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after power failure no one can access internet or servers. everyone gets 169 address

Posted on 2013-12-30
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Last Modified: 2014-01-14
after a power failure one of my switches was fried. I replaced the switch, however, everyone still cannot access internet or servers.

I cannot ping or telnet into my router or any server

everyone gets a 169 ip address, If i try entering manual information it does not work either

I have called our Isp and they can ping and see the router but say my issue is the first hop (which is connected to the new switch---if I move it to a different one its the same thing)

also wireless does not work

any thoughts??
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Question by:itsup23
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by:Netman66
ID: 39747457
Very possible that your switch was also your DHCP server.

Either reconfigure the switch to be your DHCP server or set it up on your server.
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Author Comment

by:itsup23
ID: 39747470
Yes I did consider that (I didn't set the network up)

However I have no access to any server or the internet only local on my machine
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Expert Comment

by:Netman66
ID: 39747488
Are you onsite?  You will need to log into the console of the server to setup DHCP.

Alternately, you can do it on the switch - what make/model?
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Author Comment

by:itsup23
ID: 39747494
i will try on the server now through the console.

it was a dell powerconnect 2716 and I replaced it with a Dlink DGS-1024D
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Author Comment

by:itsup23
ID: 39747507
servers are all vm machines and plugging in directly to the physical server doesn't allow me to enable one of them as dhcp server
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Expert Comment

by:Netman66
ID: 39747541
Neither switch supports dhcp server functionality.  So your addresses must have come from the router or the server.

Do you know the network range you use there?

As for the VMs, what are you running as the Host OS?  Is it VMware or Hyper-V?
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Expert Comment

by:robertmparten
ID: 39747726
You went from a managed switch to an unmanaged switch, perhaps you have VLANs setup before?

How many DHCP scopes do you have setup in your server?

On your servers, are they on different subnets? If so, perhaps you were sending tagged and untagged traffic to the ESX host and now you're unable to.

What device is doing the routing in your environment? How many IP enabled interfaces are enabled? Are they physical, sub-interface? If sub-interface, what is the dot1q tag associated with them?
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Expert Comment

by:inbox788
ID: 39748393
Try a static IP (i.e. 192.168.1.123 or whatever your subnet is supposed to be)  and see if you can't get access to the LAN. Hardwire the router/gateway number.
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Accepted Solution

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itsup23 earned 0 total points
ID: 39768237
issue was with ISP..All resolved now
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Author Closing Comment

by:itsup23
ID: 39778760
ISP was causing issue
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