DHCP stopped working for wired clients (possibly due to new Windows 8 machine on network?)
My home office network has always been rock solid but has suddenly stopped allocating DHCP addresses to wired clients (wireless still works). The only thing that has changed has been the introduction of 2 Windows 8.1 laptops for my children over Christmas, and I wonder if these are the cause?
My network set-up is as follows...
I have a fibre broadband connection into the home office which plugs into my Airport Extremes WAN port. I then have a single ethernet cable going from one of the LAN ports on the AE to a gigabit ethernet hub, into which I have 10+ machines. The AE is set to use PPPoE to get the net connection and the network setting is to use DHCP to sign addresses. The IP addresses are assigned to the wired clients, plus a couple of airport expresses, and a number of iPhones, iPads etc. This has all worked fine for a couple of years, and any device just gets an address and works.
At Christmas both my children got Windows 8 laptops (don't ask!). I connected them to the wifi network (served by the Airport Extreme) and they got assigned an IP address correctly. They can browse fine, and also auto-updated to 8.1 at the same time.
I wasn't working in the home office at that time but did notice a few things not connecting and when I did check, none of the wired devices was receiving an IP address. They all come up as self-assigned. Nothing has changed on the network itself, the cables are still plugged in (the machines haven't moved!). I think somewhere on the network a second DHCP server is running, but I cannot see where. The only new thing are the Windows 8 laptops. Could they be the problem?
I've managed to spend some time testing and here is what I found out.
Before doing anything I turned off the two PC laptops to make sure they were not available
I powered down the Airport Extreme and disconnected the ethernet cable in the LAN port
I powered on the Airport Extreme
I then connected my laptop (running 10.10) via a single ethernet cable to one of the LAN ports. The laptop had wifi off.
I checked the network control panel, and I had a valid IP address via DHCP. I checked a couple of websites and was able to view them.
I then unplugged the ethernet cable from my laptop and plugged it into my ethernet switch (keeping the there end in the same LAN port on the AE). No machine on the network was able to get an IP address via DHCP, they all came up self-assigned.
I then unplugged the ethernet cable from the AE LAN port. I unplugged one of the cables from the switch that goes to a second switch on the network and plugged that into the same AE LAN port. All the machines connected to that switch came up self-assigned and won't get an IP address via DHCP.
In summary, if a single machine is wired to the AE it gets a valid IP address via DHCP. If multiple machines are connected they don't.
With the Windows machines turned off, I now thinking they might not be the cause. BUT nothing has changed on the network to make this happen.
Similar Messages
-
DHCP only works for wireless clients on Time Capsule. How to fix?
Hi All,
I have a question concerning the DHCP server on my Time Capsule. I'm posting here because I think you network pros lurking in this forum probably have way more insightful advice than the n00bs in the Time Capsule forum
My DHCP server on the Time Capsule only works for clients connected wirelessly to that specific access point; clients plugged directly into the network via ethernet and through other APs do not receive a DHCP assignment from the Time Capsule.
How can I get the Time Capsule to serve DHCP addresses to EVERYONE on the network, not just clients connected via the Time Capsule?
Thanks,
ChrisI don't know that TC provides that. Switch the TC over to its bridged mode (also known as an Access Point or AP), and run a DHCP Server on Mac OS X Server (fodder for this forum) or a DHCP server on another available device. Less desirable though feasible (so long as the IP address pools are coordinated and non-overlapping with other pools or static addresses), run multiple DHCP servers.
-
The "+" sign which opens NEW TAB has stopped working suddenly. I have to open a new window each time. I tried uninstalling firefox and installing again but the problem still persists. Somebody guide me on this.
Uninstall the Ask toolbar and it should work again. There is a compatibility issue with the Ask toolbar and Firefox that prevents new tabs from being opened.
-
iPhoto would never open up for me when i tried to use it. it would always say that it is unable to work. so i went to the app store and saw that it needed to be updated so i did that. once i opened the new app all of my photos are no where to be found.
once i opened the new app all of my photos are no where to be found.
What was your previous iPhoto version? Did iPhoto prompt you to upgrade the iPhoto Library or did you get any error messages?
And where was your iPhoto library stored? In your Pictures folder or on an external drive? -
Hi, I have an iphone 5 and unfortunately got sat on and is now bent, it worked fine bent for 3 months as the glass did not break, today how ever the screen has stopped working. Is it possible to get hold of another casing and have the electronics changed ?
You didn't look hard enough:
Out-of-Warranty Service
If you own an iPhone that is ineligible for warranty service but is eligible for Out-of-Warranty (OOW) Service, Apple will service your iPhone for the Out-of-Warranty Service fee listed below.
iPhone model
Out-of-Warranty Service
iPhone 5s, iPhone 5c,
iPhone 5
$269
iPhone 4S
$199
iPhone 4, iPhone 3GS,
iPhone 3G, Original iPhone
$149 -
The issue: Outlook to iPhone sync failure – Sync suddenly stopped working for calendar events but continued for contacts and notes. Finally Fixed!!!
SUPPORT TEAM – PLEASE SEE THIS – Complete explanation of cause and correction steps.
The cause: It is now clear what caused this problem. For years I had several “all-day” events in my Outlook calendar (birthdays, anniversaries, etc.). In May 2012 I decided to make some of them one hour events so I could add alerts to remind me of the event. I did this by dragging them in Outlook to the time I wanted and expanding them to the time slot desired and then adding the alarm.
The symptom: Syncing stopped working for the calendar but continued working for contacts and notes. I didn’t realize sync was failing until months later when I missed two very important phone calls, so when I noticed it the cause was not obvious.
The failed attempts: I’m head of a software firm and my calendar sync is a crucial to my business life so I took this on with a vengeance. From a quick look at events in Outlook and the iPhone I could see that the problem started in May 2012. Events before May were in both Outlook and the iPhone but events after May were only one or the other. Unfortunately I had changed several other things at the same time relating to other events so again the cause was not obvious. MANY calls with AppleCare proved them incompetent so my internal IT guys assisted trying many things. We tried a huge number of calendar changes and several versions of iTunes, iPhone OS and Office as well as both iPhone 4 and 5, all without success.
The fix: After 18 months of frustration, MANY hundreds of $ expense and MANY hours of wasted time I saw a blog that had a calendar sync problem and it indicated all day events were related. I changed the display of the Outlook calendar to the list view, added columns so I could see “all day” event check marks as well as times of events, sorted on the “all day” event column to move them to the top, and for all events that were “all day” events AND had a start and end time, I removed recurrence and then added the annual recurrence back…
After I fixed all events that had BOTH “all day” set and had a start/end time, I tried another sync. It synced for the first time in 18 months!
Problem occurred May 2012 – fixed Nov 2013Hi, to remove dummy '_ModGrp' entries, rather than crashing the 'Suppr' key on your keyboard, you can use this basic VBA macro (launched for instance from Excel).
It will recursively remove all '_ModGrp...' folders
Sub RemoveFolders_Click()
Dim oOutlook As Outlook.Application
Set oOutlook = New Outlook.Application
Set objNameSpace = oOutlook.GetNamespace("MAPI")
Call CleanFolders(objNameSpace.Folders)
End Sub
Sub CleanFolders(objFolders As Outlook.Folders)
For i = objFolders.Count To 1 Step -1
If Left(objFolders(i).Name, 7) = "_ModGrp" Then
objFolders.Remove( i )
Else
If Not objFolders(i).Folders Is Nothing Then
Call CleanFolders(objFolders(i).Folders)
End If
End If
Next i
End Sub -
Ethernet suddenly stopped working for no apparent reason
My late 2011 MBP is usually functioning as a desktop with external display and keyboard/trackpad, so I have it connected via ethernet when it's on the desk. However, my connection suddenly stopped working for no apparent reason.......... BUT clearly not a router problem as there's no problem with the wifi connection. System Preferences > Network > Ethernet is telling me:
Status: Connected. Ethernet has a self-assigned IP address and will not be able to connect to the internet.
Dunno how this happened, as to my knowledge I didn't actually do anything to cause this problem, just randomly stopped working. Any solutions much appreciated, thanks :-)Please post a screenshot of the Network preference pane. Be careful not to include any private information.
Start a reply to this message. Click the camera icon in the toolbar of the editing window and select the image file to upload it. You can also include text in the reply. -
My iphone stopped working for no apparent reason??
Help!!!! My Iphone has stopped working for no apparent reason... Anyone else experiencing that kind of problem?!? I have the new I phone 4 S havent even had it a year.
RM: You saved the day for me. I was at the ballgame and lost the use of iphone. So when I got back I first had to remember that other electronics worked and I Googled the question. Your answered of holding down both buttons at the same time worked. But I had to do it several times. I hope you know how much you have helped others with the simple answer first.
I'm ready to resisitate any one now by pushing their buttons simultaneously.
thanks. -
When I used iOS4.3.3 , my phone did not stop working for a while although I can't see in Myanmar font!
Apple has not yet included a Myanmar font in iOS, and there is no way for users to add one. You can search the app store for "myanmar" or "burmese" to see if there are some apps that may be useful for some purposes.
The best place to ask Apple to add new features is
http://www.apple.com/feedback/iphone.html
For the freezing problem with Myanmar language material, see
https://discussions.apple.com/thread/4544080 -
My ipad 3 Bluetooth stops working for several seconds every few minutes
My ipad Bluetooth stops working for a few seconds every few minutes...very annoying. Any solutions?
firefox has become a somewhat of a pig. it is actually funny and i know this problem will soon be cured but.... here was this "anti-IE" thing that came out a while ago saying "we're the fastest browser in the world" and indeed they were. as a 13 year microsoft employee/veteran i was reluctant to try it, but try it i did. that was years ago. now all of a sudden here i am and for the past several months at least, firefox has been pausing every few seconds or so. it is totally annoying and has me researching the cause. i'm a techie/quite computer literate and know how to tweak and configure to get every last ounce of speed out of my system. let me tell you... firefox is no longer the fastest browser on the planet.... they have issues. why? they have a lot of code and maintaining a complex piece of software (they are finding) is not easy. BUT, the problem lies within firefox's code base... i've used the latest version of IE, safari and chrome and neither is suffering from the pausing problem.
how can you repro this problem? go to any webform (gmail, this forum, et al) and start typing... there will be an annoying pause every few seconds. while pausing, firefox pages out to disk, despite there being TONS of physical memory available... AND i have set my system to NO pagefile, yet firefox is paging...
or, go to a long webpage (e.g. ebay and set the search results to 200. then just use your cursor to scroll down the page) and you'll see the same problem.
hurry firefox... fix this annoying problem. i've been a happy and loyal FF user for at least 5 years -
ICloud shared photo stream stopped working for one subscriber
A shared photostream stopped working for one subscriber. Tried resending the invite several times but after the person clicks on the link, it says "stream no longer shared". Have tried alternate emails and no avail. Anyone else have this issue? I tried resending the invite to myself and to a phone number but also having the same issue. No issues uploading to the photostream or any issues for anyone else.
Reassigned email address in contacts from "home" to "iCloud" and that did the trick!
-
My Hotmail watcher has stopped working for the past week or so. I've uninstalled and reinstalled it several different times, but it did not help
Hi,
It appears that the developer has released a newer version of Hotmail Watcher. Version 2.13 located at https://sites.google.com/site/sonthakit/hotmailwatcher. You should try updating it to see if it works then.
From https://addons.mozilla.org/en-us/firefox/addon/hotmail-watcher/<br>
'''IMPORTANT -- I had changed my add-on to self-host. New version had been released at my site. Please install new version''' -
Thunderbolt stop working for some seconds
I have a Macbook PRO Retina 15'' Early 2013 and I have the problem that one of the two thunderbolt stop working for same seconds.
I often use both ports: one for ethernet and the other for external monitor through DVI.
If I am using the ethernet in the problematic port, until a random time (between 10 minutes or 8 hours) my mac disconnects from the network. I have to pull out and in the adapter to restart the connection.
If I am using the DVI adapter, sometime the monitor is seen as disconnected and after 2-3 seconds it is again reconnected.
Can be an hardware problem or only software?
ThanksYes.
Have been added a lot of different other problems: not respond after stop, Wi-Fi and Bluetooth not working or not usable, usb disconnections, kernel panic, sometime is impossible to reboot...
The Apple support has decided to change the mainboard.
I am disappointed on how Apple is managing my problem, because they have told me wrong procedures. They have not proposed to me anything to apologize for the wrong information given... I have ever thought that the customer policy for Apple is different from other company and I was very excited to buy my first macbook.
I have bought a macbook that costs over 2200€ and the only solution is to wait at least 5 working days for repair: I need for work, not for fun...
My old Dell costs less that 1200€ and offers, with the same cost of an Apple care, a repair service in 24 hours and accidental damage assurance.
I hope they can restore the good opinion that I have build in my brain and destroyed in 3 days... -
Hi my abode photoshop cs 5.1 stop working for windows 7
abode photoshop cs5.1 stop working for windows 7 error
I have a subwoofer and 5 speakers (2 for front, 2 for rear, 1 for center)...Philips MMS460 5.1. Connection to the on-board RealTek HD Audio is simple, orange for the subwoofer, green for front and black for rear.I have already tried downloading the latest drivers from the motherboard manufacturers website,I have tried connecting the subwoofer connectors to different jacks (reversed black and green).
I have experimented with the settings in the RealTek HD Audio Manager and Control Panel->Sound windows. Nothing works.
These exact same subwoofer and speakers worked perfectly fine in vISTA Home basic
1. Disconnect the speaker system from the pc rear audio panel
2. Remove the on-board audio using the "Add or Remove Hardware" option in Control Panel
3. Reboot the pc, install the driver. Re-connect the speaker system.
4. Using the Sound applet found in Control Panel, configure the speakers for surround sound
5. Reboot the pc.
And now resume all of that ...i have been on Realtek hd audio manager->Speaker configuration set on 5.1 making the test ...EVERITHING WORKS FINE but ...finally when i open for example WINAMP AND PLAY A SONG ....is only played on front *or stereo..So on what im wrong? -
$LS_COLORS stopped working (for user, not for root)
Good day.
Some time ago, "ls" stopped paying attention to my color settings when coloring output for my user, while still working for root. For both root and my user, I set $LS_COLORS through ~/.bashrc as "eval $(dircolors -b)" but while this works fine for root, it at some point stopped working for my user, simply since the "eval" doesn't seem to work anymore. That is, what could be the reason for the below behavior?
(note: I also have colored ls output without $LS_COLORS; just not the colors that I want, and which root does have).
===
[rene@e600 ~]$ echo $LS_COLORS
[rene@e600 ~]$ dircolors -b
LS_COLORS='rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:';
export LS_COLORS
[rene@e600 ~]$ eval $(dircolors -b)
[rene@e600 ~]$ echo $LS_COLORS
[rene@e600 ~]$
===
bash is 4.2.045-5 (coreutils is 8.21-2)
Regards,
ReneI happens to have the same problem of yours after logging in to Gnome but i didn't test for root.
I've followed what comment #40 says at
https://bugs.launchpad.net/ubuntu/+sour … bug/549727 and the problem
seems to gone.
try removing ~/.gconf/desktop/gnome/peripherals/touchpad ?
Maybe you are looking for
-
Hi, A very helpful postee got to the end of his knowledge level, so I am posting this for you tech guys to sort out. Bit long because I've tried to set it out step by step. Briefly I'm new to iTunes and my laptop has a very small hard drive and is vi
-
"Error In Writing to directory ..." getting the error during SOA 10g
Hi, I am trying to install Oracle SOA suite 10g in windows 7. But during installation it shows the message as below "Error in Writing to Directory C:\Users\Accent.Muthu\Appdata\Local\temp\OraInstall2011-03-03-10-51-53 AM. Please ensure that the direc
-
SetupStateChangeEvent() not working in pageflow
I have a piece of code inside the begin() action like below. This code is working properly with a portlet backing file but a pageflow. I'm using 8.1 SP3. HttpServletRequest request = ScopedServletUtils.getOuterRequest(getRequest()); PortletBackingCon
-
How to perfectly align a texture on the skeleton
Dear all, I need to build a prototype for a Customer in retail sector using the Kinect. The idea is to select for instance a Jean or a tee shirt from a list and the the selected object should fit on top of the camera view picture of the user. Any sam
-
JAAS, EJB, GlassFish2 and session key/id
I use standalone EJB client to connect to GlassFish 2. I use custom login module on Aplication server side and ProgrammaticLogin to enter login and password. I see that every call to any of my remote methods is resulted in sending my login and passwo