Generex CS141 - Page 70

Version: 2020-09-04
70
Copyright of the European Union is effective (Copyright EU) (c) 2019 GENEREX Systems GmbH, Hamburg, Germany, All rights reserved
TEL +49(40)22692910 - EMAIL generex@generex.de - WEB www.generex.de (This and all other product datasheets are available for download.)
The following jobs are currently available:
Log Inserts a free definable message into the event log.
Email* CS141 will send an email.
Email Trap* CS141 will send Trap Mails
RCCMD Shutdown* CS141 will transmit a shutdown signal to one or more RCCMD clients.
RCCMD Message* CS141 will send an RCCMD message to one or more RCCMD clients.
RCCMD Execute* CS141 will send a command to execute a custom file.
UPS Shutdown*** Turn off UPS
AUX** CS141 will trigger external relays.
Buzzer** If a buzzer is connected, CS141 can activate it by using this job.
RCCMD Trap* CS141 will send an RCCMD trap message.
Send WOL Wake On LAN - The CS141 will send so-called magic packet to a network device.
Send SMS** If a GSM modem is connected, CS141 will be able to send SMS.
AUX: Switch Outlets*** As an example, the UPS can be instructed to disconnect the live outlets after a full discharge of the
batteries and run a time-delayed release to guarantee a minimum charge of the batteries..
WAKEUP If two UPS are running in redundancy mode, this custom RCCMD command can be used to withdraw an
RCCMD shutdown command
* Additional software may be necessary.
** This feature may require additional equipment and accessories.
*** This function is only available to a limited extent: although some UPS systems fundamentally support the functionality, they
respond very differently to this job:
Some UPS systems accept and confirm this job, but ultimately decide themselves about execution and timing.
Tutorial: WOL - The „Magic Packet “
What is the „Magic Packet “?
In principle, the "Magic Packet" is a standardized data package containing 4x FF. This data packet is sent directly to the MAC address
of a network card. Most modern network interface cards support this basic function natively, but for more network functionality, an
operating system is usually mandatory.
Preconditions to be met for setting up a working WOL system restart:
1. Depending on your network configuration, these ports must be open:
Port 7 – UDP
Port 9 – UDP
2. Operating system and/or the hardware oft he according taget system must be configured to handle WOL-Signals.
Where is the configuration made on the target system?
In principle, there are two basic scenarios:
Configuration work at the operating system
It is possible to specify whether the operating system allows the a "Magic Packet". If allowed, the operating system can be
configured to wake up from hibernation mode. The condition is, however, that the operating system is still running at this point,
albeit in some kind of deep sleep mode. If the hardware is turned off physically or a complete power loss happens, the
hibernation state of the operating system is gone with the power loss.
Configuration work at the BIOS
In the BIOS setting, the reception of the "Magic Packet" is controlled directly via hardware settings - the network card itself
manages the reception and starts the hardware. However, as soon as the computer is just in a hibernation mode, the
hardware is not responsible to manage a restart - the hibernated operating system has to trigger and manage the wake up.
The network card will only start the hardware via WOL in case of a complete power loss during hibernation mode.
Note:
Virtualized systems are a little bit awkward, because the network interfaces are normally virtualized: The Possibility to pass a WOL
signal through a physical network interface in order to start a virtual machine depends on the scope of functions the virtualization
solution itself provides. If in doubt, please contact the technical support of the corresponding virtualization solution.
OK, … but which settings must be done?
That depends on what you want to achieve.
If your (physical) computer normally needs to wake up from hybernation mode, the network options of the operating
system must be configured to manage WOL packets. When the computer is usually switched off, powering up is managed by
the hardware. You need to configure the hardware:
If you want to ensure an identical result in both cases, then it is recommended to carry out both settings accordingly