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Cannot see other subnets on domain after power failure

Posted on 2009-02-13
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Last Modified: 2013-12-27
Hello,
I am not sure if this is a DNS issue,firewall or something else.
I am running Win 2k3 in a mixed 2000/2003 envt. There was a power failure at my job yesterday. I was able to get the servers shutdown before the power ran out on the UPS.
Prior to the power failure we were having a problem wiith our ISP. AT&T said there was a problem with one of their routers and they were working on it. We also have a point to point T-1 between 3 locations. We were all able to access resoures between the 3 locations but nothing else including the internet.
The power came back on last night so I came back in to power on the servers, etc. Everything powered on but I started noticing some problems. DNS was not working. I was getting Event ID 4013, 1054, 1053, 53258, among others.
After doing some research i ended up disabling the NIC in the DC and configuring the 2nd NIC with the same ip. That didn't seem to do anything so I went back to the original. That seemed to resolve my problem....at least part of it. Now DNS is running, we can get to the internet and everything else on our subnet.  However, now i see that i cannot ping or browse to other subnets.
Please help...i'm starting to fall asleep on my keyboard! :)
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Question by:spectragases
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by:jhyiesla
ID: 23632152
You may have already done this, but can you ping another subnet via IP?  If you can, but can't via name, it's probably some DNS thing. Also try doing a tracert by IP and see where it dies.

Have you checked your smartjacks at both ends to see if any red lights on the the T's?  Perhaps routers at other end or your end, if different than one that goes to Internet, need to be reset.
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by:spectragases
ID: 23632466
I have tried to ping by ip address with no luck. I tried a tracert to the same location that i tried to ping and it made 1 hop to our t-1 router but died after that.
I called our point to point T-1 ISP (Verizon) and they are running tests on the line now. Any other suggestions?
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by:jhyiesla
ID: 23632708
I'd say that at the moment either the T-1 router or the t1 line itself looks like the problem.  Verizon should be able to give you some answer on that.
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Author Comment

by:spectragases
ID: 23632846
I just rebooted my DC and now DNS is down again :(
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by:spectragases
ID: 23632883
Ok, I just disabled and re-enabled my NIC and DNS is back up. Not sure if this is hardware or software related now.
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jhyiesla earned 750 total points
ID: 23633173
Yeah... that's an odd one with the DNS... but the other sounds like a T1 issue of some sort.
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Author Comment

by:spectragases
ID: 23634686
Just had the person who setup this network here and he found that it was the router configuration. All of the settings/routes were wiped out when we had the power failure. That was what was affecting DNS.
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by:jhyiesla
ID: 23635656
That makes some sense, except why resetting the server's NIC would appear to fix it... but at least it seems that you got that part working.
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