DEBUG for roaming?

Hi!
I'm currently making some roaming tests with a 2504 WLC and two 2602 APs. I'm just a beginner with wireless technologies.
Which DEBUG commands can be used on the controller to watch the roaming process information?
I've tried the debug client {client MAC} but it seems that the client disassociates from one AP and then reassociates with the other.
Which subject should I read to learn about this process?
Thanks.

First is there any particular goal you have by doing this? So as a beginner let's see if I can help you understand a couple things, I will try to keep it high-level.
So there are several types of roaming, there is Layer 2 intra-controller, and inter-controller and layer 3 roaming. When 2 AP's are connected to the same controller this is called intra-controller roaming. When AP's are connected to multiple controllers in a Mobility Group or Domain, that's inter-controller roaming. When a user roams in all of these scenario's, much of the decision to do so is typically on the client i.e. the WLAN client is always looking for a better signal strength (RSSI) for the same SSID he is connected to. The roaming thresholds vary by client, but generally if a client see's an AP with a much better RSSI, the client will attempt to roam. There are new features which the infrastructure can help the client make better decisions but that's more time than i have.
To visualize this process simply, you can force this to occur on your WLC, by starting a continuous ping on your client ping 8.8.8.8 -t, then go to your WLC and disable the AP the client is currently associated to. You can see which AP the client is connected to on the monitor page-clients and viewing client properties.
If you want to witness the client roaming the best way is above, if you want to see it on a debug try the following.
(Cisco Controller) >debug client 00:00:00:00:00:00 - your clients MAC
(Cisco Controller) >debug mobility handoff enable
(Cisco Controller) >show debug - verify the debug's are running
If this doesn't work let me know, good luck!
~Please rate helpful post~

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Hello Everybody,
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Best regards,
Eric
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]

[SOLVED] Enabling debug for ath9k in compat-drivers-patched from AUR

Wireless card: TP-LINK TL-WN951N. lspci says that it is an Atheros AR5416 adapter [AR5008].
Some background: I'm having the same issues as the OP in this thread, which references this bug report. The problem is that I get a 2000 ms ping every 30 seconds. So 2 seconds of inactivity every 30 seconds. I have the same wireless PCI card, as well. I need to fix this, because it's making online gaming impossible. I should also note that the card is working just fine in Windows 8, however. I am using net-auto-wireless. I have tried using wicd, enabling ath9k's nohwcrypt option, toggling the card's power save, installing the latest compat-drivers-patched from the AUR, toggling different settings in my motherboard's BIOS, and removing the antennae from the card. But nothing has made a significant difference.
I think I'm really close now. I just have to disable ANI. But in order to do that, it seems that I need to enable debugging for ath9k. But this means that I need to either recompile a custom kernel, or somehow enable debug for ath9k in compat-drivers-patched from the AUR. I'd prefer the latter, as that means that I will have a more bleeding-edge driver. That, and I won't have to touch the kernel as much. What I want is described on this page. But it seems too complicated to me. Please let me explain.
I've installed things from the AUR before, as mentioned above, and have properly configured my makepkg.conf for my system. So I'd like to use the CFLAGS and such that I've set. I don't understand how everything works in the PKGBUILD; I don't have much experience with sed and awk and regular expressions, and haven't done much shell scripting at all. It seems that at some point in the PKGBUILD, I need to enable debugging for ath9k before it is compiled. Apparently on the last page I linked to, I need to add:
export CONFIG_ATH_DEBUG=y
export CONFIG_ATH9K_DEBUG=y
export CONFIG_ATH9K_DEBUGFS=y
to some config.mk file. I can only get access to the config.mk file after I install the package with pacman. I've tried adding those lines to my /etc/profile file, and checked, after a reboot, with "set", that those variables are indeed set. But the thing is, with these variables set in /etc/profile, when I run makepkg, makepkg fails with an error 2. I tried again and got the same error. I removed those lines from my /etc/profile, rebooted, tried makepkg again, and everything worked. So putting those lines in my /etc/profile is not the solution, and I feel like I'm doing something very stupid. What am I doing wrong?
I should also note that I've tried to read the wiki page on compiling a custom kernel using ABS, but it seems to just say "get your custom configuration files" and then just continue (so it assumes that I should already be familiar with the configuration part). The PKGBUILD and Creating Packages wiki pages also seem to be a little... too advanced for me at this point in time.
So how do I enable debugging for ath9k in compat-drivers-patched from the AUR? I'd prefer to stick with only editing the PKGBUILD and using makepkg, if possible.
I've really tried to search the web and the arch forums on how to fix this problem myself, but alas, it seems that I need help this time. I greatly appreciate your time for reading my long post.
UPDATE:
I've made a lot of progress. I ended up removing the AUR package with pacman by invoking "pacman -Rsn compat-drivers-patched".
Instructions for [almost] success: First, download compat-drivers-patched from AUR. Then move it to the "builds" directory (or "local", if using ABS). Extract the tarball. After the new directory is created, cd into it. Now here's the important part: run
$ makepkg -so
Then cd into src, cd into the directory inside src, then edit the config.mk file. Make sure these lines are uncommented (or created, if not already there):
export CONFIG_CFG80211_DEBUGFS=y
export CONFIG_MAC80211_DEBUGFS=y
export CONFIG_ATH_DEBUG=y
export CONFIG_ATH9K_DEBUG=y
export CONFIG_ATH9K_DEBUGFS=y
(source)
Now run "cd ../.." to go back up two directories. Now run:
$ makepkg -e
# pacman -U <file that was produced>
And I ran "mkinitcpio -p linux" just in case, but I'm not sure if that is necessary at all. I'm... not touching the kernel, right?
Now I ran:
echo 1 > /sys/kernel/debug/ieee80211/phy0/ath9k/disable_ani
But bash would say that the file or directory doesn't exist. Even if I prepend it with "sudo", I get the same results. I was only able to get the command to work if I logged in as root. I even put the line in my /etc/profile. The 2000 ms ping every 30 seconds is now GONE. HOWEVER! If I reboot and log in as a normal user, the problem is there again. If I reboot and log in as root, the problem is gone. If I then log out and then log back in as a normal user, the problem does not come back.
So really, I can avoid the problem if I first log in as root, log out, and then log back in as a normal user. But this is a great inconvenience. I would much prefer if I could just log in as a normal user right after boot, and have everything working.
Now, how do I get the command to automatically run at boot as root (without me having to log in as root), and work?
UPDATE 2:
I got it working. Putting the line in /etc/profile is not the solution. I created a custom systemd .service file.
Put this into /etc/systemd/service (name it "disable_ani.service"):
EDIT: Wow. I made a glaring typo here. It should be /etc/systemd/system/disable_ani.service
[Unit]
Description=disable_ani
[Service]
Type=oneshot
ExecStart=/bin/sh -c "echo 1 > /sys/kernel/debug/ieee80211/phy0/ath9k/disable_ani"
[Install]
WantedBy=multi-user.target
Then make sure to "sudo chmod 755 /etc/systemd/service/disable_ani.service", since root owns this file.
Then run "sudo systemctl enable disable_ani.service".
EDIT: It has been brought to my attention that there is a much simpler way than creating a custom service.
Using a tmpfile:
/etc/tmpfiles.d/disable_ani.conf
w /sys/kernel/debug/ieee80211/phy0/ath9k/disable_ani - - - - 1
Done.
Now ANI is persistently disabled between boots, even if I log in as a normal user right after boot.
Thanks for reading.
Last edited by vyu223 (2013-03-12 10:20:19)

So zsh is telling you that the command didn't work, since it claims that there is no such file or directory. I had a lot of trouble with getting the echo command to work, as well. I found that if out of these lines:
export CONFIG_CFG80211_DEBUGFS=y
export CONFIG_MAC80211_DEBUGFS=y
export CONFIG_ATH_DEBUG=y
export CONFIG_ATH9K_DEBUG=y
export CONFIG_ATH9K_DEBUGFS=y
If the first and second line above were not uncommented in the config.mk file, I couldn't leave the last line above uncommented as well, or else makepkg would fail and give me an error. So originally I had only the 3rd and 4th lines above uncommented/inserted in my config.mk. With that configuration, I could not get the echo command to work, no matter what. Have you uncommented or inserted all of the above 5 lines into your config.mk?
After making sure all of the above 5 lines were in my config.mk, the echo command still didn't work, even if I preceded the command with sudo, or entered a su session. Bash would tell me that there was no such file or directory. I found that if I actually logged out of my normal user, and then logged back into the computer as root, the command would work. If your shell does not give you any feedback (particularly, "no such file or directory"), then the command worked. In order to get the command to run every time the computer boots, I used a systemd service, so that the command is issued as root. For some reason, it doesn't work if you put the command into /etc/profile.
Oh, and it would probably be helpful to mention that for the compat-drivers-patched package from the AUR, the PKGBUILD checks to see what your _selected_drivers variable is before compilation. If you set _selected_drivers=ath9k, your compile times will be much shorter.

How to disable debugging for a program or FM ?

Hi,
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KIndly regards
Thierry De Longueville

Hi,
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Make sure data roaming and cellular data is turned off. If you don't want to receive calls or SMS then put your phone in airplane mode and reactivate WiFi

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I'm gonna attempt this with a couple of scripts - (one added to login script
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"W_ Prindl" <[email protected]> wrote in message
news:[email protected]...
> Although I use OWS SBE I never use the integrated Simba tools, etc. I
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>
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>
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> Should be possible in a 10 users/10 PCs environment - but that are 100
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>
> BTW I have Zenworks and Groupwise running on the same server in a small
> setup similar to yours.
>
> Only negative thing with Zenworks Configuration Management is, that it
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> core processor PCs have no problem, but older dual cores and single
> cores come really to a halt with the Zenworks Agent.
> --
> W. Prindl
>
>
> Chris wrote:
>
>>Novell support tells me I should be using a dedicated Server for
>>Zenworks This would be a real over kill!
>>
>>So, are there any alternatives to using Zenworks for Roaming profiles?
>>
>>Googeling I see SAMBA can support Roaming Profiles
>>
>>Samba is installed & I created Samba users via SBE Admin but when I
>>select Samba Administration - seems to be no details ie. users,
>>workgroup name etc?
>>
>>Is Novell Samba differently?
>>
>>Is it possible setup Roaming Profiles with Novell Samba?

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1. Enable SMTPS (to avoid the VPN stuff)
2. Configure MS to require authentication for both SMTP and SMTPS for senders who uses @ourdomain.com email address in the envelop. And at the same time, match that envelop sender address with the authenticated user to see if they match.
I have already done point #1. But #2 seems so complicated. Please advice if I am thinking in the correct direction. Is there a simpler way to archieve that?
Any ideas are welcome.
Thanks.
BR,
Py

Hi,
SMTPS is definitely a good idea for roaming users. If you are going to be requiring authentication then you want the authentication details to be encrypted.
2. Configure MS to require authentication for both SMTP and SMTPS for senders who uses @ourdomain.com email address in the envelop. And at the same time, match that envelop sender address with the authenticated user to see if they match.This seems complex to me and is going to cause issues for users who send emails via their ISP's server to your work-place when working from home. Requiring authentication for the SMTPS connection is a good idea and that can be accomplished just by associating the TLS port with the SMTP_SUBMIT service (instead of just SMTP):
[SERVICE=SMTP_SUBMIT]
PORT=587
! Uncomment the following line if you want to support SSL on the alternate
! port 465
TLS_PORT=465
You should also enable the logging of the username used when authenticating by adding the following line to the option.dat file:
LOG_USERNAME=1
That way if there is a user who 'spoofs' their email address, you know who they are (by the username), the IP address they came from and who they were pretending to be. This should act as sufficient deterrent.
Shane.

DEBUG for roaming?

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