Question about Wireless Controller and LAG.

I have a Wireless Controller 4400.
When I configure the controller with LAG, I have to connect the controller to a L3 switch?
If I connect the controller to a L2 switch the LAG works?
Some one can tell me something about this?
Thanks in advance,
Rui

Copper? so you are using rj-45 Gb SFPs on the controller. If that is the case, what is the speed of the switchports on the 2960?
I use the rj-45 Gb SFPs on our 4402s and they work fine connected to Gb rj-45 ports on the switches.
Also, check out the following:
http://www.cisco.com/en/US/docs/wireless/controller/4.2/configuration/guide/c42mint.html#wp1116136
"Using the CLI to Verify Link Aggregation Settings
To verify your LAG settings, enter this command:
show lag summary
Information similar to the following appears:
LAG Enabled
Configuring Neighbor Devices to Support LAG
The controller's neighbor devices must also be properly configured to support LAG.
â¢Each neighbor port to which the controller is connected should be configured as follows:
interface GigabitEthernet
switchport
channel-group mode on
no shutdown
â¢The port channel on the neighbor switch should be configured as follows:
interface port-channel
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan
switchport trunk allowed vlan
switchport mode trunk
no shutdown

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Question about Wireless Design and Controller

Hi Everyone,
Although I am not new to Cisco, I have somewhat limited experience with Wireless in general. I was hoping to get your help with the following:
We currently have a total of 8 1130AG, 4 on each floor. They were configured a few years ago, and now we are looking to update the design a bit. Each AP has its own SSID, and just provide internet access. Looking at the configuration, I noticed that they are not configured to use proper channels, just random channels (9, 10, 11, instead of 1, 6, 11, etc.). I noticed that when I roam between one AP to another, I lose about 4-8 pings before I re-establish connectivity again.
Here are my questions:
1. Do I need a controller in order to use just one SSID for the whole setup instead of the 8 seprate ones we currently have?
2. Will the controller helps in providing seamless transition when a client roams between AP's?
3. Is it normal to loose connectivity roaming around?
4. Can I reconfigure the current setup to use just one SSID and provide better transition between AP without the use of a controller?
5. Which controller would you recommend?
We don't have a need to anything fancy ,I am aware that I can enable multiple SSID, VLAN's, etc. Just trying to keep it as simple as possible, yet reliable.
Your input is appreciate.
Thanks

1. With 8 AP's only, a WLC would be nice-to-have but not necessary. You can configure WLSE and it will do some limited functions.
2. This depends on the signal strengths, wireless coverage and configuration. If you enable WLSE, for instance, and you have no wireless black spots, then roaming should be no issues.
3. See #2.
4. You can configure multiple SSID (up to 16 are broadcasted) but if one AP doesn't have the SSID you use for roaming, the association will drop when the client tries to join that particular AP. It's like mobile phone towers. If your carrier is not in the area, you sure won't be able to use your mobile phone in that area.
5. For 8 1130 APs, I'd recommend the smallest of the lot: 2106 with either 6, 12 or 25 AP licenses. I'd recommend you the 25 AP licenses. If your finances allow you something bigger, then consider either the 4402 (25 AP licenses) or the 5508.
Cisco 2100 Series Wireless LAN Controllers
http://www.cisco.com/en/US/prod/collateral/wireless/ps6302/ps8322/ps7206/ps7221/product_data_sheet0900aecd805aaab9.html
Cisco 4400 Series Wireless LAN Controllers
http://www.cisco.com/en/US/prod/collateral/wireless/ps6302/ps8322/ps6307/product_data_sheet0900aecd802570b0_ps6366_Products_Data_Sheet.html
Cisco 5500 Series Wireless Controllers Data Sheet
http://www.cisco.com/en/US/prod/collateral/wireless/ps6302/ps8322/ps10315/data_sheet_c78-521631.html

Followup question about wireless scanning (and many thanks to PaHu)

Hi,
Got my Canon MP980 communicating properly with my macs AND our linux machine now!
I'm having no luck using the bundled MP Navigator EX to scan documents and photos.. everything appears to be turned on and initialized correctly, the printer is on and idle on the home screen. but when I hit the scan button I see the error message:
cannot communicate with scanner. cable may be disconnected or device may be turned off. and an error code of 1.0.0
Is it possible the scanner (or this app) won't do it wirelessly? I can't use a cable without re-arranging a lot of furniture, lol.
Best regards,
Chris

Hello Chris. I believe the MP Navigator software should work across the network, however it may have to be configured to do so. (Personally, I don't use the application - I've never found it to be that reliable. I prefer to scan directly into Acrobat using the Create PDF > From Scanner).
I would think that in order to get Navigator working, you need to ensure that the network scanning utility is working and correctly configured. When you installed the IJ Network Tool, it should have also installed the Canon IJ Network Scan Utility. Often it will add an icon to your menubar that looks like an art-deco desk lamp. If it hasn't or you aren't sure which icon this is, you can open the application by navigating to Mac HD > Library > Printers > Canon > BJPrinter > Utilities and opening Canon IJ Network Scan Utility. This will display a pane that lets you set the MP980 as a network scanner. Once you have the MP980 you can then start scanning from an application to test.
You can use Preview, but you will need to register the scanner first via Image Capture, located in Applications. When you first open Image Capture, you may see a message stating that no image capture device is connected. To register the scanner, click on Devices > Browse Devices. This pane will show 'Canon MP980 series Network'. Click on the 'Use TWAIN UI'. Another pane will now appear asking where you want to scan the file to, what name to call it and the format to save it as. Enter/select your desired settings and click Scan. The ScanGear window should now appear letting you preview the image and select a variety of other settings. Select Preview, highlight the section of the image you want, and press Scan to finish the scan.
Once you get the above working, then you can try and get Navigator working, but as I have said, I don't think you need it unless you want to initiate the scan from the machine.
HTH
PaHu

Question about wireless security and setup.

Ok, I have a pretty long house and my router is in the garage and I want wireless access in my bedroom. Here's the deal. Coming from the wall I have cable modem plugged into a WRT54g. That feeds 5 or 6 different WIRED PC's on that side of the house, but the other side isnt wired. So 1/2 way across I have a WRE54G setup as a range extender to reach the bedroom. I just bought a WUSB11 because the pc in the bedroom has no open PCI slots, and doesnt need the speed of G so a B connection should be fine. If I turn off all security everything is ok, everybody gets connected, including the neighb's. So I turned on WEP in the router WRT54G, it generates 6 keys I setup the WRE54G from my laptop sitting right next to it, and I enabled WEP in that as well, so I enabled WEP there and entered key #2 from the list supplied by the WRT54G, key#1 went into my laptop, which connects just fine. HOWEVER in the bedroom the WUSB11 sees the network just fine, but no matter WHAT key I enter into the WUSB11 it will NOT connect in anyway. anyone have ANY ideas? I would REALLY love to have this working and I would HATE to have top turn off my security, I really dont like o tust ny neighbors. thanks j

thanks wizzard, now I had a chat going with linksys tech support and they suggested that the WEP keys in all THREE devices be the same. now I may have left out of my original message the fact that key #1 that was generated by the router, is currently being used in an ACER laptop that has a NON linksys G device, and it connects just fine. so should EVERYTHING on the wireless be using the same key? and oobviously the same transmit id (1) thanks for your help j

Question About Color's and Gradients

Hi all,
I have a question about color swatches and gradients.
I am curious to know, if I have 2 color swatches that I make into a gradient color, is it posible to change the tint of each indivdual color in that gradient and have that applied to the gradient without having to adjust the gradients opacity.
The reason that I'm asking this is because in creating a project I found that the colors that I chose for to make my gradient from my swatches were to dark, and while I can adjust each one's tint to my liking (if the object they were applied to was going to be a solid color) but that doesn't seem to apply to the overall gradient.
I hope that makes sense, I know that this was something that was able to be accomplished in quark and was wondering if I can do something similar.

If you double click your gradient swatch (after adding it to the swatches)
Then click a colour stop in the gradient, and then change the drop down menu to CMYK (or rgb)
And you can alter the percentages there. It's not much use for spot colours but it's a start.
But making tint swatches would be a good start anyway.
At least then when you double click the gradient (in the swatches) to edit it you can choose from CMYK, RGB, LAB, or Swatches and adjust each colour stop to your liking.

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I can't really imagine a business case where it makes sense to clear all data of page items on a page and don't reset the pagination of reports on that page which probably use a page item in there where clause...
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*** New *** Oracle APEX Essentials *** http://essentials.oracleapex.info/
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Enhancement request filed, thanks,
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The question about portlet customization and synchronization

I have a question about portlet customization and synchronization.
When I call
NameValuePersonalizationObject data = (NameValuePersonalizationObject) PortletRendererUtil.getEditData(portletRenderRequest);
portletRenderRequest.setPortletTitle(str);
portletRenderRequest.putString(aKey, aValue);
PortletRendererUtil.submitEditData(portletRenderRequest, data);
Should I make any synchronization myself (use "synchronized" blocks or something else) or this procedure is made thread-safe on the level of the Portal API?

HI Dimitry,
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regards,
Harsha

A question about item "type and release" of source system creation

Hello expert,
I have a question about item "type and release" of source system creation.
As we know,when we create a web servie source system,there will display a pop-up which includes three items as "logical system","source system"and "type and release".
About the item "type and release",when we push "F4" button,there will be three default selections as below:
"ORA 115     Oracle Applications 11i
TLF 205     Tealeaf 2.05B
XPD 020     SAP xPD".
Who can tell me when and how should I use the three selections.
And also I attempted to input the item by some optional letters except the default three selections and it seems that I can input it freely.
Thank you and Best Regards,
Maggie

Hello DMK,
Thank you very much for your answer.It is very helpful for me.
Can I ask you further about it?
I got that it is a semantic description item.
You said the default selections are set by our basis people.Would you like to tell me how should we creat a new value except the default ones for item "type and release"?Only by inputing the value in the item directly?But you see we canot see the new value item we created by ourself when we push "F4" button next time ,is that ok?Or do we have to ask basis people to define one new value item just like the default seletions before we use it.
Also if possible would you like to describe detail about "This becomes important when you are troubleshooting certain issues especially when RFC connection problems."
Thank you and Best Regards,
Maggie
Message was edited by: Maggie

A few questions about the ka790gx and dka790gx

i have a few questions about the ka790gx and dka790gx , how much better is the dka790gx compaired to the ka790gx ? . how much difference does the ACC function make to overclocking etc , i plan on getting a phenom II 940BE or 720BE . i already have the ka790gx so would it be worth building another system using the dka790gx mobo , or should i keep what i already have and just change the cpu ?

It's largely irrelevant what other boards had VRM issues other than the KA790GX - the fact is it died at stock settings. Since there is little cost difference between the more robust DKA790GX (or Platinum if you really need 1394) why bother with the proven weakling? There are other examples around of the KA not having a robust power section. There's no way I would use even a 95W TDP CPU in the KA and absolutely not O/C.....!
As for the credentials of Custom PC, I have generally found their reviews accurate and balanced, and echo my own findings where applicable. If a little too infrequent.
The fact that the KA has such a huge VRM heatsink leads me to my other comments on the Forum, particularly regarding the "fudge" aspect:
"""Henry is spot on - the notion that adding a heatsink to the top of the D2PAK or whatever MOSFETS is effective is virtually worthless. The device's die thermal junction is the tab on the device back - which is always against the PCB pad. The majority of heat is therefore dissipated in to the board, and the fact that the epoxy plastic encapsulation gets hot is simply due to the inability of the heat to be conducted away from the device die via the tab. Not sure when Epoxy become an effective conductor of heat.... Good practice is to increase the size of the PCB pad (or "land" in American) such that the enlarged PCB copper area acts as an adequate heatsink. This is still not as effective as clamping a power device tab to an actual piece of ali or copper, but since the devices used are SMD devices, this is not possible. However, the surface area required to provide sufficient PCB copper area to act as a heatsink for several devices isn't available in the current motherboard layouts. Where industrial SBC designs differ in this respect is to place the VRM MOSFETs on the back of the PCB on very enlarged PCB pads - where real estate for components is not an issue.
Gigabyte's UD3 2oz copper mainboards sound like a good idea, on the face of it. However, without knowing how they have connected the device tabs to where and what remains a mystery. I suspect it is more hype than solution, although there will be some positive effect. From an electrical perspective, having lower resistance connecting whatever to whatever (probably just a 0V plane) is no bad thing.
The way the likes of ASUS sort of get round the problem is to increase the sheer number of MOSFET devices and effectively spread the heat dissipation over a larger physical area. This works to a degree, there is the same amount of heat being dissipated, but over several more square inches. The other advantage of this is that each leg of the VRM circuit passes less current and therefore localised heat is reduced. Remember that as well as absolute peak operating temperature causing reduced component life, thermal cycling stresses the mechanical aspects of components (die wire bonds for example) as well as the solder joints on the board. Keeping components at a relatively constant temperature, even if this is high (but within operating temperature limits), is a means of promoting longevity.
For myself, the first thing I do with a seperate VRM heatsink is take it off and use a quiet fan to blow air on to the VRM area of the PCB - this is where the heat is. This has the added benefit of actively cooling the inductors and capacitors too....
Cooling the epoxy component body is a fudge. If the epoxy (and thus any heatsink plonked on top of it) is running at 60C, the component die is way above that.....
It's better than nothing, but only just."""

Problems between a Wireless Controller and a Switch.

I have a Wireless Controller 4402 connected to one sw2960G.
I configured the controller with LAG and the switch (sw2960G) with etherchanel.
I connected the controller 2 distribution ports to the 2 ports of the switch (configured with etherchanel).
It worked like it should work.
But the problem is like this: if I take one cable that is connected to the switch and unplugged that cable from the switch (if that cable is the one connected to controllers port one) I have connectivity between both machines.
If I plug in the switch the cable connected to controller port one and take the other cable and unplugged that cable from the switch I stop the connectivity between the two machines.
I think that was not supposed to happenâ¦ because the LAG in the controller should put every AP in the second controller's port, and the connectivity between the machines should not end.
Can any one help me?
Can any one tell me what I am doing wrong?
Thanks in advance,
Rui

With LAG enabled in the controller I think I can have only one ap-manager interface.
The LAG will (it is supposed to) do the load balance automatically.
I mean, if one of the interfaces is âdownâ the other will have to coupe with all the AP's.
I should have always connection between the controller and the switch.
The STP of the controller is configured by default (STP Mode = OFF).
In the case of etherchannel load balanceâ¦ I saw the Cisco documentation and I did not saw any thing about that. I think that The LAG as to do that for the controllerâ¦ I'm right about that?
I will see the link that you advisedâ¦
Can you help me?
Thanks,
Rui

Question about view/controller/nib class design

Assume you need to make an application with, let's say, 15 different views in total. There are two extreme design choices you can use to implement the app:
1) Every single view has its own view controller and a nib file. Thus you end up with 15 controller classes and 15 nib files (and possibly a bunch of view classes if any of your views needs to be somehow specialized).
2) You have only one controller which manages all the views, and one nib file from which they are loaded.
AFAIK Apple and many books recommend going purely with option #1. However, going with this often results in needless complexity, large amounts of classes (and nib files) to be managed and complicated class dependencies, especially if some of the views (and thus their controllers) interact with each other or share something (something which would be greatly simplified if all these related views were handled by one single controller class).
Option #2 also usually ends up being very complex. The major problem is that the single controller will often end up being enormous, handling tons of different (and usually unrelated) things (which is just outright bad design). This is seldom a good design, unless your application consists of only a few views which are closely related to each other (and thus it makes sense for one single controller class to handle them).
(Option #2 also breaks the strictest interpretation of the MVC pattern, but that's not really something I'm concerned about. I'm concerned about simple design, not about following a programming pattern to the letter.)
A design somewhere in between the two extremes often seems to be the best approach. However, since I don't have decades of Cocoa programming experience, I would like to hear some opinions about this subject matter from people with more experience on that subject. (I do have object-oriented programming experience, but I have only relatively recently started programming for the iPhone and thus Cocoa and its design patterns are relatively new to me, so I'm still learning.)

Somehow I get the feeling that my question was slightly misunderstood.
I was not asking "which one of these two designs do you think is better, option #1 or option #2?" I already said in my original post that option #2 is bad design (unless your application consists of just one or two views). That's not the issue.
The issue is that from my own experience trying to adhere very strictly to the "every single view must have its own view controller and nib file" often results in needless complexity. Of course this is not always the case, but sometimes you end up having controller classes which perform very similar, if not even the exact same actions, resulting in code repetition. (An OO'ish solution to this problem would be to have a common base class for these view controllers where the common functionality has been grouped, but this often just adds to the overall complexity of the class hierarchy rather than alleviating it.)
As an example, let's assume that you have a set of help screens (for example one help screen for each major feature of the app) and a view where you can select which help view to show. Every one of these views has, for example, a button to immediately exit the help system. If you had one single controller class managing these views, this becomes simpler: The controller can switch between any of the views and the buttons of each view (most of them doing the same things) can call back actions on this controller (eg. to return to the help selection or to exit the help screen completely). These help screens don't necessarily have any functionality of their own, so it's questionable what do they would need view controllers of their own. These view controllers would basically be empty because there's nothing special for them to do.
View controllers might make it easy to use the navigation controller class, but the navigation controller is suitable mainly for utility apps but often not for things like games. (And if you need animated transitions between views, that can be implemented using the UIView animation features.)
I also have hard time seeing the advantages of adhering strictly to the MVC pattern. The MVC pattern is useful in things like web servers, where MVC adds flexibility. The controller acts as a mediator between the database and the user interface, and it does so in such an abstract way that either one can be easily changed (eg. the "view", which normally outputs HTML, could be easily changed to a different "view" which outputs a PDF or even plain text, all this without having to touch the controller or the model at all). However, I'm not seeing the advantages of the MVC pattern in an iPhone app. It provides a type of class design, but why is it better than some other class design? It's not like the input and output formats of the app need to be changed on the fly (which is one advantage of a well-designed program using the MVC pattern).

Wireless Controller and Microsoft Windows 2008 NPS

Hello Community,
Got a Nightmare project to convert our Wireless over to Windows 2008 NPS for AP, Controller and User Athenication. Anyone have a link to a good Deployment Guide/How To on what is needed for the NPS Server (esp the attributes for AP, Contoller and Users)?
Thank You
Michael

So you are looking to use RADIUS to authenticat the managment users and the actual wireless clients?
RADIUS Managment
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a0080782507.shtml
This goes over what attribute you need to return from the RADIUS server.
For the users:
http://www.cisco.com/en/US/products/ps10315/products_configuration_example09186a0080bfb19a.shtml
HTH,
Steve
Please remember to rate useful posts, and mark questions as answered

Help with wireless controller and VLANs

Hi I'm trying to setup a wireless controller in preparation for a large site go live later this year. I'm struggling to get the controller and the WLAN using the correct VLAN. I want the controller on VLAN 100 and the clients on the WLAN on VLAN 200.
My thought is that I would need a config similar to:
Switchport for wireless controller management port set to trunk VLAN 100 and 200 with no native VLAN set.
The management interface on the controller set to VLAN 100.
A dynamic interface created on VLAN 200.
When setup like this I can get to the controller on its management address but only from VLAN100 not from another VLAN on site or from other sites over the WAN.
I have setup a WLAN which is set to use the dynamic interface on VLAN 200.
I have set the AP to use HREAP and set the native VLAN as 200 and added the dynamic interface into the VLAN mappings
When I connecting a client to the WLAN I get an address on VLAN 100.
The switchport for the AP is set to native VLAN 100 and trunk 200 – this setup works for standalone APs at other sites.
What am I missing?
Also any idea why the management interface address is not routing? The netmask and gateway are set correctly.
Thanks
Paul

Just to add to Steve's post... You only need to create a dynamic interface for vlan 200 if you have ap's also in local mode. If your ap's are in H-REAP/FlexConnect mode, you don't need a dynamic interface for vlan 200.
In you H-REAP/FlexConnect ap, you would set the wlan to vlan mapping there and the switchport configuration would be a trunk allowing vlan 100 (im assuming your native vlan for your ap) and vlan 200. You should see something like the following:
Thanks,
Scott
Help out other by using the rating system and marking answered questions as "Answered"

Question about Time Capsule and Spotlight

I have a simple question about using Time Capsule and Spotlight. Is everything that goes on to Time Capsule indexed into Spotlight? It would appear so but when I search for something (that is still on my hard drive and also backed up to Spotlight) only the local copy appears. Would it be that it finds the closest copy and if that were not there it would point to the Time Capsule copy? Thanks in advance for clarifying this for me.

The automatic setup in the airport utility has changed something.
Is the line down to the TC from the express dotted.. in other words is wireless??
Funny stuff happens.
Please post the screenshots of the 3 pages from the airport utility setup for both airport express and TC..
Make sure wireless is set to off in the express.
Both should be set to dhcp on the internet tab and both set to off bridge mode on the network tab.
So for example the bridge on the network tab.
The summary page can also be a help.
There is a half summary page when you click the item in the airport utility.
There is also a fully summary page, when you hold option key and double click the TC icon for example.

Wireless Controller and security

Hi,
One of our companies is implementing a wireless network . We would like to do the following :
- For conference rooms we would like to have a separate wireless network which has access to internet . All pc's that are not from the company should be able to connect.
PC's that are from the company should not be able to use the wireless connection.This wireless network should be setup without authentication.
- Secure wireless connection : Company pc's should only use the secure wireless network .
I was thinking about using mobility groups but that doesn't block a company pc going to the unsecured wireless network and connect himself .
I'm not an expert in wireless so hopefully I'm not asking a stupid question :-)
gr
wim

You can use vlan override to allow certain ssid's on certain ap's. To block company pc's from accessing the guest network, you can either use a webauth and create a username and password that is only given out to guest and not internal users. Antoher way is to lock down the wireless through group policy.

Question about Wireless Controller and LAG.

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