Attribute of ntdsConnection object that indicates why (or whether) the KCC shows the connection is useful in the replication topology. Is multiple-valued and has DistName+Binary syntax, where the binary part is an int-size bitfield.
Entry
Value
CN
MS-DS-Replicates-NC-Reason
Ldap-Display-Name
mS-DS-ReplicatesNCReason
Size
Value for binary portion: 0 = NO_REASON,1 = GC_TOPOLOGY, 2 = RING_TOPOLOGY, 4 = MINIMIZE_HOPS_TOPOLOGY, 8 = STALE_SERVERS_TOPOLOGY.
Update Privilege
This value is set by the system.
Update Frequency
Can change in response to changes in the network topology.
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