Tecra A8 - MAC address lost

Hi.
One of computers in our LAN - notebook *Toshiba Tecra A8 - had lost MAC address after a storm*. Now every time after restart, MAC address is changing (drav lots) - for example: b1:81:b1:81:b1:81 or af:81:af:81:af:81 itp.
How can I fix it ?
Does manufacturer place somewhere at public serwer soft to fix / reflash right MAC adress ?

Means "after a storm" that the machine was strucked by a lightning? If so, then I would send the machine to a repair center because you cannot simply reflash something to bring the MAC address back.
You could try it with a BIOS update but I dispute that it could fix that issue if the ROM was damaged...
Greets

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Sync between MacBookPro and iPhone 3G does not sync properly. Calendars duplicate events but worse is that only contacts from Address book from letter T onwards sync. Any contacts on iPhone which are not on Mac are lost during sync.

Sync between MacBookPro and iPhone 3G does not sync properly. Calendars duplicate events but worse is that only contacts from Address book from letter T onwards sync. Any contacts on iPhone which are not on Mac are lost during sync.
Solutions?

No, I never really found an easy solution. I believe it is an issue with some corruption in the iTunes database on the specific device. In my case, both my iPad and iPhone now show duplicate stream songs if viewed through iTunes on my Mac, but they show different songs. A couple years ago I had a similar issue on my iPhone, and Apple support suggested I back up the phone, completely reset it, and then restore it from the backup. It did work, so I imagine it would probably work for my current issues with the iPhone and iPad. But resetting and restoring an iPad or iPhone always makes me a little nervous that something will get lost. When I did reset/restore the iPhone, I do have to say, the restore process was 100% perfect and I did not lose any data at all even though Apple support said I might. If you try to go that route, I would suggest backing the device up both to a computer through iTunes, and to the iCloud so that you have a double backup.
None of this really resolves the issue with how the iTunes databases are becoming corrupted on the apple devices though, so it is very likely to happen again until they fix it. I have been unable to determine if there were any specific actions or conditions which caused the corruption to happen in the first place.
Might be worth another call to Apple support, or dropping in the local Apple store if you have one near by.

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Welcome to the Apple Community.
Unless you have the contacts backed up somewhere, you won't be able to restore them.
You and your son should have your own iCloud accounts then you can keep your own contacts and calendars etc and avoid deleting each others.

[SOLVED] Lost MAC address on network card

It seems that my wired ethernet card has lost its MAC address. Some information/output:
# lspci|grep Ethernet
02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8055 PCI-E Gigabit Ethernet Controller
The card uses the sky2 kernel module
# dmesg|grep sky2
sky2 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
sky2 0000:02:00.0: setting latency timer to 64
sky2 0000:02:00.0: v1.22 addr 0xf7dfc000 irq 16 Yukon-2 EC Ultra rev 2
sky2 eth0: addr 00:00:00:00:00:00
Adding a line
#ifconfig eth0 hw ether <random-address-here>
to the startup-scripts makes it possible to use the nic, but it seems like a very temporary solution.
I don't know what can have caused this. Maybe the winter cold here in Norway erased some part of the nic's ROM?
- Does anybody have any idea how I can remedy this?
- Do I have to send the laptop in for repair to get it restored?
Last edited by kapelrud (2008-12-05 16:35:54)

iBertus wrote:I suppose a driver bug could have corrupted the ROM on the network card. Do you have a Windows install that you can boot into to see if the card is working correctly with those drivers?
Using "ipconfig /all" on windows showed the same zeroed mac address, so I guess the problem isn't (wasn't) linux-specific.
I left the pc in my locker at school last night and when I started it up again this morning the mac had mysteriously returned! Maybe the university leprechaun was bored yesterday.
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First, don't lose faith yet, and don't put undeserved faith in the knowledge and tech savvy of the thief who, probably opportunistically, wound up with your iPad. It may simply be sitting in some other location for a while, much like car thieves park stolen cars known to be equipped with tracking systems, in a secure location for a while to see if someone does track it and show up. Or, it's simply never yet been turned on again. Or, as has happened before, it's been languishing in a forgotten corner of some Lost & Found department.
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You can try the following combination of settings :-
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1] Open the software and go to the option which says "Router Settings"
2] Then click on the option which says "Advanced Settings" which will take you to the router's configuration page.
3] Lower the MTU (Maximum Transmission Unit) from 1500 to 1400 or less (usually found on your routers main/ basic setup page)
4] Then click on Security tab disable SPI Firewall Protection, uncheck Filter Anonymous Internet Requests...
B] If you haven't installed Cisco Connect then you can log on to the router's user interface using it's default IP address in the browser which is 192.168.1.1 and type in 'admin' as the password leaving the user name field blank. This will take you to the router's web interface and then follow steps as mentioned above to make the changes.
Then check the connectivity status...

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Router cannot see Hyper-V Guest MAC address

Greeting,
I have been trying to build a server on Hyper-V, on a host running Windows Server 2012 R2, and a wireless adapter is used.
A virtual switch was created as external, connected to the host's wireless adapter.
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An update to my issue:
Just realized the possible cause: the (freaking) router is dropping inactive machine.
Basically the DHCP issue is not solved, but it doesn't seem to be a cause after all, as long as I manually assign the IP it works, even having the 2 IPs with the same MAC on the ARP table on router. (Host connection drop has to be further investigated).
As I found that the loss of connection actually happens after a while I don't touch the web server on VM, the longer I leave it idle the more likely I cannot connect to it again. The situation is like a prolonged loading when trying to access a website,
where sometimes you can connect after a while, or you never.
What's weird is, if I somehow manage to connect to the idle VM server by multiple attempts, and that after I have restored the connection, I can reconnect to the server from another computer very quickly without any significant loading time.
On some quick searches, I found someone using Linksys router is suffering from a similar situation as I do:
http://serverfault.com/questions/522448/application-request-routing-on-a-hyper-v-guest-intermittently-stops
So what I can try are basically 3 ways
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How can I import iPhone contacts into Mac Address book

I recently purchased a MacBook Pro and am in the process of trying to dump my Windows PC.
All of my important contacts are on my iPhone. How can I get those contacts into my Mac Address Book?
The same question goes for the music (ripped from CD) and my video files that are on my iPhone? The media is not that big of a deal because I can easily transfer it from my PC to my Mac but I assume I am not the only one in the world trying to do this and that Apple would make it very easy for MSFT Windows users to easily migrate to Macs.
I must be an idiot but I don't see any option in iTunes to transfer the data from my iPhone into iTunes and/or the Address Book.
Thanks

The iPhone's primary function is NOT a word processor or a spread sheet analyzer.
I didn't say, nor was I trying to imply ANYTHING of the sort. You should read what I provided again a little slower and in it's entirety, not taking this out of context, which you made into Apples and Oranges.
It IS an iPod, a device designed to store and play music (in addition to being a browser and a phone).
It is a phone, an iPod, and an internet device, which supports transferring iTunes content from iTunes on a single computer ONLY.
Making it difficult to transfer my legal music from my iPhone to my Mac does not make me want to go out and buy more Apple products or Apple software.
Good, then don't - no skin off my back. I couldn't care less if you want to remain a Windows sufferer. All this doesn't come from Apple. Much of it comes from those who OWN the distribution rights for content sold thru the iTunes Store.
All of Apple's commercials imply how easy the user experience is over Windows. Well, in this case, they missed the boat BIG TIME!
Everyone is entitled to their opinion, but let me get this straight. You will likely need to transfer much more than just music from your Windows PC to your Mac and if so, how do you plan on accomplishing this? If you are transferring Word and Excel files, photos, and any other data, you won't be using an iPhone for this, so I don't see the big deal with transferring your iTunes library along with all other data being transferred.
I understand that the iPhone was not designed to be used as a backup. However, you allow the contacts to be merged in but not the music that I legally installed (but didn't purchase from the iTunes store).
I don't allow anything - this is a user to user help forum only.
As I provided in my first post in this thread - the sync process for contact information, calendar events, and bookmarks with an iPhone is bidirectional with the supported application on your computer. This is a sync process by definition of syncing - which is not the same for other data such as iTunes content and photos transferred from your computer to your iPhone.
http://support.apple.com/kb/HT1296
Apple wants to make it difficult unless I purchased the music from iTunes.
No, Apple or really those who own the distribution rights or the copyright holders for content sold thru the iTunes Store wants to make this difficult. Content sold thru the iTunes Store is set up by Apple to be a break even - which is included with the Apple stockholder's report. Apple makes their profit via sales of the iPod and iPhone. The bulk of the iTunes Store revenue goes to those who own the distribution rights or the copyright holders for the content.
In addition, if my hard disk suffered a crash and I lost all my music it just seems stupid not to be able to pull it off my iPhone (yes, I know data should be backed up on a different drive, and mine is, but I am sure a lot of people do not back up their data).
Maintaining a backup of your data is important for this very reason, and for other reasons which is not Apple's responsibility. I believe iTunes includes an occasional warning message to backup your iTunes library (which can be turned off), and iTunes includes an option to transfer content purchased from the iTunes Store from an iPod or iPhone - since the overwhelming majority of this content includes DRM protection required by those who own the distribution rights or the copyright holders.
The iPhone was not designed as an external storage device or as a backup device - end of story. If someone chooses not to maintain a backup, they are playing Russian roulette with their data. Maintaining a backup is important regardless the platform, but even more so when running Windows with constant virus, adware, and spyware concerns.

TC Crashing When Adding a MAC Address

so, every time I try to add my Logitech revue's MAC address to my time capsule it crashes, i have to manually go pull the plug and plug it back in and then all is back to normal.........
totally lost....
afaik, my time capsule has the current firmware.......

wow, can't believe it was a whole year later that i remembered this problem, but, it was some kind of firmware issue with my timecapsule.....
i do appreciate the offer for help though.

Arp aging time on router and mac address aging time on switches set close t

Hi,
appreciate some advice on the following:
what is the benefit of setting arp aging time on router and mac address aging time on switches close to each other?
Thanks,
Christina

Hi,
based on the below output, do you think implementing it will benefit? Thanks.
C2950#sh int fa0/43
FastEthernet0/43 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 000d.5e11.4e2b (bia 000d.5e11.4e2b)
MTU 1500 bytes, BW 100000 Kbit, DLY 1000 usec,
reliability 255/255, txload 7/255, rxload 2/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s
input flow-control is off, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 933000 bits/sec, 149 packets/sec
5 minute output rate 2981000 bits/sec, 263 packets/sec
2819781393 packets input, 3782332886 bytes, 0 no buffer
Received 266693 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
4015025747 packets output, 2328228393 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
C2950#

Need to disable "Block Anonymous Internet Requests" with "Clone MAC address?"

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I think the comment is in this thread
http://forums.linksys.com/linksys/board/message?board.id=Wireless_Routers&message.id=8600

Usually resetting you cable modem will allow you to use a router without cloning the MAC address. Reset modem, power down, plug router into the modem, power up the modem, power up the router and you should be good to go. The popular reason that I know of for unchecking "Block Anonymous Internet Requests" is when you plan to use P2P software like Azureus. Your computer becomes pingable and can be seen on the net.

Hyper-V Failover Clustering MAC Address Question

Hello,
Can someone please explain how MAC address assignment works in a hyper-v cluster? I have a couple machines that need to have a static MAC address assigned and want to know how the cluster handles it when the VM is Live migrated to a new host. Thanks in advance.

Hi ice2921,
Yes, after export and import to another Hyper-V host, the dynamic MAC address of the VM changes
after export and import to another Hyper-V host, the dynamic MAC address of the VM changes, this is by design.
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host as there own MAC address range , this is by design of Hyper V and failover clustering when using Dynamic MAC addresses for VMs.
If you are using 2008R2 Hyper-V failover and you found it often lost the network connection and configuration, please install the hotfix.
Reinstalled the integration services
The network connection of a running Hyper-V virtual machine may be lost under heavy outgoing network traffic on a computer that is running Windows Server 2008 R2 SP1
http://support.microsoft.com/kb/2263829
I’m glad to be of help to you!
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

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Hi All,
Any idea please. Is it possible to control PCs allowed on the network based on MAC address list in NAC? I.e Create a list of MAC addresses for PCs on my network in NAC; then each pc granted network access (passed NAC authentication and remediation) on the network only if its MAC address is in that list.
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Where can I find the Mac Address for my iPod Touch? Is it on the box somewhere? I lost my iPod a while ago, but I was told that if I had the Mac Adress, I would be able to retrace it. Help!

You were told incorrectly. Knowing the MAC address will not help you track your iPod. The only way to track your iPod (and then only under limited specific conditions) is to have turned on Find My iPhone on the iPod before it was lost.

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