Figure 99 Lan Control (Switching Of The Master Cm); Figure 100 Lan Control (When The Ip Address Of The Slave Cm Is Set) - Fujitsu ETERNUS DX100 S4 Design Manual

4. Connection Configuration
LAN Connection
IP addresses of the LAN ports are not assigned to each CM. These IP addresses are assigned to the
role of master or slave. If the Master CM is switched, the same IP addresses are reused. Therefore,
even if the Master CM is switched and the physical port is changed, access can be maintained via
the same IP addresses. The MAC address is not inherited.

Figure 99 LAN Control (Switching of the Master CM)

IP address A
CM#0
has failed
ETERNUS DX
ETERNUS DX
Each CM has an LED that lights up green to identify when it is the Master CM.
•
Setting the IP address of the Slave CM ensures that ETERNUS Web GUI or ETERNUS CLI can be
•
used from the Slave CM if an error occurs on the LAN path for the Master CM.
The Master CM and the Slave CM perform different functions. The Slave CM can only switch
the Master CM and display the status of the ETERNUS DX.
The IP address of the Slave CM does not need to be set for normal operation.

Figure 100 LAN Control (When the IP Address of the Slave CM Is Set)

LAN path
error
IP address A
ETERNUS DX
Fujitsu Storage ETERNUS DX100 S4/DX200 S4, ETERNUS DX100 S3/DX200 S3 Hybrid Storage Systems Design Guide (Basic)
Master CM Slave CM
CM#0
Controller enclosure
The Master CM is switched.
Slave CM Master CM
IP address A
CM#0
Controller enclosure
When the Master CM is
switched, the IP addresses
of the previous Master CM
are taken over by the new
Master CM.
Master CM Slave CM
IP address B
CM#0
Controller enclosure
The IP address of the Slave CM
is used to switch the Master CM
and display the status
of the ETERNUS DX.
Copyright 2023 Fujitsu Limited
CM#1
CM#1
CM#1
162
P3AM-7642-32ENZ0