How to tell which lightweight access point is offline?

I may be missing something really obvious here, but is there a coherent way to tell which access point has dissociated from a Cisco controller? For example - i have a controller here with many hundreds of access points being installed. If i have say 500 access points associated and i unplug a random one, the "all APs" in the controller summary will simply drop to 499 total, not 500 total, 499 up and 1 down as i would have expected - it's therefore a bit of a nightmare to trace a missing access point when the number suddenly drops below what i am expecting based on the number i know are physically installed.
Hope that makes sense!!! Appreciate any guidance you guys may have!

Several ways of doing this:
1. If you have a network monitoring tools like WCS/NCS/PI, then it is Cisco's preferred method. You can enable WCS/NCS/PI to email alerts (personally, I wouldn't recommend it).
2. WCS/NCS/PI uses SNMP to poll the different WLC in your network. You can craft your own to generate your own system (what we are doing now).

Similar Messages

Is there any way I can control which specific access point I connect (and stay connected) to from amongst a set of access points with the same SSID?

I'm working from a boat in a harbor in which the ISP has deployed numerous access points around the periphery. All the access points share the same SSID and each is configured to use either channel 1, 6 or 11. From my location, there are over a dozen of these access points "visible" (based on the the output of WiFi Scanner) with a range of RSSI and S/N values that vary over time.
The ISP has told me that the quality of my connection should be "perfectly fine" for any access point with an RSSI value better than -75, but I know from experience that my connection quality is miserable (i.e. < 50Kbps download) for almost all of these, including those with RSSI values better than -75. There is at least one exception, however, which gives me on the order of 2Mbps download, which is "great" in this context.
I've tried using a more powerful USB antenna plugged into my MacBook Air (mid 2011), but as far as I can tell, it really doesn't make much difference. Neither does my location within the boat. The overriding factor seems to be which access point I happen to connect up to.
I should point out that the closest access points are about 75 yards away, with many of them being several hundred yards away or more. I'm guessing that even though the signal strength of some of the distant access points is causing them to get "chosen" some times, the results are unacceptable due to the distance.
I'm hoping that I can determine, through experimentation, which access point(s) provide(s) acceptable performance and then configure my Mac to limit my connection to those points through whatever mechanism I need to use (e.g. channel, MAC id, etc.).

Establishing a wireless connection with a client computer is left to the access point for various reasons. One reason that your Mac may not connect to the strongest access point is that it may have reached a limit of the number of clients it can serve, leaving it unable to accept a connection with another. The limit may not be very large.
Suppose that happens, and your Mac establishes a connection with a more distant access point having a weaker signal. Then, suppose a client drops off the network. Doesn't this mean your Mac will switch to the stronger access point? Not necessarily. The throughput delivered to and from your Mac would have to drop below a threshold specified in the AP for it to drop the client, leaving your Mac free to connect with another one. The reason for this is to prevent rapid switching from one AP to another in an area in which two signals are of approximately equal quality. If that were to occur the frequent and repetitive handshaking between the two devices would slow throughput to zero.
In an environment in which several access points are broadcasting the same SSID, Apple provides no insight as to how it determines which access point to choose. This is the reason I suspect this "choice" is a function of the router, or access point. The connection originates with it, not the Mac.
Now, what would solve your dilemma would be to determine a way to control the access point with which your Mac connects, by specifying the access point's unique MAC address for example. In this happy circumstance, you could maintain an editable "whitelist" or "blacklist" of the harbor's access points and be able to choose which among them you prefer.
I do not believe OS X maintains such a record of MAC addresses though, only those of the routers it uses. If I am correct about that, such a solution is unlikely to exist. Don't let that discourage you from searching for one though... I would concentrate on something like "selecting access point by specific MAC address".
I did find this patent application though:
Roaming Network Stations Using A Mac Address Identifier To Select New Access Point
Perhaps it's a start

QOS config 4500 switchport for Lightweight access point

What is the best QOS configuration what needs to be applied on a 4500 switchport for Lightweight access point.

Hi,
If you are asking about Layer 2 QoS configuration for switch-port then it is global command, which will apply on all switch-ports, not for any specific switch-port.
As far as switch-port mode is concern which in connected to LWAP then yes it is better you keep it in default mode.

Connection between lightweight access point and switch?

Hello everybody,
I am a bit confused about cisco 1000 series access point connection. On wireless lan controller and lightweight access point basic configuration example document id 69719 (http://www.cisco.com/en/US/products/ps6366/products_configuration_example09186a0080665cdf.shtml), I understood the access point has two vlans associated with (vlan 3 and 4). Am I correct?
Why is connection between access point and catalyst port just access port rather 802.1q trunk? How vlan traffic can traverse from the access point to controller?
Please advice.
Many thanks,
Nitass

Nitass,
The AP itself does not need to be a trunked port, but the uplink to the controller does. When using a Lightweight enviroment, all the traffic passes thru an encrypted LWAPP tunnel from the AP to the controller, and then gets sent out the correct VLAN interface on the controller.

HT201302 I am trying to upload pictures from my phone to my computer and I'm getting an error message that a photo is corrupted so it can't download. I don't know how to tell which of the photos is corrupted so that I can delete it and try again? Thanks

I am trying to upload pictures from my phone to my computer and I'm getting an error message that a photo is corrupted so it can't download. I don't know how to tell which of the photos is corrupted so that I can delete it and try again? Thanks!

If this is an iCloud account the Outbox only appears when sending an email, so if it is still trying I suppose it should be showing now (not sure though, hard to replicate this)
What type of email account?

How to tell: Which version of camera raw do I have?

How to tell which version of camera raw I have? The only Google search I found answering this question refers to is 2 years old and seems to no longer apply. There is no File, Edit etc. menu on the new version of Camera Raw with (Photoshop/Bridge CS6). I do use Adobe Application Manager to do my updates telling me if a new version exists or not, nevertheless I would like to know.

The F key works as described for me in CS6-ACR7.4 with ACR as the window with focus. The same function is available using the double-arrow-window icon at the right of the Preview checkbox near the top right of the preview area.
When in full-screen mode there is no title bar, but when I press the F key or click the double-arrow, again, ACR becomes smaller and I can see the title bar that includes the ACR version and camera model. This is on Windows7-64-bit on a 1600x1050 monitor. Perhaps you’re ACR’s title bar is off the top of the screen so you can’t see it, or maybe ACR optimizes some things if you have a smallish display—do you?
A plug-in is a program that interfaces with another program but is not independently runnable application, itself, bit is independently updatable, so in this instance, Photoshop doesn’t need to be downloaded and installed every time Adobe adds support for a few more cameras.

Which Cisco Access Point is Waterprof ? (outdoor:BR1300 + AIR-ANT24120)

hi,
My questions to the community :
i have to choose for a customer some 50 Access points but that must have an external antennas with at least 8 dbi as gain and to be waterprof
for me the BR1300 + AIR-ANT24120 is a good choice if the BR1300 is Waterproof (For me :normaly all Cisco Access Point Outdoor must be WaterProof : but i want to have a confirmation with a document if possible )
and it's interessant to knew ,which Cisco Access Point is Waterproof ?
Think you All !
Zammit Ikbel

the 1310 is going to be waterproof, as is the 15xx product line, (152x and 155x). All this can be found in the data sheet for the AP.
That being said, you can also put any of the external AP into a NEMA enclosure, and have it be waterproofed, so long as the enclosure is rated as such.
HTH,
Steve

How to tell which photos in iPhoto are HDR images.

Does anyone know how to tell which photos in iPhoto are HDR images. When I click on the Info button for the image it doesn't indicate if it was an HDR.
Does anyone have any information about this?
I'm using a new iPhone 5s with basically a new iMac.
Thanks,
Hagrid...

You can do a filter on your library with "File Status" is "Missing". The "File Status" query is not available by default, but you can add it by clicking the upper-right button in the filter window.
nathan

Can you hard code the speed and duplex on lightweight access points

I have a client that want to set the spped and duplex on the switch port. Is there a way you can configure the fastethernet port on a lightweight access point for speed and duplex.

Try this step
configure terminal
Enter global configuration mode.
Step 2
interface fastethernet0
Enter configuration interface mode.
Step 3
speed {10 | 100 | auto}
Configure the Ethernet speed. Cisco recommends that you use auto, the default setting.
Step 4
duplex {auto | full | half}
Configure the duplex setting. Cisco recommends that you use auto, the default setting.
Step 5
end
Return to privileged EXEC mode.
Step 6
show running-config
Verify your entries.
Step 7
copy running-config startup-config

How to tell which JButton is clicked?

I have a layout with 3 panels. Each panel has an 'Add' button inside it. However, I can't work out how to tell which 'Add' button has been clicked by the user. Normally I would put code to select from the text on the button, but this time they are all the same. Any ideas how I can do it?
Thanks

DrLaszloJamf: Do you have a simple example that you
could post? I thought all
ActionListeners/MouseListeners in the same class had
to be dealt with in the same place.I'll give you an example in a mo', but here's another solution if you really
want one ActionListener to listen to multiple sources: explicitly set the
button's actionCommand strings. This string defaults to the button's text,
but can be explicitly set to anything you want. This is useful, for obvious
reasons, if you are writing a multilingual app (I'm Canadian, so that's
part of the furniture).
import java.awt.event.*;
import javax.swing.*;
public class Example implements ActionListener {
    private static final String MUG_COMMAND = "mug";
    private static final String WUMP_COMMAND = "wump";
    public void actionPerformed(ActionEvent event) {
        String actionCommand = event.getActionCommand();
        if (MUG_COMMAND.equals(actionCommand))
            System.out.println("doing mug action");
        else if (WUMP_COMMAND.equals(actionCommand))
            System.out.println("doing wump action");
        else
            System.out.println("neither mug nor wump: " + actionCommand);
    public static void main(String[] args) {
        ActionListener app = new Example();
        JPanel contentPane = new JPanel();
        JButton button1 = new JButton("add");
        button1.setActionCommand(MUG_COMMAND);
        button1.addActionListener(app);
        contentPane.add(button1);
        JButton button2 = new JButton("add");
        button2.setActionCommand(WUMP_COMMAND);
        button2.addActionListener(app);
        contentPane.add(button2);
        JButton button3 = new JButton("add");
        button3.addActionListener(app);
        contentPane.add(button3);
        JFrame.setDefaultLookAndFeelDecorated(true);
        final JFrame f = new JFrame("Mugwump");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setContentPane(contentPane);
        f.pack();
        SwingUtilities.invokeLater(new Runnable(){
            public void run() {
                f.setLocationRelativeTo(null);
                f.setVisible(true);
}

Is Cisco air-ap1230a a lightweight access point?

Is Cisco air-ap1230a a lightweight access point? Can it be use for the new CCNP training?
Thanks

Hi Bao,
The 1230 is not a Lightweight AP, but can be upgraded to LWAPP with the A Radio model listed below (Note that this model is EOS/EOL) this is probably not the best choice for your studies;
Solution Requirements
Migration from autonomous access point mode to lightweight mode is possible on these Cisco Aironet access point platforms:
All 1130AG access points
All 1240 AG access points
For all IOS-based 1200 series modular access point (1200/1220 Cisco IOS Software Upgrade, 1210 and **1230 AP**) platforms, it depends on the radio:
if 802.11G, MP21G and MP31G are supported
if 802.11A, RM21A and RM22A are supported
The 1200 series access points can be upgraded with any combination of supported radios: G only, A only, or both G and A.
All 1310 AG access points
From this good doc;
http://www.cisco.com/en/US/products/hw/wireless/ps430/prod_technical_reference09186a00804fc3dc.html
Cisco Aironet 1200 Series Access Point Ordering Guide
http://www.cisco.com/en/US/products/hw/wireless/ps430/prod_technical_reference09186a00800c9435.html
EOS & EOL for the Cisco Aironet 1200 Series 802.11a Access Points
http://www.cisco.com/en/US/products/hw/wireless/ps430/prod_eol_notice0900aecd801e5303.html
Understanding the Lightweight Access Point Protocol (LWAPP)
http://www.cisco.com/en/US/netsol/ns340/ns394/ns348/ns337/networking_solutions_white_paper0900aecd802c18ee.shtml
Lightweight Access Point FAQ
http://www.cisco.com/en/US/products/ps6306/products_qanda_item09186a00806a4da3.shtml
Lightweight AP (LAP) Registration to a Wireless LAN Controller (WLC)
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a00806c9e51.shtml
**You are probably better off with something like the LAP 1131. Have a look here;
http://www.cisco.com/en/US/products/hw/wireless/products_category_buyers_guide.html#access_points
Hope this helps! I noticed your other post regarding the WLC suggestions and have responded there as well :)
Rob

Managing Lightweight Access Points in Ciscoworks LMS 4.0

Hello,
Is it possible to manage Lightweight Access Points in Ciscoworks LMS 4.0?
Regards,
Henk van Gruijthuijsen

Only autonomous AP's are supported for inventory as yjdabear mentions above. LWAPP AP's cannot be managed or inventoried in LMS
http://www.cisco.com/en/US/partner/docs/net_mgmt/ciscoworks_lan_management_solution/4.0/device_support/table/lms40sdt.html

Which outdoor access points to connect two buildings (500ft distance)?

Hello,
We have a client that needs to wirelessly connect two buildings at their location, around 500ft over a parking lot. There are no significant line-of-sight obstructions. Which outdoor access points would be most suitable for this, and what is the maximum speed we can expect from such a connection?
Thanks
Tim

You can configure point-to-point wireless bridging.
Wireless Bridges Point-to-Point Link Configuration Example
http://www.cisco.com/en/US/customer/tech/tk722/tk809/technologies_configuration_example09186a008058f53e.shtml
Next, you can use either indoor access point or outdoor/mesh access point. I'd recommend indoor. Since it's going to be point-to-point, no need to get an AP that can support 802.11n because it's not supported. This brings your choices down to a Cisco 1242 (dual radios).
In regards to antennaes, AIR-ANT2410Y is a contender. Have a look at the complete portfolio for more information.
Cisco Aironet 2.4 GHz and 5 GHz Antennas and Accessories
http://www.cisco.com/en/US/prod/collateral/wireless/ps7183/ps469/product_data_sheet09186a008022b11b.html
Hope this helps. Please don't forget to rate useful posts. Thanks.

How to tell which node a session connects to in 9i RAC

I have a 6 nodes 9i RAC database. While running a process, how to tell which node it is connecting to?

Hi,
SQL> select inst_id, sid, username from gv$session ;
inst_id is the instance number a session is running on.
select from the v$instance view to know to instance number you are actually connect to
SQL> select instance_number from v$instance ;
INSTANCE_NUMBER
1
note the the "g" before the view "v$session", that's for GLOBAL (all instances of the cluster) : check the views gv$parameter, etc...
Fred

How to assign static ip to lightweight Access Point 1131AG before registering to controller

Hi,
I have Wireless LAN controller which is installed in corporate office , we have enabled H-reap so that remote office access point can be registered with corporate office controller.
Now i have one AP at one of the remote site now i want to give static IP address to AP through console that too , before registering controller.
I have got console with below name :
......MAC Address....>
but if i type any command to assign IP address , it shows the error " Command Disabled "
I have attached details for more calrification.
As I know that I can connect this AP to corporate office LAN and get registered with WLC and then through WLC GUI , i can assign static IP address but i need solution to assign static IP before getting registered to WLC.
I will be obliged if i get proper solution

Hi Vinod,
I have already posted the bug ID and i request you to perform the work around specified in that.. i mean.. here it is again..
Ok... here is the BUG..CSCsy17745
http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsy17745
lemme know if this helps and answers you after performing the work around!!
Don't forget to rate answers that you find useful
Regards
Surendra

How to tell which lightweight access point is offline?

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