IBM SG24-5131-00 manual Slip Socc, Special Network Considerations

•FDDI

•SP Switch

•SLIP

•SOCC

•Token-Ring

As an independent, layered component of AIX, the HACMP for AIX software works with most TCP/IP-based networks. HACMP for AIX has been tested with standard Ethernet interfaces (en*) but not with IEEE 802.3 Ethernet interfaces (et*), where * reflects the interface number. HACMP for AIX also has been tested with Token-Ring and Fiber Distributed Data Interchange (FDDI) networks, with IBM Serial Optical Channel Converter (SOCC), Serial Line Internet Protocol (SLIP), and Asynchronous Transfer Mode (ATM) point-to-point connections.

Note

ATM and SP Switch networks are special cases of point-to-point, private networks that can connect clients

The HACMP for AIX software supports a maximum of 32 networks per cluster and 24 TCP/IP network adapters on each node. These numbers provide a great deal of flexibility in designing a network configuration. The network design affects the degree of system availability in that the more communication paths that connect clustered nodes and clients, the greater the degree of network availability.

2.2.1.2 Special Network Considerations

Each type of interface has different characteristics concerning speed, MAC addresses, ARP, and so on. In case there is a limitation you will have to work around, you need to be aware of the characteristics of the adapters you plan to use. In the next paragraphs, we summarize some of the considerations that are known.

Hardware Address Swapping is one issue. If you enable HACMP to put one address on another adapter, it would need something like a boot and a service address for IPAT, but on the hardware layer. So, in addition to the manufacturers burnt-in address, there has to be an alternate address configured.

The speed of the network can be another issue. Your application may have special network throughput requirements that must be taken into account.

12 IBM Certification Study Guide AIX HACMP