Managing HP Serviceguard for Linux, Eighth Edition, March 2008

Understanding Serviceguard Software Components
How the Network Manager Works
Chapter 378
address and MAC address. In this example, the aggregated ports are
collectively known as bond0, and this is the name by which the bond is
known during cluster configuration.
Figure 3-18 shows a bonded configuration using redundant hubs with a
crossover cable.
Figure 3-18 Bonded NICs
In bonding, individual Ethernet interfaces are slaves, and the bond is
the master. In the basic high availability configuration (mode 1), one
slave in a bond assumes an active role, while the others remain inactive
until a failure is detected. (In Figure 3-18, both eth0 slave interfaces are
active.) It is important that during configuration, the active slave
interfaces on all nodes are connected to the same hub. If this were not
the case, then normal operation of the LAN would require the use of the
crossover between the hubs and the crossover would become a single
point of failure.
Node1
Node2
bond0:
eth0
eth1
bond0:
eth0
eth1
active
active
Crossover cable
Hub
Hub