Changed server IPs, getting errors.


Recommended Posts

I split my network into multiple VLANs putting all the servers into a VLAN and clients on to a separate VLAN.

 

I have changed the server IPs to reflect this.

 

My main DC is 2008 which I am slowly migrating to a new 2012 r2 server, which is currently the secondary DC.

 

Everything seems OK except from the Group Policy Management Console on the 2012, when loading it says:

 

"The specified domain controller cannot be contacted"

 

I can select the Master manually but then I get a different error:

"The RPC Server was unavailable"

 

Most google results relate to firewall issues, however the Windows Firewall is disabled on both servers.

 

2012 server is a VM.

.. I have also noticed I can't access it remotely, I need to go through Hyper V Manager on the host.

 

Any ideas?
 

Link to comment
https://www.neowin.net/forum/topic/1252694-changed-server-ips-getting-errors/
Share on other sites

And what do you have in your AD.. Why did you split them to different vlans?  And your not firewalling between the segments?  What is doing the routing between your segments?

 

Can you give us details of what is routing and what your segments are?  Do you have dns on both servers?  What does dcdiag say ?  https://technet.microsoft.com/en-us/library/cc731968.aspx

^ Exactly -- think maybe they just changed the address space and running both over the same physical network.  Or did they just say lets use 192.168.0.1-254 for clients and 192.168.1.1-254 for servers in our 192.168.0.0/23 ??  Details will help us help you.

  On 07/04/2015 at 10:43, BudMan said:

And what do you have in your AD.. Why did you split them to different vlans?  And your not firewalling between the segments?  What is doing the routing between your segments?

 

Can you give us details of what is routing and what your segments are?  Do you have dns on both servers?  What does dcdiag say ?  https://technet.microsoft.com/en-us/library/cc731968.aspx

 

Because we are coming away from our local authority network and had it reconfigured as a result.. we now have multiple VLANs: servers, printers, wireless APs, finance, workstations.

 

Firewall was just disabled for testing.

VLAN NAME, IP, ADDRESS RANGE, ROUTER, DEFAULT GATEWAY 
VLAN 80 ROUTING NETWORK 10.83.125.208 /28 10.83.125.209 10.83.125.215 
VLAN 81 
VLAN 82 FINANCE 10.83.121.0 /24   10.83.121.1 
VLAN 83 PRINTERS 10.83.122.0 /24   10.83.122.1 
VLAN 84 SERVERS 10.83.123.0 /24   10.83.123.1 
VLAN 85 WIRELESS AP 10.83.124.0 /24   10.83.124.1 
VLAN 86 WORKSTATIONS 10.83.112.0 /24   10.83.112.1 

Yes DNS is on both servers.

     Starting test: FrsEvent

         There are warning or error events within the last 24 hours after the

         SYSVOL has been shared.  Failing SYSVOL replication problems may cause

         Group Policy problems.


     Starting test: NetLogons

         [WVPS-SCH-SRV] User credentials does not have permission to perform

         this operation.

         The account used for this test must have network logon privileges

         for this machine's domain.

         ......................... WVPS-SCH-SRV failed test NetLogons



    Starting test: Replications

         [Replications Check,WVPS-SCH-SRV] DsReplicaGetInfo(PENDING_OPS, NULL)

         failed, error 0x2105 "Replication access was denied."

         ......................... WVPS-SCH-SRV failed test Replications




      Starting test: Services

            Could not open NTDS Service on WVPS-SCH-SRV, error 0x5

            "Access is denied."

         ......................... WVPS-SCH-SRV failed test Services

Seems like some permission errors? Maybe unrelated to the networking changes? It is strange this only happened after network changes, these errors weren't present previously.

Well you might be getting access denied because of dns problems pointing to old IPs, etc..

 

Validate dns with dcdiag..  As to firewalls - not talking software firewall.. What is actually routing between your segments?  A layer 3 switch?  Router/Firewall distro, hardware router?

As budman stated you are probably missing something, a dns entry on your network adapters possibly.   may need to run a ipconfig /registerdns to force an immediate update to dns. 

 

If you have internet access, I would be more than happy to look at this for you.  open up a teamviewer session (go to teamviewer.com) and pm me the id and password.

  On 07/04/2015 at 12:24, BudMan said:

Well you might be getting access denied because of dns problems pointing to old IPs, etc..

 

Validate dns with dcdiag..  As to firewalls - not talking software firewall.. What is actually routing between your segments?  A layer 3 switch?  Router/Firewall distro, hardware router?

 

Cisco Catalyst 3560 v2

 

  On 07/04/2015 at 12:38, Jared- said:

Can you access other VMs on your Hyper-V host remotely? 

 

Yes they seem ok.. We have 3 VMs on the server, one of them is the domain controller which is the only one I am having trouble from.

 

  On 07/04/2015 at 13:05, sc302 said:

As budman stated you are probably missing something, a dns entry on your network adapters possibly.   may need to run a ipconfig /registerdns to force an immediate update to dns. 

 

If you have internet access, I would be more than happy to look at this for you.  open up a teamviewer session (go to teamviewer.com) and pm me the id and password.

 

I am off site now but will give it a go tomorrow.. If I need help I will send you team view details in PM, thanks for the offer.

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Posts

    • Nvidia announces RTX 5050 desktop graphics card for more affordable next-gen gaming by Taras Buria Today, Nvidia announced a new budget-friendly graphics card for those who cannot afford the RTX 5060 but still want to taste those sweet DLSS4 frames and other benefits of the Blackwell architecture. Meet the RTX 5050, the first 50-tier desktop graphics card since the days of the RTX 3050 from January 2022. The RTX 5050 is a $249 card ($50 cheaper than the RTX 5060), and it will be available in the second half of July, according to Nvidia. It has 8GB of video memory with a 128-bit bus, 2,560 CUDA cores (same as the 8GB RTX 3050), and the latest-generation RT cores (40 TFLOPS) and Tensor cores (421 AI TOPS). Interestingly, this is the only RTX 50-series graphics card with GDDR6 memory—the rest of the lineup utilizes a more modern GDDR7 standard. Despite a notable memory downgrade, the RTX 5050 still supports all the features found in more expensive Blackwell cards. Those include DLSS4 multi-frame generation, 9th-generation NVENC, 6th-generation NVDEC, PCIe Gen5, and more. As for power, TGP is rated for 130W via a single 8-pin power connector. Nvidia also recommends a minimum 550W PSU. RTX 5050 RTX 3050 RX 9060 XT Clocks 2.57GHz 1.77GHz 3.13GHz CUDA 2560 2560 - DLSS DLSS 4 DLSS 2 - Memory 8GB GDDR6 128-bit 8GB GDDR6 128-bit 8GB GDDR6 128-bit Display 3x DisplayPort, 1x HDMI 3x DisplayPort, 1x HDMI 2x DisplayPort, 1x HDMI TGP 130W, 550W PSU, 1x 8-pin connector 130W, 300W PSU, 1x 8-pin connector 150W, 450W PSU 1x 8-pin connector Price $249 $249 $299 Nvidia skipped a 50-tier graphics card in the Ada Lovelace generation (RTX 40 Series). While there is a mobile RTX 4050, the most affordable desktop GPU from the RTX 40 series lineup is the RTX 4060. Now, facing the growing pressure from AMD with its RTX 9000 series GPUs, Nvidia is offering more options at the lower end of the price spectrum. You can find more information about the RTX 5050 on the official Nvidia website.
    • You should probably read the original reddit post... Spoiler, it's just some bs from a low tier tech sub written by a "power user" who fked up thinking he would rather save money and waste time, instead of doing the logical thing... $150 for a disk seems like a good deal compared to wasting hours on troubleshooting...
    • Yeah, I mostly agree, but I am going to take a 50/50 split on this one. Normally I give zero credence to any company who blames an internal component for issues with their product. Even if the component is at fault...who chose to use that component in their product? At the end of the day, companies like Dell are responsible for the product they sell in it entirety, including all components. My reason for giving Dell a portal pass here is that a component as major as the CPU or GPU are not simple commodity. That component alone likely drove the consumer's product choice as much or possibly even more than the Dell brand. Users who might be upset with Dell for a limitation with the Qualcomm chipset should honestly ask themselves, had Dell not offered the product you bought due to limitations such as this, would you have bought an x86 Dell, or would you have bought an Arm laptop from another brand. I am pretty sure that 99% of people buying first edition Arm laptops, bought them for the CPU, not the brand. That means the culpability of CPU limitations is on the user just as much as it is on Dell. Having said all of that, this issue isn't the biggest deal breaker. Can't use Night Light on a 2nd screen. Yeah, I'd be annoyed if my main setup was laptop+screen and that was a feature I wanted to use, but I wouldn't be freaking out either.
    • Was sort of sceptical about the unload page feature , just tried it and it does actually drop memory usage. 22 tabs open(1.65gb Ram) and after unloading Facebook as a test it dropped to 1.2gb
    • Elon Musk doesn't want you to know Tesla's response to the NHTSA's Robotaxi questions by David Uzondu Recently, Tesla's Robotaxi service began operating in Austin, and almost immediately, the company decided it would prefer you didn't see its homework. Before the launch, the National Highway Traffic Safety Administration (NHTSA) sent Tesla a letter with a deadline of June 19th to answer some questions. Now that Tesla has replied, it has requested that the NHTSA withhold the entire response from the public, classifying it as confidential business information. This isn't too surprising, as the company is notoriously secretive about its performance data, especially in areas like Autopilot and Full Self-Driving. Here are a few paraphrased versions of the questions Tesla faced: How will the system handle bad weather or poor visibility? What happens if the system detects that it cannot drive safely? Does it pull over? Will a human be monitoring the cars remotely or in person? Does the system follow any existing industry standards for autonomous driving? When does Tesla plan to let other people operate their own cars as robotaxis? The feds have good reason to ask. On its first day, Tesla's Robotaxi service was caught on video making some questionable moves, including driving in the wrong lane against traffic, as seen below (full video here). The clip was also shared in our community forums, though you'll need a free membership to access the off-topic section. Here's another showing a Robotaxi dropping passengers in the middle of an intersection. For now, the service runs with a human safety driver (likely a Tesla employee) in the passenger seat. Billionaire Dan O'Dowd, a persistent critic of Tesla's software, felt the company's launch was lackluster, and the videos circulating online demonstrate that the technology is years behind competitors like Waymo, which has operated without in-car supervisors since 2019. For its part, NHTSA acknowledged being aware of the widely reported incidents and is in contact with Tesla to get more information. The agency's statement reminded the public that manufacturers self-certify their vehicles' safety, and NHTSA's role is to investigate and act on safety problems after they are on the road: This situation gets even more interesting when you look at the bigger picture. Musk has already been criticized for his role in the Department of Government Efficiency (DOGE), which has led to job cuts at agencies that oversee his companies, including the Federal Aviation Administration (FAA) for SpaceX, the Food and Drug Administration (FDA) for Neuralink, and, of course, NHTSA. This has led some to worry about regulatory capture. As one cynical comment on Electrek's article notes, the official who signed the letter to Tesla, Tanya Topka, Director of NHTSA's Office of Defects Investigation, may have put a target on her back just for trying to hold the company accountable.
  • Recent Achievements

    • First Post
      956400 earned a badge
      First Post
    • Week One Done
      davidfegan earned a badge
      Week One Done
    • First Post
      Ainajohn earned a badge
      First Post
    • Conversation Starter
      sophiaisabella32 earned a badge
      Conversation Starter
    • First Post
      Brett76 earned a badge
      First Post
  • Popular Contributors

    1. 1
      +primortal
      592
    2. 2
      ATLien_0
      226
    3. 3
      Michael Scrip
      171
    4. 4
      +FloatingFatMan
      150
    5. 5
      Xenon
      133
  • Tell a friend

    Love Neowin? Tell a friend!