Static mappings are non-dynamic database entries of NetBIOS computer name-to-IP address mappings for computers on the network that are not WINS-enabled or for special groups of network devices.
Use the Static Mappings command on the Mappings menu in WINS Manager to view, add, edit, delete, import or filter static mappings.
Once a static name-to-IP address mapping is entered to the WINS server database, it cannot be challenged or removed except by an administrator who must remove it manually using WINS Manager. All changes made to the WINS server database using WINS Manager take effect immediately.
Important
A DHCP reserved (or static) IP address for a unique name in a multihomed computer overrides an obsolete WINS static mapping if the WINS server advanced configuration option Migration On/Off is checked "on."
Static NetBIOS name mappings can be any of the types listed in the following table.
|
Type option |
Description |
|
Unique |
A unique name that maps to a single IP address. Contrast with multihomed type. |
|
Group |
Also referred to as a "Normal Group." When adding an entry to Group using WINS Manager, you must enter the computer name and IP address. However, the IP addresses of individual members of Group are not stored in the WINS database. Because member addresses are not stored, there is no limit to the number of members that can be added to a Group. Broadcast name packets are used to communicate with Group members. Contrast with Internet group type. |
|
Domain |
A NetBIOS name-to-IP address mapping that has 0x1C as the 16th byte. A domain group stores up to a maximum of 25 addresses for members. For registrations after the 25 th address, WINS overwrites a replica address or, if none is present, it overwrites the oldest registration. |
|
Internet group |
Internet groups are user-defined groups that allow you to classify resources such as printers for easy reference and browsing. The default 16th byte of an Internet group name is set equal to 0x20. An Internet group can store up to a maximum of 25 addresses for members. When you add an Internet group, three unique records are added: InternetGroupName<0x20> InternetGroupName<0x3> InternetGroupName<0x0> This is similar to the domain group. Internet group members can be added as the result of dynamic group registrations. However, a dynamic member does not replace a static member that is added by using WINS Manager or by importing the LMHOSTS file. Contrast with Group type. |
|
Multihomed |
A unique name that can have more than one address. This is used for multihomed computers. The maximum number of addresses that can be registered as multihomed is 25. For registrations after the 25th address, WINS overwrites a replica address or, if none is present, it overwrites the oldest registration. Contrast with Unique type. |
A WINS server can be configured to replicate only domain, Internet, and multihomed group to its replication partners. This is performed by manually changing the Replication Type registry parameter to a value of 1.
This procedure eliminates the replication of information (unique names) that is not needed outside the local domain, while allowing replication of special group information. When a group spans multiple domains that are serviced by other WINS servers, it is desirable to reduce replication traffic and allow WINS clients to obtain the group addresses.
The system reads a specified file and creates static mappings for each computer name and address. If the #DOM keyword is included in a record, an Internet group is created (if not already present) and the address is added to that group.
During the process of importing static mappings, WINS Manager first connects to the server (not WINS) and tries to create temporary files under the C$ share. The C$ share is the root ( / ) share. Generally, the root directory on the UNIX system is "read-only." As a result, no clients — not even administrative clients — can create files under a UNIX system root share. This causes "access denied" errors. Prior to importing static mappings through WINS Manager, you must set the IgnoreUnixPermissions to 1 in the Advanced Server Registry. You do not have to stop and restart the server
Like any database, the Advanced Server WINS server database of address mappings needs to be backed up and cleaned periodically. WINS Manager and the winsadm command provide the tools you need to maintain the database.
This section describes how to view, back up, scavenge (clean), and compact the WINS server database. For information on restoring and moving the WINS database, see Troubleshooting the WINS Server Database.
This section discusses the following topics:
