Bridging network connections - access connection problem

Hi there,
I need to sum up my network connections (wlan, umts, e1000, loopback) to one connetion using a bridge. Unfortunatelly there seems to be a problem with the lenovo sw. After a few minutes connection time, wlan just stops working. I guess it has something to do with the automatic switching of the access connection system if it detects another network. Is there somewhere in the settings an option to allow bridging?
Thank you for any hint.

This sounds like a similiar problem:
http://forums.lenovo.com/t5/T61-and-prior-T-series-ThinkPad/T43-Wireless-LAN-missing/td-p/83212

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Network Connection Problem Since 10.4.6?

It seems before the firmware or even before 10.4.6, I could turn on my mbp, it would connect to the wireless access point and away I would go.
But now, opening a web browser, nothing comes up. I have to disconnect the network connection and reconnect (maybe a couple times) before it will be connected.
I am using a Linksys access point (WRT54G)
Macbook Pro Mac OS X (10.4.6)

I came upon this earlier:
So I reinstalled OS X.4.5 and it fixed the problem BUT I then applied the patch to X.4.6 and the problem came right back.. So, what is the deal, I'll tell you. For some reason, after installing X.4.6 OSX corrupts your saved WPA/WEP password in a cache. So when you initially connect it doesn't work, but after you turn it off, then on again, it fetches the uncorrupt password from the keychain and it works. Want proof? Ok, do this:
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- Click Network
- Highlight AirPort and click Configure
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- Select your access point and click edit
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At this point you should see a crazy corrupt password.. Proof that it is jacked up. Now:
- Exit that window back to the access point list
- Remove your access point with the "-" button
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Bridged network connected to wrong eth

Hi all,
I have an Oracle VM server and Oracle VM Manager with network connectivity but am having trouble getting network connectivity for the guest virtual machines.
On my Oracle VM Server, I have networking going through eth0 - the VM server created a bonded interface bond0 that connects to the active eth0. When I created a virtual machine network in the Oracle VM Manager, I was only given the option of choosing ports eth1, eth3 and eth4 in the "Select Ports to include in your network" so I picked eth1. This resulted in created a bridged network that uses port eth1. The problem is that I currently do not have internet connectivity on port eth1.
The question I have is:
1) Do I need to have at a minimum of 2 NICs on the Oracle VM Server? One for the server management and the other for virtual machines?
2) Why does eth0 not show up as an option when selecting ports for the VM network?
Appreciate any insight on this!!!
Thanks,
Nick

Hi,
To design your network architecture, dont forget to take care about:
- Fault tolerance
- Performance
- Security/Isolation
With Oracle VM Manager you can work with a minimum 1 NIC (all networks on the same interface) but this's not secure.
- if you have two NICs, you can create a network (Virtual Machine) and the second NIC to the other Network (more secure). and if you have a VLAN switch you can add the second NIC to the bond0, and create 5 logical networks (more secure & fault tolerance).
I hope this can help you
Best Regards

Network connectivity problems on a Lenovo ThinkPad T60p

Greetings,
I am having connectivity problems with my Lenovo Thinkpad T60p. And I would really appreciate some help.
I know both ethernet connectivity and WiFi connectivity work because if I boot with different OS, I can access the network. So this is not a hardware problem. It is a software problem...
I have uninstalled the existing Ethernet and Network drivers by removing them from:
1. The Control Pannel -> Add/Remove programs
2. The Control Pannel -> System -> Hardware -> Device Manager
3. The directory level in C:/devices/win/ethernet etc.
I have downloaded the drivers again. Re-installed. Same issues.
I see both card in The Control Pannel -> System -> Hardware -> Device Manager . The Wireless card is
ok. The Ethernet card shows a yellow alert sign.
At boot time I get a message indicating a service cannot be started but the the system logs show no related errors.
As far as wireless, the network card appears, in the Network tab of the Windows Task Manager, but the status
is "Non Operational". I can see the networks around me, but I cannot connect, even when there is no encryption. This might be the first one to fix, since it will give me mobility even if I sacrifice speed and open myself to hacking.
As far as ethernet, I see the network card DOES NOT appear in the Network tab of the Windows Task Manager, but as I mentionned before, I know that there is a problem with that.
I hope someone can help me with this. The only other options I have are re-install the OS, install another one, or take the machine in for service, something I am reluctant to do, as I claim to be an IT professional for 30 years and that I can fix other people´s machines...
Thank you.
Regards,
Jean-Pierre
Solved!
Go to Solution.

Hello,
The ThinkPad T60p (2007-8EU) looks like a decently-configured ThinkPad:
2700(2.33GHz), 1GB RAM, 100GB 7200rpm HD, 14.1in 1400x1050 LCD, 256MB ATI FireGL V5200, CDRW/DVDRW, Intel 802.11abg wireless, Cingular WWAN, Bluetooth/Modem, 1Gb Ether, UltraNav, Sec Chip, FPR, 9c Li-Ion batt, WinXP Pro
The TPM driver is used to communicate with the T60p's integrated security module. You can download the latest version of the device driver from here on Lenovo's support site. Although listed as being for Windows 2000, XP and Vista, I believe it works just fine under Microsoft Windows 7 as well.
My working hypothesis is that removal of the third-party firewall damaged the network settings in Windows. That's a problem that periodically comes up with the various security software packages from different vendors.
What I would suggest at this point is the following:
Check with the third-party firewall vendor to see if they offer a manual uninstallation program to uninstall the software. Download that and run it per their instructions, booting into Safe Mode, if necessary.
When that process is complete, try resetting the network stack by issuing a "NETSH INT IP RESET RESETLOG.TXT" command per Microsoft Knowledgebase Article # 299357 "How to reset Internet Protocol (TCP/IP)". The article is applicable to Microsoft Windows XP SP3 and later.
At this point, you should be free of any services, device drivers, NDIS intermediate drivers, WinSock LSPs or other objects from the third-party firewall software, and all network connections should be restored to their default values.
Regards,
Aryeh Goretsky
I am a volunteer and neither a Lenovo nor a Microsoft employee. • Dexter is a good dog • Dexter je dobrý pes
S230u (3347-4HU) • X220 (4286-CTO) • W510 (4318-CTO) • W530 (2441-4R3) • X100e (3508-CTO) • X120e (0596-CTO) • T61p (6459-CTO) • T43p (2678-H7U) • T42 (2378-R4U) • T23 (2648-LU7)
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Network connection problems, please help!

I have had an iPod Touch (4th generation) for over a year now and it worked fine. Today, something went wrong with my network connection. One moment it says that I'm connected to a network, and a few seconds later it says I'm not connected... Then a few seconds later it's connected again. I have full wifi bars, and it does it throughout my whole house. The wifi symbol keeps going on and off. I tried turning my Verizon Westell Model 6100G Modem off and back on because this normally fixes my wifi connection problems. This didn't work. Then I tried turning my iPod off and back on. This didn't work. I tried turning the wifi off and back on. This didn't work. I tried forgetting my network and signing back in. This didn't work. I also tried resetting the network, and this didn't work either. I'm not having any connection problems with my laptop, it's working fine. It's only my iPod. I'm still able to use the wifi, but for a split second, it will not work. I'm not sure what else to do. It's very annoying! I'm going to see if it does this at other peoples houses with their wifi. Can any one tell me what's wrong and how I should fix it? My only theory is a broken antenna...Please help! Thanks!

I have two things you could try.
1. Plug your iPod into the host computer that which the network is based around because sometimes the network has trouble identifying a device if it has been a while since you plugged it into the computer.
2. Find some way to get your network information (IP address, Subnet Mask, Router, DNS numbers) from another device on the network (e.g. laptop). Then go to Settings > Wi-FI and find your router and tap the blue arrow to the right of the name and tap the tab that says "Static" and enter this information accordingly. Then exit back to the network names menu and re-enter your passcode for your network (assuming you have a passcode)

New logic board and network connection problems

My late 2007 MBP just had a new logic board installed. I have home and work wireless networks that are configured to connect automatically. This always worked flawlessly in the past. My MBP would find the network, connect and all was well. Since I've had the new logic board I'm having issues. The wireless network will be detected but an IP address is not assigned so I can't get on the network or internet. Both my home and work networks were set to assign a specific IP address to my computer. The MAC address detected by the router is correct, at least according to System Preferences.
The only way I can connect is to disable the firewall (Allow all incoming connections). When I do this I connect immediately to the network and everything works as normal. I can even turn the firewall back on and everything will be fine, that is until I leave work and turn the computer on at home. Then I have to go through this again. And then again when I go to work in the morning. I've tried deleting my router profile and resetting from scratch, deleting the network profiles in System Preferences and re-detecting. I don't know what else to try. It's an annoying problem.
Any suggestions?
Thanks.
Kevin

I think I have it fixed. One of the solutions I read about had to do with the 10.5.7 upgrade. I have always installed the smaller upgrades, not the larger "combo" upgrades. One tip suggested installing the full combo upgrade because, among other things, it re-creates two specific files that control how the computer interacts with the network. I installed the combo upgrade last Friday and connected without difficulty to the network at my office this morning. If I connect just as easily when I get home tonight I will consider the problem solved.
Cheers!
Kevin

Network connection problem

This is the error message I get when I'm attempting to order the book I've created, "An error occured while uploading one of your files. Please check your network connection and click Retry to send your file."
My network connection appears to be working fine. Several clicks on retry are unsuccessful.
Any ideas?

The best way is to check if you have a firewall software running (Norton Internet Security for example). This has to be disabled. Also in System Preferences disable the Apple Firewall temporarily. Then please check if you have anything like "iClean" or "Spring Cleaning" or such, in short: if there is any Internet Security software running this might prevent your data going out.
Also one thing might be helpful: Back up your complete iPhoto Library folder to an external hard drive using a backup software like "deja Vu" or such. Then delete the original iPhoto Library and restore it from the backup volume. In my case this helped, but I cannot give a guarantee, of course. I hope Apple works on this problem.

Network connectivity problem

hi guys,i am a macbook user & i am using micromax data card with this.now i am facing some problem in connectivity.how to troubleshoot??

Hey aru91,
Thanks for the question. I understand you are experiencing network connectivity issues. We’ll want to troubleshoot the same way as if you were connecting to a Wi-Fi network, using Wireless Diagnostics:
About Wireless Diagnostics
http://support.apple.com/kb/HT5606
Thanks,
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MacBook Pro Network Connectivity Problems

Hi everyone!
I am baffled with an issue connecting my MacBook Pro to the internet. My wifi worked okay until about two or three months ago, when it stopped being able to automatically connect to networks. I simply used my phone to pick up the IP/DNS information, and then entered it manually into network settings. Then, last month, that solution stopped working, and I am unable to connect to any network via wifi or Ethernet, even when manually entering IP information.
I have restarted my laptop and router multiple times. Reset the PRAM. Created a new location. Deleted and added the network again. Deleted network settings in Library. Symptoms are not present on other wifi devices – other laptops and devices connect fine.
I am running OS X 10.8.
Any help would be much appreciated!
Thanks!

If you're still on 10.8, then you need to update to 10.8.5 (which, itself, has some bugs) in order to rule out the bugs found in 10.8 through 10.8.4. Use the Combo updater -> http://support.apple.com/kb/DL1676.
If, after updating, your connection problems persist, call back. There's no guarantee that updating is going to 'fix' your problem.
Clinton

I phone 5 network connection problem

Hi, i have iphone 5 and can connect fine to wifi. up until yesterday i could also connect fine to internet through 3g - this is not the case anymore and the internet only works through wifi! HELP!!!

I'm sorry to hear you are having issues with your Wi-Fi / password.
The information below may help you with this issue. It includes some of the steps you've already taken, but suggests additional steps as well:
iOS: Troubleshooting Wi-Fi networks and connections
Basic troubleshooting
Tap Settings > Wi-Fi and turn Wi-Fi off and then on again.
Verify that you are in range of your Wi-Fi router or base station.
Confirm that your Wi-Fi router and Cable/DSL modem are connected to power and turned on.
Check whether other devices (portable computers, for example) are able to connect to the Wi-Fi network and access the Internet.
Update your Wi-Fi router to the latest firmware. For AirPort Base Stations, refer to this article for information about firmware updates. For third-party Wi-Fi routers, check the manufacturer's website for details on updating your firmware.
Restart your iOS device Hold the On/Off button until "slide to power off" appears. Slide to power off your device. When it is off, press the On/Off button to turn it back on.
If you are still experiencing a Wi-Fi issue after trying the above, choose the symptom below that closely matches your issue:
If you're unable to join a nearby Wi-Fi network
Try restarting your Wi-Fi router by turning it off and then on again.
Note: If your ISP also provides cable or phone service, check with them before attempting this step to avoid interruption of service.
When joining an 802.11n Wi-Fi network, ensure that your router is properly configured. See this article for more information.
Reset network settings by tapping Settings > General > Reset > Reset Network Settings.
Note: This will reset all network settings, including passwords, VPN, and APN settings.
If you are using a Wi-Fi router at home, refer to your user manual/documentation to assist you with some of these suggestions.
Check the manufacturer's website for firmware or software updates for your Wi-Fi router.
Check the wireless security option of your Wi-Fi router:
If you are using WEP security and have multiple WEP keys on your Wi-Fi router, try configuring your Wi-Fi router to use only a single WEP key in key index 1.
Consider using WPA or WPA2 instead. WPA and WPA2 encryption protocols are newer, more effective security options for wireless networks than the older WEP protocol.
Temporarily disable wireless encryption or security on the Wi-Fi router to rule out encryption issues.
Disable 40MHz in the 2.4GHz settings on the Wi-Fi router. Mac computers, iPhone, iPad, and iPod touch do not support this mode. Disabling it may reduce interference issues.
Supported Wi-Fi networks vary by iPhone, iPad, iPod touch model (Example: Does my device support 802.11n?). Refer to Tech Specs for detailed information on which standards your device supports.
iOS and OS X: Recommended settings for Wi-Fi routers and access points
Best Regards, Brandon.

[nForce] K7N2G-ILSR network connection problems

My brother's system is as follows:
AthlonXP 2000+
MSI K7N2G-ILSR
2x256 MB Crucial PC2100
Emermax Powersupply
Generic DVD ROM
LG DVD burner
MSI TV @nywhere
WinXP Home SP2
His computer has been working more or less perfectly, although the TV card occasionally causes some trouble. Today, he was no longer able to get on the internet. From both the Network connections and Device Manager screens, his LAN interface is gone. Only the 1394 interface shows up.
So far, I did a system restore to last week, which had no effect. I made sure the BIOS hadn't disabled it for some reason, too, but that isn't the problem. I manually installed the network adapter, and it said that the device could not start, error code 10. The network adapter will not work in Safe Mode with Networking, either. I tried the MS Knowledge base article regarding missing LAN icons, but that article was for situations in which the icons were gone yet everything still functioned, so it didn't really apply. Reinstalling drivers had no effect. I can ping localhost, but that could just be because the 1394 connection can act as an internet connection.
Any ideas? I've not done a repair of Windows on the machine, but I'm not sure that would help. I do have an extra network interface pci card I could put in if it is simply a problem of his onboard connection having died. If I do this, is there a particular PCI slot that I should preferably use to avoid IRQ conflicts?

As far as I know drivers can be installed in SafeMode, but your LAN wont work till in normal.
A repair install is not a bad idea, as Windows is very fond of its own drivers.
LAN and sound problems are often early signs of a PSU near the end. You wouldn't know the specs of the Enermax? I guess it is alright, but you never know.
As the TV-card is problematic, try that one in another slot. Nowadays devices happily share IRQs without problems, but some older devices including older mobos (which is not the case here) were very conservative. ...I'll have to look in my drawer, wait a sec, please. - - --
"The use and sharing of IRQs aren't mentioned in my MSI manual, (due to the APIC function I think), so I had to go to some ASUS manuals. As standards are standards, I believe things can't be to different. If someone has any addings or suggestions please come forward, so I can adjust the table.
*Please note that this is generally speaking and mainly for ASUS boards a few years old!
**Please note that you should not have any sharing with the IDE controller or similar!
***Please note that it is a good thing to have expansion PCI sound cards in slot 3!
****Please note that surprisingly enough it looks like PCI slot 2 would be free for any device, but AGP cards get hot and bigger so it is not a great idea.
IRQ sharing table
PCI 1 shares with PCI slot 5
2 shares with AGP and PCI slot 6, or sometimes with onboard IDE
3 shares not, or sometimes with onboard audio/modem
4 shares with onboard LAN
5 shares PCI slot 1
6 shares with AGP and PCI slot 5
AGP slot shares with PCI slots 5 and 6
USB 1 shares with USB 2, 3 and USB 2.0
2 shares with USB 1, 3 and USB 2.0
3 shares with USB 1, 2 and USB 2.0
USB 2.0 shares with USB 1, 2, and 3
Onboard audio/modemshares not, or sometimes with slot 3
Onboard LAN shares with PCI slot 4
Onboard IDE shares not, or sometimes with PCI slot 2 "

Local Network Connection Problem with SQL Server 2008 R2

Hi,
I have CRM application which uses SQL server 2008. Weird thing is that I have no problems connecting from client machines to the server when using a particular router (via LAN) and when I upgrade the firmware of the same router (A common open source firmware
which is used by many also works perfect apart from mentioned problem) and restart the server, the connection cannot be established. I get Error 40.
When i downgrade the firmware and restart the server, the connection works again.
Please note that I am absolutely not touching any configuration of the server. Also the CRM software allows remote connections from public IPs which this feature works fine with both downgraded and upgraded firmwares.
As for my understanding, the routers do not block ports in LAN connections. So how can I diagnose the reason for this connection problem?

Hi Leony83,
Please also help to check Windows Event Log information regarding this issue, so that we can do further investigation. In additin, here is the general steps to troubleshoot SQL Server Error 40 issue. Please see:
SQL SERVER – Fix : Error : 40 – could not open a connection to SQL server – Fix Connection Problems of SQL Server:
http://blog.sqlauthority.com/2008/08/24/sql-server-fix-error-40-could-not-open-a-connection-to-sql-server-fix-connection-problems-of-sql-server/
Hope this helps.
Regards,
Elvis Long
TechNet Community Support

Bridging network connections - access connection problem

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