE button:

Step 1

Step 2

Step 3

Step 4

Disconnect power (the power jack for external power or the Ethernet cable for in-line power) from the access point.

Press and hold the MODE button while you reconnect power to the access point.

Hold the MODE button until the Ethernet LED turns an amber color (approximately 2 to 3 seconds), and release the button.

After the access point reboots, you must reconfigure the access point by using the Web browser interface, the Telnet interface, or Cisco IOS commands.

Note

The access point is configured with the factory default values including the IP address (set to receive an IP address using DHCP).

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Reloading the Access Point Image

Using the Web Browser Interface

Follow these steps to delete the current configuration and return all access point settings to the factory defaults using the web browser interface.

Step 1

Open your Internet browser.

Note

When using the access point browser interface, you should disable your browser pop-up blocker.

Step 2

Step 3

Step 4

Step 5

Step 6

Enter the access point’s IP address in the browser address line and press Enter. An Enter Network

Password page displays.

At the prompt, enter the administrator username and password. The default username is Cisco and the default password is Cisco. The username and password are case sensitive. The Summary Status page displays.

Click System Software and the System Software page displays.

Click System Configuration and the System Configuration page displays.

Click the Reset to Defaults button.

Note

If the access point is configured with a static IP address, the IP address does not change.

Step 7

After the access point reboots, you must reconfigure the access point by using the Web browser interface, the Telnet interface, or Cisco IOS commands.

Reloading the Access Point Image

If your access point has a firmware failure, you must reload the complete access point image file using the Web browser interface or by using the MODE button (see

Figure 3-4 ). You can use the browser

interface if the access point firmware is still fully operational and you want to upgrade the firmware image. However, you can use the MODE button when the access point has a corrupt firmware image.

Using the MODE Button

You can use the MODE button on the access point to reload the access point image file from an active

Trivial File Transfer Protocol (TFTP) server on your network or on a PC connected to the access point

Ethernet port.

Note

If your access point experiences a firmware failure or a corrupt firmware image, indicated by the Status

LED turning an amber color, you must reload the image from a connected TFTP server.

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Note

This process resets all configuration settings to factory defaults, including passwords, WEP keys, the access point IP address, and SSIDs.

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Reloading the Access Point Image

Follow these steps to reload the access point image file:

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

Step 9

The PC you intend to use must be configured with a static IP address in the same subnet as the access point.

Place a copy of the access point image file (such as c1250-k9w7-tar.124-10b.JA.tar) into the TFTP server

folder on your PC. For additional information, refer to the “Obtaining the Access Point Image File” and

“Obtaining the TFTP Server Software” sections.

Rename the access point image file in the TFTP server folder to c1250-k9w7-tar.default.

Activate the TFTP server.

If using in-line power, use a Category 5E (or higher) Ethernet cable to connect your PC to the

To Network Ethernet connector on the power injector.

Disconnect power (the power jack for external power or the Ethernet cable for in-line power) from the access point.

Press and hold the MODE button while you reconnect power to the access point.

Hold the MODE button until the Radio LED turns a red color (approximately 20 to 30 seconds), and release the MODE button.

After the access point reboots, you must reconfigure the access point by using the Web interface, the

Telnet interface, or Cisco IOS commands.

Web Browser Interface

You can also use the Web browser interface to reload the access point image file. The Web browser interface supports loading the image file using HTTP or TFTP interfaces.

Note

Your access point configuration is not changed when using the browser to reload the image file.

Browser HTTP Interface

The HTTP interface enables you to browse to the access point image file on your PC and download the image to the access point. Follow these instructions to use the HTTP interface:

Step 1

Open your Internet browser.

Note

The access point web-browser interface is fully compatible with Microsoft Internet Explorer version 6.0 on Windows 98 and 2000 platforms and with Netscape version 7.0 on Windows 98,

Windows 2000, and Solaris platforms.

Note

When using the access point browser interface, you should disable your browser pop-up blocker.

Step 2

Enter the access point’s IP address in the browser address line and press Enter. An Enter Network

Password page displays.

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Reloading the Access Point Image

Step 3

Step 4

Step 5

Step 6

At the prompt, enter the administrator username and password. The default username is Cisco and the default password is Cisco. The username and password are case sensitive. The Summary Status page displays.

Click the System Software tab and then click Software Upgrade. The HTTP Upgrade page displays.

Click the Browse button to locate the access point image file (such as c1250-k9w7-tar.124-10b.JA.tar ) on your PC.

Click Upload.

For additional information, click the Help icon on the Software Upgrade page.

Browser TFTP Interface

The TFTP interface allows you to use a TFTP server on a network device to load the access point image file. Follow these instructions to use a TFTP server:

Step 1

Open your Internet browser.

Note

When using the access point browser interface, you should disable your browser pop-up blocker.

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

Step 9

Enter the access point’s IP address in the browser address line and press Enter. An Enter Network

Password page displays.

At the prompt, enter the administrator username and password. The default username is Cisco and the default password is Cisco. The username and password are case sensitive. The Summary Status page displays.

Click the System Software tab and then click Software Upgrade. The HTTP Upgrade page displays.

Click the TFTP Upgrade tab.

Enter the IP address for the TFTP server in the TFTP Server field.

Enter the file name for the access point image file (such as c1250-k9w7-tar.124-10b.JA.tar) in the Upload

New System Image Tar File field. If the file is located in a subdirectory of the TFTP server root directory, include the relative path of the TFTP server root directory with the filename. If the file is located in the

TFTP root directory, enter only the filename.

Click the Upload button.

When a message displays that indicates the upgrade is complete, click OK.

For additional information click the Help icon on the Software Upgrade page.

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Obtaining the Access Point Image File

Obtaining the Access Point Image File

The access point image file can be obtained from the Cisco.com software center using these steps:

Step 1

Step 9

Step 10

Step 11

Step 12

Step 13

Step 14

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

Use your Internet browser to access the Cisco Software Center at the following URL: http://www.cisco.com/cisco/software/navigator.html

On the Enter Network Password window, enter your Cisco.com username and password and click OK.

Click Access Points > Cisco Aironet 1250 Series.

Click Cisco Aironet 1250 Access Point.

Click IOS.

Choose the Cisco IOS release desired, such as 12.4.10b-JA.

Click Wireless LAN for an access point image file, such as c1250-k9w7-tar.124-10b.JA.tar.

Click DOWNLOAD.

Read and accept the terms and conditions of the Software Download Rules.

On the Enter Network Password window, enter your Cisco.com username and password and click OK.

Click Save to download your image file to your hard disk.

Select the desired download location on your hard disk and click Save.

When the download completes, click Close.

Close your browser.

Connecting to the Access Point Locally

If you need to configure the access point locally (without connecting the access point to a wired LAN), you can connect a PC to its console port using a DB-9 to RJ-45 serial cable.

Caution

Be careful when handling the access point, the bottom plate might be hot.

Note

After completing your configuration changes, you must remove the serial cable from the access point.

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Connecting to the Access Point Locally

Follow these steps to open the CLI by connecting to the access point console port:

Step 1

Connect a nine-pin, female DB-9 to RJ-45 serial cable to the RJ-45 console port on the access point and to the COM port on a computer.

Tip

Bend the RJ-45 connector end of the cable approximately 90 degrees before attempting to connect to the access point console port.

Figure 3-4 shows the console port and MODE button locations.

Figure 3-4 Console Port and MODE Button Locations

CAUTION

EXTERNAL DC AND INLINE PoE

POWER SOURCE REQUIREMENTS

DETERMINED BY INSTALLED

RADIO MODULES

REFER TO

PRODUCT DOCUMENTATION

+56VDC ETHERNET

1 2

1

DC power connector (56 VDC)

2

Ethernet port connector (RJ-45)

CONSOLE MODE

3 4

3

Console port (RJ-45)

4

MODE button

Note

The Cisco part number for the DB-9 to RJ-45 serial cable is AIR-CONCAB1200. Browse to http://www.cisco.com/go/marketplace to order a serial cable.

Step 2

Step 3

Set up a terminal emulator on your PC to communicate with the access point. Use the following settings for the terminal emulator connection: 9600 baud, 8 data bits, no parity, 1 stop bit, and no flow control.

At the prompt, enter the administrator username and password. The default username is Cisco and the default password is Cisco. The username and password are case sensitive.

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Obtaining the TFTP Server Software

Obtaining the TFTP Server Software

You can download TFTP server software from several web sites. Cisco recommends the shareware TFTP utility available at this URL: http://tftpd32.jounin.net

Follow the instructions on the website for installing and using the utility.

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