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1.5 Prerequisites/Preconditions

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This protocol requires that the DHCP servers in the failover pair support configuration parameters that conform in structure to the Abstract Data Model described in [MS-DHCPM] section 3.1.1.

The two servers are required to have similar values for all of the fields of the shared DHCPv4FailoverRelationship ADM element (see [MS-DHCPM] section 3.1.1.33) except for the serverType field which is set to values corresponding to the role of the current DHCP server in the relationship.

DHCPv4 scopes configured in the pScopes field of the DHCPv4FailoverRelationship ADM element are required to correspond to DHCPv4Scope objects ([MS-DHCPM] section 3.1.1.2) configured on either DHCP server. The DHCPv4Scope objects configured on the two DHCP servers, and all constituent elements are required to have the same values for all fields.