10.4 - 10.6 migration = lose of network

Ok i have read all manauals and post re the migration of a 10.4->10.6 server but nothing covers the slightly odd issue i've got.
I installed 10.6 server on a top spec (2010) Intel X-Server then used the migration asssistant and took all the info from our 10.4 server. once finished i was unable to connect to the network/internet. I have tried both DHCP and static address on both ports and get nothing.
I know the hardware is fine as i've had the server setup as a stand alone server to have a play before attempting the migration and it worked fine on both ports static and DHCP.
Previous server was set up with an aggregated pair and it has pulled this config over and every time i delete it it just recreates its self.
I have run the combo updater and apple jack and i'm out of ideas, any suggestion appreciated.

Ok things have moved on a bit i got it back on the network by deleting all the network related preferences from the Library\Preferences\System Configuration rebooting and boom its on the network.
I now have a new problem, it now takes all the users that connect about 5-10seconds for it to resolve the name and offer the username and password. Also when using the system admin or work group manager i get the following error message:
+Try to refresh the view (xxx.local/certificates).(KnetworkError)+
If any one can shed any light in this i'd really appreciate it

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Airport loses my network, but not airport extreme signal

Since upgrading to leopard (10.5.1), my wireless network of computers (I am using an imac & mac pro book and a new airport extreme 802.11n base - all of which have worked without problems since networking them 6 months ago), will sometimes not show my own network as a network option in the airport status indicator in the menu bar (this happens sporadically with no apparent regularity). I have 4 bars of airport signal reception and I can even see the networks available around me, but mine will not be there. Usually it will pick it back up if I turn airport off and then reopen it but sometimes I have to restart the whole computer. This doesn't seem to be systemic in that one computer may lose the network while the other is working fine....any ideas. I have seen a lot of postings about wonky airport performance with the new leopard OS, but I couldn't find an answer to this.

Hi, (Sorry this is the first time I've posted on a forum)
I had a similar problem. I had successfully set up a network with 2 window computers, running XP and Vista,and an airport extreme. Works great so long as I don't upgrade the firmware on the basestation to 7.2.1.
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Found the only way to connect to the network was to switch off the basestation, get the network diagnostic on the imac to start searching for any networks, then switch back on the basestation. Worked.
Then I read on the forum about trying different radio channels on the basestation, rather than leaving it on the default setting "automatic". I tried Channel 11 and (I guesss it it Xmas!) it works perfectly.
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You can try the following:
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Cheers folks, new one on me. I have a Mac Mini 2.26Ghz Core 2 Duo. It's running a fully-updated 10.6.8. It's connected via ethernet to an Airport Extreme which is extending an 802.11N network from another Airport Extreme elsewhere which is connected to the router. The network is set with IPv6 *off* and is configured to run over Ethernet normally (this is because a wired-only NAS is connected to the same Airport Extreme as the Mini).
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If I go into the Terminal, I can not only get clear network traffic anywhere I want at the TCP layer, DNS seems to work as well. So the following is true also:
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Applying all firmware/software updates (OS X 10.6.8) - nope.
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Logging out/back in - nope.
Restarting the computer: YES. This works, all three times this has happened (all this week). Serious PITA.
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I still have this issue. About every one hour - two days the DNS layer will stop working and only a restart will fix it.
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I have now found and created the following bash script, to see if this will be a more reliable non-restart fix that killing mDNSResponder in the terminal:
#!/bin/bash
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Is it a best practice to put up a Private Network beetween the nodes in a pool (reserving a few network cards and switch ports for it), to have a dedicated network for the traffic generated e.g. by live migration and/or ocfs2 heartbeat? I was wondering why such setup is generally recommended in other virtualization solutions, but apparently it's not considered strictly necessary in OVM... Why? Are there any docs regarding this? I couldn't find any.
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Hi Roynor,
regarding the physical separation beetween management+hypervisor and the guest VMs, it's now implemented and working...
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Edited by: rlomba on Dec 17, 2009 6:16 AM

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Hello everyone...
I have a hyper-v cluster (3 nodes), and a second stand-alone hyper-v host; all of which is managed by SCVMM 2012 R2. The VMM server, and all hyper-v hosts are connected to a 10gbs private network.
When doing a live migration between nodes in the cluster; everything is being transferred over the 10gbs network.
When doing a live migration between one of the cluster nodes and the stand-alone host, it uses the public LAN.
All machines can ping each other on the 10gps network, so it isn't a connectivity issue. (I am using that network to do backups as well.)
On the stand-alone host, I have "use the following IP subnets" set to the subnet of the private network.
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Hi Sir,
>>I have a hyper-v cluster (3 nodes), and a second stand-alone hyper-v host; all of which is managed by SCVMM 2012 R2. The VMM server, and
all hyper-v hosts are connected to a 10gbs private network.
>>When doing a live migration between one of the cluster nodes and the stand-alone host, it uses the public LAN.
If I understand correctly , you may need to check the link layer between the cluster node's live migrate IP and that stand-alone host's LM IP .
I want to know the detail of the network topology between cluster and stand-alone host because you mentioned "it uses the public lan" .
Best Regards,
Elton Ji
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 Subscriber Support, contact [email protected] .

Whenever I go to settings and about my iphone5c loses the network signal

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