How to Master DHCP? | Part5, How to Configure DHCP Split-Scope?

#dhcpServer #dhcpserver2022 #SplitScope #dhcpOptions #Server2022 #PowerShell #dhcpPowerShell

Split Scope
DHCP is a crucial service in networks that use it. If the DHCP server fails to respond to client requests, clients can’t communicate on the network. Microsoft offers different methods to provide high availability for DHCP, Solutions like:
• DHCP Split scopes
• DHCP failover
• DHCP Server Cluster
• Hot standby
Using a DHCP server cluster requires a complex network setup, including shared storage for the DHCP database.
This method works well, but setup and configuration can be difficult, and the shared storage can be a single point of failure. The hot standby method consists of two DHCP servers configured with identical scopes and options. If the primary DHCP server fails, an administrator must manually restore the DHCP database from backup to the standby server, which might not have the most recent lease data.

DHCP Split Scopes
A split scope is a fault-tolerant DHCP configuration in which two DHCP servers share the same scope information, allowing both servers to offer DHCP services to clients. One server is configured as the primary DHCP server and the other as the secondary. In most cases, the secondary server leases addresses only if the primary server is unavailable.

Note:
If you’re using reservations, you need to create them manually on both servers so that either server can offer reserved addresses; the split scope function doesn’t replicate reservations.

One problem with split scopes is that if one DHCP server fails, the lease information it stores is lost. In addition, because the second server has only a portion of the IP addresses available to lease, it could run out of IP addresses before the failed server is back up and running.

⌚ Timestamps:
00:00 Intro
01:09 What is Split Scope
02:22 Create DHCP Split Scope
04:47 Important Notes

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