Lantronix MPS100 EPS Reference Manual - Page 17
LAN Manager
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Concepts LAN Manager 2.3.3 Name Binding Protocol (NBP) NBP is used by AppleTalk to advertise resources, such as printers and fileservers, to the network. Any resource that other users can access will have NBP information that must be communicated to other nodes. The items in the Chooser window reflect the NBP resources on the network. NBP and the Chooser organize resources by three levels: name, type, and zone. Names are arbitrary strings assigned by users, such as Kathy or MyPrinter. Types are generic classes of resources, such as Macintosh IIci and LaserWriter. Zones, mentioned previously, are collections of nodes on the network. Typical Macintosh NBP information might be [Kathy, Macintosh IIci, Accounting] for the name, type, and zone, respectively. A service offered by the Server called MyPrinter that has AppleTalk enabled and that is located in the Engineering zone would have an NBP description of [MyPrinter, LaserWriter, Engineering]. If the LaserWriter resource in the Engineering zone were selected in the Chooser, one of the resources shown would be the MyPrinter service offered by the Server. The NBP type LaserWriter designates a PostScript printer, so nodes printing to printers of type LaserWriter assume that the printer supports PostScript. Care must be taken to attach only PostScript printers to Server services with AppleTalk enabled, and to disable AppleTalk on services that do not support PostScript printers. It is not possible to print to non-PostScript printers (for example, ImageWriters and StyleWriters) from a Macintosh via the Server. 2.4 LAN Manager LAN Manager is based on the NetBIOS protocol. It is used by several PC-based operating systems, notably OS/2, Windows NT, and Windows for Workgroups, although LAN Manager servers have been written for HP and Sun workstations. The Server implements only enough of the NetBIOS protocol stack to provide print services to nodes; no interactive logins are allowed. The Server also implements the straightforward and easy to use DLC printer protocol typically used by HP laser printers. You must select the hardware address of the Server as the target for the print job. DLC operation is only supported under Windows NT. DLC does not provide queueing on the Server, nor does it allow printing to more than one service on the Server. 2.4.1 Networking NetBIOS is not a routable protocol, so the Server can only communicate with local nodes or nodes that are accessible via a gateway capable of bridging the NetBIOS data. LAN Manager node lookups take a text resource name and resolve it into a hardware address. For this reason, node and resource names must be unique on the network, and the Server will print an error message if any configuration that violates this rule is attempted. Note: NetBIOS can be run over TCP/IP, but the Server does not support this mode of operation. 2-3