Managing Serviceguard 12th Edition, March 2006

Understanding Serviceguard Software Components
How the Network Manager Works
Chapter 3 109
recovery for environments which require high availability. Port
aggregation capability is sometimes referred to as link aggregation or
trunking. APA is also supported on dual-stack kernel.
Once enabled, each link aggregate can be viewed as a single logical link
of multiple physical ports with only one IP and MAC address. HP-APA
can aggregate up to four physical ports into one link aggregate; the
number of link aggregates allowed per system is 50. Empty link
aggregates will have zero MAC addresses.
You can aggregate the ports within a multi-ported networking card
(cards with up to four ports are currently available). Alternatively, you
can aggregate ports from different cards. Figure 3-19 shows two
examples.
Figure 3-19 Aggregated Networking Ports