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DC Issues

post #1 of 6
Thread Starter 
Seems that I've got an issue with a DC that's off site that I've been told hasn't been working properly for some time. It's not communicating with my primary DC, when I go to view it on my Primary DC it says it's possibly a DNS issue. From more questioning someone believes that the old DC that was replaced wasn't demoted before it was replaced with the one that's having issues right now. Anyone have any ideas what I can do to narrow down what the problem is? Maybe dcdiag? Thanks everyone.

@tycoonbob - any ideas?
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Sandy Rigster
(16 items)
 
Little Big Rig
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CPUMotherboardGraphicsRAM
Intel Core i7 2600K @ 4.4 P8P67 LE Radeon R9 290 8gb 1600mhz  
Hard DriveHard DriveOSMonitor
WD Caviar Black Crucial M4  Windows 8.1 Pro x64 Asus 24" VS248H-P 
MonitorMonitorKeyboardPower
19" Hanspree 19" Hanspree Logitech G510 Cooler Master eXtreme Power Plus 700-Watt 
Mouse
Logitech G700 / Razer Death Adder 2013 
CPUGraphicsRAMOS
Intel Core 2 Quad Q6600 Ati Radeon HD 4770 OCZ Gold DDR2 800 Windows Vista Ultimate x64 
Monitor
Philips 42" LCD TV 2ms 120hz 
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post #2 of 6
Quote:
Originally Posted by lostsurfer View Post

Seems that I've got an issue with a DC that's off site that I've been told hasn't been working properly for some time. It's not communicating with my primary DC, when I go to view it on my Primary DC it says it's possibly a DNS issue. From more questioning someone believes that the old DC that was replaced wasn't demoted before it was replaced with the one that's having issues right now. Anyone have any ideas what I can do to narrow down what the problem is? Maybe dcdiag? Thanks everyone.

@tycoonbob - any ideas?

If the old one wasn't demoted and was replaced with this one, if they have the same name you will likely have issues. The best solution (most thorough) would be to demote and remove the current DC and cleanup AD via ADSI Edit.

Can you ping the remote DC from your primary DC, and vice versa by IP? What about by name? That right there should let you know if you have DNS issues.

What does repadmin show for replication? (i.e., run "repadmin /showrepl" from your primary DC)

What domain and forest level is your domain, and what OS are they running? Full DCs or RODCs?
post #3 of 6
Thread Starter 
Yea so come to find it wasn't demoted before it was replaced and it has the same name as the old dc that was replaced. I can ping the remote DC from the primary DC and visa versa. Looking at the DNS the problem DC is showing up properly as it should. Looking at DNS on the primary DC shows that it can't communicate with the remote DC. Also looks like the remote DC has a DNS role as well. I'll get back to you on the repadmin. And to my knowledge all running full DCs.

Yea and for replication, it's not showing that DC as an inbound neighbor.
Sandy Rigster
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CPUMotherboardGraphicsRAM
Intel Core i7 2600K @ 4.4 P8P67 LE Radeon R9 290 8gb 1600mhz  
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WD Caviar Black Crucial M4  Windows 8.1 Pro x64 Asus 24" VS248H-P 
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Sandy Rigster
(16 items)
 
Little Big Rig
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CPUMotherboardGraphicsRAM
Intel Core i7 2600K @ 4.4 P8P67 LE Radeon R9 290 8gb 1600mhz  
Hard DriveHard DriveOSMonitor
WD Caviar Black Crucial M4  Windows 8.1 Pro x64 Asus 24" VS248H-P 
MonitorMonitorKeyboardPower
19" Hanspree 19" Hanspree Logitech G510 Cooler Master eXtreme Power Plus 700-Watt 
Mouse
Logitech G700 / Razer Death Adder 2013 
CPUGraphicsRAMOS
Intel Core 2 Quad Q6600 Ati Radeon HD 4770 OCZ Gold DDR2 800 Windows Vista Ultimate x64 
Monitor
Philips 42" LCD TV 2ms 120hz 
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post #4 of 6
Quote:
Originally Posted by lostsurfer View Post

Yea so come to find it wasn't demoted before it was replaced and it has the same name as the old dc that was replaced. I can ping the remote DC from the primary DC and visa versa. Looking at the DNS the problem DC is showing up properly as it should. Looking at DNS on the primary DC shows that it can't communicate with the remote DC. Also looks like the remote DC has a DNS role as well. I'll get back to you on the repadmin. And to my knowledge all running full DCs.

Yea and for replication, it's not showing that DC as an inbound neighbor.

Yeah, you could probably manually fix it, but I would recommend (if it's feasible) to dcpromo it down (demote), remove the AD DS and DNS roles, reboot that server, clean up AD and ADSI edit, then reinstall AD DS and DNS on that remote DC. As long as you cleaned up those old records in ADSI Edit, that will fix whatever problems you are having.
post #5 of 6
Thread Starter 
Sounds good, I'll get on it, thanks!
Sandy Rigster
(16 items)
 
Little Big Rig
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CPUMotherboardGraphicsRAM
Intel Core i7 2600K @ 4.4 P8P67 LE Radeon R9 290 8gb 1600mhz  
Hard DriveHard DriveOSMonitor
WD Caviar Black Crucial M4  Windows 8.1 Pro x64 Asus 24" VS248H-P 
MonitorMonitorKeyboardPower
19" Hanspree 19" Hanspree Logitech G510 Cooler Master eXtreme Power Plus 700-Watt 
Mouse
Logitech G700 / Razer Death Adder 2013 
CPUGraphicsRAMOS
Intel Core 2 Quad Q6600 Ati Radeon HD 4770 OCZ Gold DDR2 800 Windows Vista Ultimate x64 
Monitor
Philips 42" LCD TV 2ms 120hz 
  hide details  
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Sandy Rigster
(16 items)
 
Little Big Rig
(5 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 2600K @ 4.4 P8P67 LE Radeon R9 290 8gb 1600mhz  
Hard DriveHard DriveOSMonitor
WD Caviar Black Crucial M4  Windows 8.1 Pro x64 Asus 24" VS248H-P 
MonitorMonitorKeyboardPower
19" Hanspree 19" Hanspree Logitech G510 Cooler Master eXtreme Power Plus 700-Watt 
Mouse
Logitech G700 / Razer Death Adder 2013 
CPUGraphicsRAMOS
Intel Core 2 Quad Q6600 Ati Radeon HD 4770 OCZ Gold DDR2 800 Windows Vista Ultimate x64 
Monitor
Philips 42" LCD TV 2ms 120hz 
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Reply
post #6 of 6
Thread Starter 
After elevating the domain in prep for the introduction of a 2008 R2 DC, this resolved the issue before I could take the DC down and back up. headscratch.gif
Well now it's just the DNS issue on it I have to work out.
Sandy Rigster
(16 items)
 
Little Big Rig
(5 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 2600K @ 4.4 P8P67 LE Radeon R9 290 8gb 1600mhz  
Hard DriveHard DriveOSMonitor
WD Caviar Black Crucial M4  Windows 8.1 Pro x64 Asus 24" VS248H-P 
MonitorMonitorKeyboardPower
19" Hanspree 19" Hanspree Logitech G510 Cooler Master eXtreme Power Plus 700-Watt 
Mouse
Logitech G700 / Razer Death Adder 2013 
CPUGraphicsRAMOS
Intel Core 2 Quad Q6600 Ati Radeon HD 4770 OCZ Gold DDR2 800 Windows Vista Ultimate x64 
Monitor
Philips 42" LCD TV 2ms 120hz 
  hide details  
Reply
Sandy Rigster
(16 items)
 
Little Big Rig
(5 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 2600K @ 4.4 P8P67 LE Radeon R9 290 8gb 1600mhz  
Hard DriveHard DriveOSMonitor
WD Caviar Black Crucial M4  Windows 8.1 Pro x64 Asus 24" VS248H-P 
MonitorMonitorKeyboardPower
19" Hanspree 19" Hanspree Logitech G510 Cooler Master eXtreme Power Plus 700-Watt 
Mouse
Logitech G700 / Razer Death Adder 2013 
CPUGraphicsRAMOS
Intel Core 2 Quad Q6600 Ati Radeon HD 4770 OCZ Gold DDR2 800 Windows Vista Ultimate x64 
Monitor
Philips 42" LCD TV 2ms 120hz 
  hide details  
Reply
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