HP UX Auto Port Aggregation (APA) Software manual Server-to-Server with Switch Not Recommended

Figure 3-5 Sample Hot Standby Configuration for High Availability

Run Attn. Fault RemotePower
Primary	HP APA 2-Port Hot
Standby	Standby Link Aggregation
Switch	Switch
or Hub	or Hub

Server-to-Server with Switch (Not Recommended)

Figure 3-6 (page 29) shows a sample server–to–server HP APA link aggregation configuration with a switch between the servers. This configuration will not work as intended for the following reasons:

•The switch nullifies any load balancing of network traffic provided by HP APA.

•The switch uses a MAC address load-balancing algorithm. Because the servers' link aggregations have fixed MAC addresses, the switch will not load balance; it will only transmit data on one physical link.

28 Configuring APA