HP UX SNAplus2 manual

Defining Connectivity Components

Overview

and they must be configured on the adjacent nodes as well as on the SNAplus2 node, so you may need to consult your SNA network planner.

Operating as an APPN Node

If the SNAplus2 node is an end node in an APPN network, the number of links that you need to configure can be greatly reduced. You can configure links to one or more adjacent network nodes and access all nodes in the APPN network using these links. If you want to access other adjacent nodes directly, you can configure links to them too—this is not usually necessary, but it can give better performance. If the adjacent nodes are connected by token ring, Ethernet, or FDDI, direct links can be set up dynamically so you don't need to configure them—just make sure that you configure the network as a connection network when you define the port.

The benefits of APPN networking are always available for 5250 and independent APPC, but they do not apply to 3270, RJE,or LUAunless you use DLUR. (DLUR supports communications between a host and dependent LUs on the local node or on downstream nodes in an APPN network.) You can use DLUR only if your host supports DLUS, so you should consult your SNA network planner if you are interested in using DLUR.

Using 3270, RJE, or LUA on Multiple Nodes

If you are going to use 3270, RJE, or LUA on multiple nodes, you can reduce the number of host links required by using PU concentration. You can use PU concentration to connect non-SNAplus2 nodes, or SNAplus2 nodes in a different domain. If you want to use PU concentration, you need to configure a host link, enable PU concentration, and configure links between the SNAplus2 node and the downstream systems. Traffic between the host and downstream LUs can then use links to the PU concentrator instead of requiring direct links to the host. Unless you already have links between each downstream node and the host, you can avoid additional investments in cabling and link configuration by using PU concentration.

Chapter 5 145