How WINS Resolves Name Conflicts During Replication

• Microsoft Windows NT Server versions 3.5 and 3.51

SUMMARY

How a Windows Internet Name Service (WINS) server entry responds when a conflict occurs varies depending on three different instances:

• State of the entries
• Ownership of the entries
• Addresses of the entries

MORE INFORMATION

Conflict Between 2 Replicas

• If Replica1 and Replica2 are Tombstoned (indicated by a cross in the status field), Replica1 is replaced.
• If Replica1 is Tombstoned and Replica2 is active, Replica1 is replaced.
• If Replica1 is Active and Replica2 is Tombstoned, Replica1 will be kept if:

       - Replica1 and Replica2 come from different WINS servers.
       - If they have the same owner, Replica2 will be kept.
  

• If Replica1 and Replica2 are active, Replica2 will be kept.

Replica with Same or Different IP Address

• If Address1 is Tombstoned or released and Replica1 is Tombstoned, Address1 is replaced.
• If Address1 is Tombstoned or released and Replica1 is active, Address1 is replaced.
• If Address1 is active and Replica1 is Tombstoned, Address1 is kept.
• If Address1 and Replica1 are active, Replica1 will be kept. Address1 will be told to release the name, and Replica1 will increment its version stamp to cause repropogation.

If a Unique Name Conflicts with a Group Name

The Group entry is kept.

If There Is a Conflict Between Two Internet Group Names

• If Group1 is Tombstoned or released and Group2 is Tombstoned, Group1 is replaced.
• If Group1 is Tombstoned or released and Group2 is active, Group1 is replaced.
• If Group1 is active and Group2 is Tombstoned, Group1 is kept.
• If Group1 and Group2 are active, A superset of both groups is maintained.

If a Multihomed Record Conflicts

• If a multihomed replica clashes with a tombstoned or released database entry, the entry in the database is replaced with the replica.
• If a tombstoned multihomed replica conflicts with an active entry with the same owner, the entry is replaced. However, if the active entry is owned by a different owner, then it is not replaced.
• If an active multihomed entry conflicts with an active unique/multihomed replica in the same database, it is replaced. If the owner is different, it is not replaced.