Failover is a feature that improves the reliability and availability of DHCP services by creating redundancy between two DHCP servers. This failover mechanism ensures that if one server becomes unavailable, the other can seamlessly take over the DHCP service, minimizing downtime and disruption to network operations.
Micetro can be used to manage failover configurations for the following DHCP servers:
Servers can be configured in Hot standby or Load balancing modes, depending on the server type.
Permissions needed to manage failover
The following permissions and roles are required for effective failover management across ISC DHCP, Kea DHCP, and Microsoft DHCP servers:
To manage failover relationships:
- Permission:
DHCP administrator - Built-in role:
DHCP Administrators (built-in)
To add/remove a scope to a failover relationship:
- Permission bit:
add a scope - Built-in role:
DHCP Administrators (built-in)
To replicate scopes:
- Access bits — one or more of the following:
"Read/write scope options""Edit reservations""Edit address pools""Edit exclusions"
- Built-in roles:
IPAM Administrators (built-in)andDHCP Administrators (built-in)
To replicate all scopes on a server or in a relationship:
- Access bits:
"Administer DHCP servers" - Built-in role:
DHCP Administrators (built-in)