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tallboy755

Network Looping and Failed DNS

Hello, I am attaching a diagram of my network at my office. I am having problems in "Building B" and "Buiulding B" resolving DNS from the WAP's. My DNS is being handed out by my Domain Controller (192.168.2.6) in Building A. So my DHCP is assigning 192.168.2.6 to all computers as the primary and secondary DNS

Also, I am experiencing problems being able to see certain computers in building B and A from building C.

What is incorrect with this diagram?

All my switches are Dell 24 Port Gigabit switches. I have around 80 computers on the network.

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pablomorales🇺🇸

This may not be a DNS issue but a Windows issue. Please clarify what you mean by " I am experiencing problems being able to see certain computers in building B and A from building C". Do you mean that you can't see them in network places? If so can you ping them using their names or IP addresses?

DanMerk🇺🇸

As a test, are you able to ping the IP address and not their DNS name from building A to C or vise versa?

tallboy755

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I believe it is two separate issues. There are times (only noticed wirelessly) when the network status shows a valid IP address, valid gateway, valid mask, but NO DNS. its almost like the computer cannot reach the DC handing out the DNS. That leads me to the other problem

I am stationed in Building C, there are many times I cannot ping or located via computer name the computers that are in building b and a. Would this be because I have the fiber connectors between the difference buildings coming from the first router in each location? Should they come from the last one creating a chain of sorts?

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pablomorales🇺🇸

Your network topology seems ok. You do not need a loop.

It is possible a DHCP configuration problem. Who is your DHCP configured (who many DHCP servers, scopes, settings)? Did you explicitly set the DNS server in all the DHCP? If not then you should try that. Here is some information on setting DHCP options:

http://technet.microsoft.com/en-us/library/cc958929.aspx

I recommend that you set the DNS option explicitly at the global level on each DHCP server to prevent problems.

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DanMerk🇺🇸

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pablomorales🇺🇸

It is also possible that there is a problem in the connection between B and C. When the problem happens, can you ping from any of the computers in C to any of the computers in A or B?

tallboy755

ASKER

Thanks for all the input. I am going to try and diagnose it from my end a little better here and will post a followup response tomorrow

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Network Management

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Network Management involves issues that are independent of specific hardware or software, including email policies, upgrade planning, backup scheduling and working with managed service providers for Desktop-As-A-Service (DaaS), Software-As-A-Service (SaaS) and the like through the use of tools, coupled with manufacturer standards, best practice guidelines, policies and procedures plus all other relevant documentation. Network management also includes monitoring, alerting and reporting, management reporting, planning for device or service updates, the backup of configurations, the setting of key performance indicators and measures (KPIs/KPMs), associated service level agreements and problem records as part of the IT Service Management (ITSM) framework.