IBM SC41-5420-04 manual Per physical LAN only

addresses, your server appears as multiple TCP/IP hosts in the same TCP/IP network (Figure 49).

Figure 49. Multihoming - Multiple Hosts, Single Network, Multiple Lines

This scenario can be helpful for backup or to improve performance. However, there is no dynamic backup or performance balance function.

Example: Multiple Hosts on Different Networks over the Same Communications Line

Your server uses one adapter for TCP/IP to attach to a LAN or WAN network. You add multiple TCP/IP interfaces. Each of these TCP/IP interfaces includes an Internet address of different TCP/IP networks. With these multiple Internet addresses, you participate in different TCP/IP networks (Figure 50).

Figure 50. Multihoming - Multiple Hosts, Multiple Networks, Single Line

Imagine a public X.25 network. With this physical network, you can run multiple

TCP/IP networks, for example the company intranet, and connections with

business partners and service providers. For each of these different TCP/IP

networks, your server must configure a unique Internet address.

Running multiple TCP/IP networks within a single local area network (LAN) is

also supported. In most situations, however, one designs a single TCP/IP network

per physical LAN only.

Example: Multiple Hosts on Different Networks over Multiple Communications Lines

Your server uses more than one adapter for TCP/IP to attach to multiple LAN or WAN networks. You add multiple TCP/IP interfaces. At least one interface is assigned to each adapter/line description. Each of these TCP/IP interfaces includes

58OS/400 TCP/IP Configuration and Reference V5R1