Siemens V4.0 manual Node Multi-Node, Node Hybrid Node

Implementing WINS Name Resolution Services

In this environment, when CLIENT_PC1 wants to communicate with CLIENT_PC2, it queries the WINS server for the address of CLIENT_PC2. Upon receipt of the address, it goes directly to CLIENT_PC2 without broadcasting. Because the name queries go directly to the WINS server, p-node avoids loading the network with broadcasts. Because broad- casts are not used and because the address is received directly, computers can span routers.

The most significant problem with the p-node mode is the following:

●If the WINS server is down, computers that rely on the WINS server to resolve addresses cannot get to any other systems on the network.

●All computers must be configured to know the address of the WINS server.

M-Node (Multi-Node)

The m-node mode was created primarily to solve the problems associated with b-node and p-node. In an m-node environment, a computer first attempts registration and resolution using b-node. If that fails, it switches to p-node.

The advantages of the m-node mode are the following:

●The m-node can cross routers.

●Because the b-node always is tried first, computers on the same side of a router continue to operate as usual if the WINS server is down.

●In theory, it should increase local area network (LAN) performance.

H-Node (Hybrid Node)

The h-node mode solves the most significant problems associated with broadcast messages and with routed-environment operations. It is a combination of b-node and p-node that uses broadcast messages as a last effort. The h-node mode does more than change the order for using b-node and p-node. If the WINS server is down — making broadcast messages a necessity — the computer continues to poll the WINS server. When the WINS server can be reached again, the system returns to p-node.

Because p-node is used first, no broadcast messages are generated if the WINS server is running, and computers can be on opposite sides of routers. If the WINS server is down, b-node is used allowing computers on the same side of a router to continue to operate as usual.

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For Microsoft TCP/IP users who configure TCP/IP manually, h-node is used by default unless the user does not specify addresses for WINS servers when configuring TCP/IP.

Product Manual U7613-J-Z815-6-76