16
3.3
Setup of the Basic Network Configuration
Note:
We recommend the following settings for the operation of the CS121 via
cross cable (Ethernet cable for the connection directly). Set the IP address of the workstation
with a cross cable to an IP address of the same network segment, e.g. 10.10.10.11 AND set
the gateway to 10.10.10.10.
A network cross cable is a PC-PC network cable, which does not require a switch or a hub
between 2 network workstations (2). Most modern workstation network cards have an auto
detection, so any network cable may be used. Only if you do not have such a cable, connect a
switch or Hub between your workstation and the CS121 (1).
Figure 4:
Connection PC-Switch/Hub and CS121 (2) Connection PC-Cross
Cable/Network Cable and CS121
3.3.1
DHCP
– Obtain an IP address automatically
By default DHCP is off at all CS121. From CS121 FirmWare Version 4.25.x you can switch on
DHCP via DIP switch 2 manually. Therefore the CS121 will get a DHCP IP address from the
DHCP server during reboot. Prior of that, you should detect the MAC address of the CS121 to
be able to find the IP address on your DHCP server. You can also use the GENEREX
Netfinder tool (
http://www.generex.de/generex/download/software/install/NetFinder.zip
). This
tool searches all CS121/BACS devices into your network environment.
We recommend to use
static IP addresses, because the CS121 is used for multi server shutdowns via RCCMD too
and it might be, that the DHCP server got a breakdown.
For that reason the delivery default of
the CS121 is always with DHCP OFF!
Note:
The function DHCP ON/OFF is valid for the following models only: all
CS121 HW 131 and all BACS II Webmanager Budget (not valid for all
CS121 HW 121, SiteManager, SiteMonitor, MiniSlot, CS121_RII and
Piller I/O Board)!
3.3.2
Establishment of a static CS121 IP address manually (default delivery state)
The minimum requirement to operate the SNMP-adapter is to set the IP address, subnet mask
and the UPS model:
The DIP-switches of the SNMP-adapter firstly need to be set for the configuration. DIP-
switch 1 is switched OFF in the top position as well as DIP switch 2 is switched OFF.
Note:
For slot versions you have to insert and remove the device for any
reboot-process. This will not have any effect on your UPS but we
recommend doing such operations only when the UPS is not supplying
any load!