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Chapter 12. High availability and redundancy 311
12.3.2 DHCP considerations
The SDMC cannot be a DHCP client. If your network is set up so that one DHCP
server is running at a time (you have one range of DHCP addresses), then both
the SDMC network configurations must be identical and each network interface
card (NIC) must be connected to the same networks on each node. For example,
if eth0 is connected to the 192.168.1.0 network segment on the primary node,
then eth0 on the secondary node must also be connected to the same segment.
The SDMC High Availability environment can be configured in either a
non-shared or shared DHCP configuration, as shown in Figure 12-6 on
page 312.
Non-shared DHCP configuration
The DHCP server is run (and monitored) on each node. Configure each node to
use the same network interface (eth0 in Figure 12-6 on page 312) but to use
different address ranges.