IBM SG24-5131-00 manual Network Topology, Single Network

•Design the network topology

•Define a network mask for your site

•Define IP addresses (adapter identifiers) for each node’s service and standby adapters.

•Define a boot address for each service adapter that can be taken over, if you are using IP address takeover or rotating resources.

•Define an alternate hardware address for each service adapter that can have its IP address taken over, if you are using hardware address swapping.

2.4.3.1 Network Topology

The following sections cover topics of network topology.

Single Network

In a single-network setup, each node in the cluster is connected to only one network and has only one service adapter available to clients. In this setup, a service adapter on any of the nodes may fail, and a standby adapter will acquire its IP address. The network itself, however, is a single point of failure. The following figure shows a single-network configuration:

Client

Network

In the single-network setup, each node is connected to one network. Each node has one service adapter and can have none, one, or more standby adapters per public network.

Figure 5. Single-Network Setup

Cluster Planning 35