Fujitsu PRIMEQUEST 500A Series Installation Manual page 192

CHAPTER 4 Work Required After Operating System Installation
(2) Duplicating the two NICs for the management LAN
To duplicate the management LAN, activate the two NICs for the management LAN
in the partition and use them. The duplication software (that controls LAN
duplication) directs the send packets to the appropriate transmission line considering
the status of the candidate transmission lines, thus achieving redundancy. When you
specify duplication, a virtual interface is created to make the two NICs logically work
as one NIC. PSA and other TCP/IP application programs use the IP address specified
for this virtual interface as the local system IP address to ensure that they can
communicate with the remote system without having to consider the redundant
physical configuration.
There are two choices of duplication software: Bonding or PRIMECLUSTER GLS.
Either one monitors the transmission line that extends to the external switch and, if it
detects an error, switches the transmission line.
As shown in
from the partition to the external switch by including the external switch connected to
the MMB user port in the target of monitoring by the duplication software.
PRIMEQUEST
Virtual
interface
Figure 4.1 Concept of management LAN duplication in PRIMEQUEST
In addition, you can design further reliable transmission lines by duplicating the
external switch and the transmission lines from the remote system to the external
switch as shown in
from the remote system to the external switch must be configured on the remote
system.
4-6
Figure 4.1, PRIMEQUEST achieves duplication of the transmission line
MMB#0
Partition
NIC#0
NIC#1
In this range, reliability is improved by duplication.
Figure 4.48. The settings for duplication of the transmission line
NIC
User port
User port
NIC
MMB#1
External
switch
Remote
system
C122-E001-10EN