Windows Server / AD - seperate 1GBit / 10GBit Subnet for Clients

Andreas Schnederle-Wagner 0 Reputation points
2023-01-24T08:53:54.41+00:00

Hello,

We have in the company the scenario that about 50% of the PCs access our Windows Servers (all Active Directory) over 10GBit, the remaining 50% still over 1GBit.

To be able to use the full performance of 10GBit we would like to put these PCs into a separate VLAN which we configure with JUMBO FRAMES.

However, we are unsure how this would affect DNS resolution because of the 2 different subnets.

The Windows servers (AD, Storage, Exchange, ...) would need IPs in both subnets in this case. How does the AD behave here? Would it return both IPs when we query a hostname? Then we would have problems if a 1GBit subnet PC gets the 10GBit subnet IP and vice versa.

Or can we fix this on the corresponding VLANs/subnets which IPs the AD/DNS returns?

I hope you can help me here on the right track.

Thanks a lot, best regards from Tirol

Andreas

Windows Server 2019
Windows Server 2019
A Microsoft server operating system that supports enterprise-level management updated to data storage.
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Active Directory
Active Directory
A set of directory-based technologies included in Windows Server.
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Windows 10 Network
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Network: A group of devices that communicate either wirelessly or via a physical connection.
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  1. Thameur-BOURBITA 28,546 Reputation points
    2023-01-24T09:39:17.82+00:00

    Hi

    If you want split VLAN , you should configure VLAN routing. In this case each server will need only one IP to communicate with other VLAN.

    Without VLAN routing , you will have conflict on DNS record for domain controller and the client can have a wrong domain controller IP from DNS.

    Please don't forget to mark helpful answer as accepted

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