This manual has been carefully compiled and examined to the state-of-the-art.
G&D neither explicitly nor implicitly takes guarantee or responsibility for the quality, efficiency and marketability of the product when used for a certain purpose that
differs from the scope of service covered by this manual.
For damages which directly or indirectly result from the use of this manual as well
as for incidental damages or consequential damages, G&D is liable only in cases of
intent or gross negligence.
Caveat Emptor
G&D will not provide warranty for devices that:
Are not used as intended.
Are repaired or modified by unauthorized personnel.
Show severe external damages that was not reported on the receipt of goods.
Have been damaged by non G&D accessories.
G&D will not be liable for any consequential damages that could occur from using
the products.
Proof of trademark
All product and company names mentioned in this manual, and other documents
you have received alongside your G&D product, are trademarks or registered trade
marks of the holder of rights.
Enabling the Bridge mode of a target module ..............................................188
Disabling the Bridge mode of a target module .............................................189
8 · G&D DVICenter
1
Basic functions
The Config Panel web application provides a graphical user interface to configure the
matrix switches of the KVM system. The application can be operated from any sup
ported web browser (see page 10).
ADVICE:
from the locations of the devices and consoles connected to the KVM system.
Thanks to its enhanced functions, the graphical user interface provides the following
features for easy operation:
Clearly arranged user interface
Easy operation through the drag & drop function
comprehensive target administration
Monitoring of various system features
Advanced network functions (netfilter, syslog, …)
Backup and restore function
The web application can be used in the entire network independently
-
G&D DVICenter · 9
System requirements
System requirements
The Config Panel web application is an application that runs on the Java platform. It
can be applied on a computer with installed Java Runtime Environment. Use one of the
supported web browsers to run this application.
IMPORTANT:
device on which the web application is operated to the local network (see installa
tion guide).
Now adjust the network settings as described on page 11.
Before operating the web application via web browser, connect the
-
Supported web browsers
The following web browsers support the web application:
Internet Explorer 7
Internet Explorer 8
Internet Explorer 9
Mozilla Firefox 34
Java Runtime Environment
The web application runs on Java Runtime Environment (JRE). Starting the web
application requires the installation of version 6 (update 19).
A free download of this version is available at the following website:
http://www.oracle.com/technetwork/java/
NOTE:
Mind the special instructions for running Java Runtime Environment on a 64-
In the defaults, the following settings are pre-selected:
IP address of network interface A: 192.168.0.1
IP address of network interface B: address obtained using DHCP
global network settings: settings obtained using DHCP
To access the web application, the network settings of the device on which the web
application is operated need to be configured.
ADVICE:
matrix switch can also be configured via the on-screen display of a user console.
How to configure the network settings before integrating the device into the local
network:
1. Use a category 5 (or better) twisted pair cable to connect the network interface of
2. Ensure that the IP address of the computer’s network interface is part of the sub-
3. Switch on the device.
4. Start the computer’s web browser and enter 192.168.0.1 in the address bar.
5. Configure the network interface(s) and the global network settings as described in
6. Remove the twisted pair cable connection between computer and device.
7. Implement the device in the local network.
As an alternative to the steps described below, the network interfaces of a
any computer to the device’s Network
net to which the device’s IP address belongs to.
NOTE:
Use the IP address 192.168.0.100, for example.
the paragraph
IMPORTANT:
subnet!
Network settings on page 21 f.
It is not possible to operate both network interfaces within one
A interface.
G&D DVICenter · 11
Getting started
Getting started
This chapter describes how to operate the web application.
NOTE:
The following chapters give a detailed overview of all functions and config-
uration settings.
Starting the web application
The web application can be operated on a computer with installed Java Runtime Environment. Use one of the supported web browsers to run this application.
NOTE:
Information regarding the system requirements of the web application are
provided on
How to start the web application:
1. Enter the following address to call the web application:
https://[ip address of the device]
NOTE:
case it is not possible to authenticate the opposite side via certificate.
Security instructions of the web browser
The device, on which the web application is operated, stores an SSL certificate that
enables the user or the web browser to authenticate the opposite site.
The certificate contains the following features:
page 10.
You can also start the web application via http connection (port 80). In this
with an individual certificate, which is related to the device. Information on how
to create such a certificate is given on
12 · G&D DVICenter
Replace the certificate that is included in the defaults of the device
page 30.
User login at the web application
After the certificates are authenticated, the login window opens.
How to log in to the web application:
1. Enter the following data in the login box:
Getting started
Username:
Password:
Select language:
2. Click the Login button.
IMPORTANT:
diately.
Use the administrator account to log in to the web application and change the
password
These are the preset access data for the administrator account:
Username: Admin
Password: 4658
(see page 66).
Enter your username.
Enter your user account password.
Select the language to be displayed on the user interface:
(Default): apply default setting
German
English
Change the preset password of the administrator account imme-
Operating the web application
User interface
The user interface of the web application consists of four main sections:
Figure 1: User interface
G&D DVICenter · 13
Getting started
The different sectors of the user interface perform various tasks. The following table
lists the intended use of each sector:
Toolbar :
The toolbar allows you to exit the active session and access the
basic configuration of the web application. It is also possible to
use the third icon for viewing and editing the settings of the
Ports.
Tree view :
User name :
Filter function :
The tree view shows the setting options.
Name of user logged in to the web application
The filter function can be used to limit the elements that are
displayed in the main view.
Enter a part of the name of the searched element into the text
field. Now, the main view only displays names that contain
this particular text.
Click Delete to cancel the filtering.
Main view :
After you selected an element in the tree view , the main
view displays the superior elements.
ADVICE:
In the main view of KVM matrix system and KVM combinations,
you can switch between the Monitoring and the Info mode.
The main view of the Monitoring mode shows the values of the monitored features.
The Info mode shows important information like the firmware version, or the
device’s IP and MAC address(es).
Right-click the table, and select Column view > Monitoring or Information to activate the
desired mode.
14 · G&D DVICenter
Getting started
Frequently used buttons
The user interface uses different buttons to carry out certain functions. The following table provides information on the names and functions of the buttons that are
used in many interfaces.
Reload:
Reload window values from the system’s database. Changes that
have been carried out by the user are overwritten.
OK:
Save your settings.
Afterwards, the window closes.
Apply:
Save your settings.
The window remains open.
Cancel:
Print:
Cancel your settings and close window.
Call print interface to select printer, page orientation and further
settings.
After the settings have been selected, the interface information
(e.g., the cascade information) can be printed.
Close:
Close windows.
User logout
Use the Logout button to exit the current session within the web application.
IMPORTANT:
web application against unauthorised access.
How to exit an active session in the web application:
1. Click the Logout button (see figure on the right) to exit the active session in
the web application.
After your logout, the login box is displayed.
Always use the Logout function to exit your session to protect the
G&D DVICenter · 15
Getting started
Selecting the default language of the web application
How to change the default language of the web application:
1. In the directory tree, click on System.
2. Double-click on Configuration in the main view.
3. Click the System tab.
4. Use the Language entry to select the default language to be displayed to all users of
the web application:
German
English
5. Click OK to save your settings.
Selecting the hash algorithm for storing passwords
By default, user passwords are stored as MD5 hash values in the database.
You can also change the hash algorithm to bcyrpt.
NOTE:
The hash algorithm bcrypt is supported from version 1.2.000.
Update the firmware of one of the devices before resetting a backup containing
bcrypt hash values.
How to change the hash algorithm to store passwords:
1. In the directory tree, click on System.
2. Double-click on Configuration in the main view.
3. Click the System tab.
4. Chosse the algorithm from the Hash algorithm options:
MD5
bcrypt
5. Click OK to save your settings.
Showing the version number of the web application
How to show the version number of the web application:
1. In the directory tree, click on System > Information.
2. Double-click on General.
3. Click on Close to close the window.
16 · G&D DVICenter
Getting started
Port administration
NOTE:
The number of Ports depends in the DVICenter variant in use.
The following paragraph explains how to configure the 32 Ports of a
DVICenter DP32 .
The DVICenter DP32 provides 32 Ports. These ports are used to connect user modules
or target modules.
IMPORTANT:
application, the connected user modules (
nized and the ports are auto-configured.
Up to version 1.10 of the web application, the CON or CPU mode of ports could be
manually assigned by the user. After a firmware update to the current version, the
web application of a configured matrix switch activates the Compatibility mode and
applies the user’s previous manual configuration.
ADVICE:
ity mode.
When installing a matrix switch with the current version of the web
CON) or target modules (CPU) are recog-
Click on Compatibility mode to switch between Standard mode and Compatibil-
Automatic port mode
In the default settings, the matrix switch autorecognizes the modules connected to
the ports and configures the ports accordingly.
IMPORTANT:
auto-configured. When cascaded
it, if necessary.
By cascading the matrix switch, you can increase the number of connected target
computers. For this, connect further matrix switches to the configured ports:
When connecting a user module or a target modules, the ports are
(see page 137 ff.) mind the port mode or change
G&D DVICenter · 17
Getting started
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In the default settings, ports 1 through 8 are pre-configured to connect a superior
matrix switch (
Up mode).
Ports 9 through 32 are pre-configured to connect a sub matrix switch (Down mode).
Figure 2: Port settings in default mode
ADVICE:
LEDs to the port mode
To facilitate the installation of the KVM switch, you can switch the port
(see page 20).
To change the port assignment mind the following instructions:
Configure all 32 ports either as Up port or as Down port.
Configure at least one port as Up port and one port as Down port.
Compatibility mode
NOTE:
Up to version 1.10 of the web application, the CON or CPU mode of ports
could be manually assigned by the user. After a firmware update to the current
version, the web application of a configured matrix switch activates the Compatibility mode and applies the user’s previous manual configuration.
ADVICE:
mode.
Click on Compatibility mode to switch between Standard mode and Compatibility
-
18 · G&D DVICenter
Getting started
In the default settings, ports 1 through 8 are pre-configured to connect user modules.
Ports
9 through 32 are pre-configured to connect target modules:
Figure 3: Default port assignment
ADVICE:
LEDs to the port mode
To facilitate the installation of the KVM switch, you can switch the port
(see page 20).
To change the assignment of Dynamic Ports, mind the following instructions:
Configure all 32 ports to connect either a user module (CON) or a target module
(CPU).
Configure at least one port to connect either a user module (CON) or a target mod-
ule (CPU).
Configuring ports
You can configure the ports according to your preferences. When doing this, mind
the instructions described in the previous paragraph.
How to configure a port’s mode:
1. Click on the Port configuration icon (see figure on the right) in the toolbar of
the web application.
ADVICE:
In Standard mode, you can switch between Up mode and Down mode of the ports.
In Compatibility mode you can change the ports to connect user modules (
mode
2. Right-click the port whose mode you want to change. Now, you can select the
mode from the context menu.
NOTE:
or Ctrl.
The graphic shows the port configuration.
CON
) and target modules (CPU mode).
You can select multiple ports with the left mouse key while pressing Shift
G&D DVICenter · 19
Getting started
3. Click OK to apply your changes.
IMPORTANT:
After changing the port assignment, the matrix switch restarts.
Showing ports modes
1. In the directory tree, click KVM matrix systems > [Name] > Matrix switches.
2. Right-click the matrix switch whose port mode you want to show. Now, click on
Port LEDs > Show port types
3. Now, the port LEDs show the current port mode:
LEDStandard modeCompatibility mode
Yellow
Green
NOTE:
Up mode
Down mode
While showing the port mode, the Identification LEDs on the device’s
front and back are blinking.
4. To restore the standard mode, right-click the matrix switch again. Now, click on
Port LEDs > Show status on the context menu.
on the context menu.
Connection of user modules (CON mode)
Connection of target modules (CPU mode)
20 · G&D DVICenter
Basic configuration of the web application
Basic configuration of the
web
The tool symbol in the toolbar can be used to access the basic configuration of the
web application.
Network settings
The devices with integrated web application are provided with two network interfaces (Network A and Network B). These network interfaces enable you to integrate the
device into up to two separate networks.
application
IMPORTANT:
network settings on page 11.
Please mind the separate instructions regarding Configuring the
Configuring the network settings
Configure the network settings to connect the device to a local network.
How to configure the settings of a network interface:
IMPORTANT:
NOTE:
reserved for the internal communication between devices. An IP address of this
address space cannot be assigned.
1. Click the tools symbol in the toolbar.
2. Click the Network > Interfaces tabs.
3. Use Interface A or Interface B paragraphs to enter the following data:
Operational
mode:
IP address:
It is not possible to operate both network interfaces within one subnet.
According to RFC 3330, the Link Local address space 169.254.0.0/16 is
Use the pull-down menu to select the operating mode of
Interface A or Interface B:
Off: switches off network interface.
Static: uses static settings.
DHCP: obtains the settings from a DHCP server.
Link aggregation active: This interface was added to a group
of network interfaces.
Use the »Link aggregation« tab to configure the network interfaces.
Only if the Static operating mode is selected: Enter the interface IP address.
G&D DVICenter · 21
Basic configuration of the web application
The following settings are automatically obtained in the DHCP operating
mode. Inputs are not possible.
Netmask:
Only if the Static operating mode is selected: Enter the network netmask.
Connection
type:
Select if the network interface and the remote station are to
negotiate the connection type automatically (
Auto) or if one
of the available types is to be applied.
4. Click OK to save the data.
Configuring the global network settings
Even in complex networks the global network settings ensure that the web application is available from all sub networks.
How to configure the global network settings:
1. Click the tools symbol in the toolbar.
2. Click the Network > Interfaces tabs.
3. Enter the following data in the Global network settings section:
Global preferences:
Hostname:
Domain:
Gateway:
DNS Server 1:
DNS Server 2:
Use the pull-down menu to select the operating mode:
Static: uses static settings.
DHCP: obtains the settings from a DHCP server.
Enter the device hostname.
Enter the domain the device is to belong to.
Enter the gateway IP address.
Enter the DNS server IP address.
Optionally, enter the IP address of another DNS server.
4. Click OK to save your data.
22 · G&D DVICenter
Basic configuration of the web application
Increasing the reliability of network connections through link
aggregation
In the default settings, you can use both network interfaces at the same time to
access the web application from two different network segments, for example.
To increase the reliability, the network interfaces can be grouped through link aggre-gation. Only one interface is active within the group. Another interface only becomes
active if the active interface fails.
We provide two different modes to monitor the interfaces:
MII mode: The carrier status of the network interface is monitored through the
Media Independent Interface. This mode only checks the function of the network inter
face.
ARP mode: The address resolution protocol sends requests to an ARP target within the
network. The answer of the ARP target confirms both the functionality of the net
work interface and the proper network connection to the ARP target.
If the ARP target is connected to the network but is temporarily offline, requests
cannot be answered. Define multiple ARP targets to receive an answer from at least
one target if an ARP target fails.
NOTE:
MII and ARP mode cannot be combined.
How to configure the settings of grouped network interfaces:
NOTE:
According to RFC 3330, the Link Local address space 169.254.0.0/16 is
reserved for the internal communication between devices. An IP address of this
addres space cannot be assigned.
-
-
1. Click the tools symbol in the toolbar.
2. Click the Network > Link aggregation tab.
3. Enter the following data into the Network paragraph:
Name:
Operational
mode:
Enter a name for the group of network interfaces.
Choose the operational mode for the grouped network interfaces:
Off: disables link aggregation.
Use the »Interfaces« tab to configure the network interfaces.
Static: A static IP address is assigned.
DHCP: obtain IP address from a DHCP server.
IP address:
Enter the IP address of the interface (only if you have
selected the Static operational mode).
Netmask:
Enter the netmask of the network (only if you have selected
the Static operational mode).
G&D DVICenter · 23
Basic configuration of the web application
4. Enter the following data in the Parameter paragraph:
Primary slave:
Link monitoring:
MII down delay:
MII up delay:
ARP interval:
ARP validate:
ARP target:
Choose if the data traffic should run via Network A (Interface A)
or Network
B (Interface B). As soon as the selected interface is
available, the data traffic is sent via this interface.
If you choose the option None, the data traffic is sent via any
interface. The interface only changes if the active interface is
down.
Choose if you want the MII or ARP mode (description see
below) to be used to monitor the interface.
Time delay in milliseconds before a failed network interface
is disabled.
The value must be a multiple of 100 ms (the MII link monitoring frequency).
Time delay in milliseconds before a reset network interface is
enabled.
The value must be a multiple of 100 ms (the MII link monitoring frequency).
Enter the interval (100 to 10,000 milliseconds) according to
which the incoming ARP packets of the network interfaces
are to be checked.
The validation ensures that the ARP packet for a particular
network interface is generated by one of the listed ARP targets.
Choose if or what incoming ARP packets are to be validated:
None: ARP packets are not validated (default).
Active: Only the ARP packets of the active network inter-
face are validated.
Backup: Only the ARP packets of the inactive network
interface are validated.
All: The ARP packets of all network interfaces within the
group are validated.
The table lists all configured ARP targets.
Use the
New, Edit, and Delete buttons to administrate the ARP
targets.
5. Click OK to save your settings.
24 · G&D DVICenter
Basic configuration of the web application
Reading out the status of the network interfaces
The current status of both network interfaces can be read out via web application.
How to detect the status of the network interfaces:
1. Click the tools symbol in the toolbar.
2. Click the Network > Link status tab.
3. The Interface A and Interface B paragraph provides you with the following data:
Link detected:
Auto-negotiation:
connection to network established (yes) or interrupted
(
no).
The transmission speed and the duplex mode have been
configured automatically (
yes) or manually by the admini-
strator (no).
Speed:
Duplex:
transmission speed
duplex mode (full or half)
4. Click OK to close the window.
Creating and administrating netfilter rules
In the default settings of the devices, all network computers have access to the
Config
Panel web application (open system access).
NOTE:
The open system access enables unrestricted connections via the following
ports: 80/TCP (HTTP), 443/TCP (HTTPS) and 161/UDP (SNMP).
If you create a netfilter rule, the open system access is deactivated and all incoming
data packets are compared to the netfilter rules. The list of the netfilter rules is pro
cessed according to the stored order. As soon as a rule applies, it is carried out and
the following rules are ignored.
Creating new netfilter rules
How to create new netfilter rules:
1. Click the tools symbol in the toolbar.
2. Click the Network > Netfilter tabs.
3. Enter the data described below.
-
Interface:
Use the pull-down menu to select on which network interfaces the data packets are to be trapped and manipulated:
All
Interface A
Interface B
[Name of a group of network interfaces]
G&D DVICenter · 25
Basic configuration of the web application
NOTE:
The IP address and/or a MAC address can be specified within a rule.
NOTE:
The IP address and/or a MAC address can be specified within a rule.
Option:
Use the pull-down menu to select how the rule’s sender
information are to be interpreted:
Normal: The rule applies for data packets whose sender
information does comply with the indicated IP address or
MAC address.
Inverted: The rule applies for data packets whose sender
information does not comply with the indicated IP address
or MAC address.
IP address/
Netmask:
MAC address:
Filter rule: Drop: Data packets whose sender information comply with
Enter the data packet IP address or use the Netmask entry to
enter the address space of the IP addresses.
Examples:
192.168.150.187: for IP address 192.168.150.187
192.168.150.0/24: IP addresses of section 192.168.150.x
192.168.0.0/16: IP addresses of section 192.168.x.x
192.0.0.0/8: IP addresses of section 192.x.x.x
0.0.0.0/0: all IP addresses
Enter the MAC address to be considered in this filter rule.
the IP address or MAC address are not processed.
Accept: Data packets whose sender information comply
with the IP address or MAC address are processed.
4. Click Add to save the data in a new filter rule.
The new filter rule is added to the end of the list of the existing filter rules.
5. Click OK to close the window.
NOTE:
The new netfilter rule does not apply for active connections. Restart the
device to disconnect any active connections. Afterwards, all rules apply.
Editing existing netfilter rules
How to edit an existing netfilter rule:
1. Click the tools symbol in the toolbar.
2. Click the Network > Netfilter tabs.
3. Mark the rule to be changed in the list of the existing netfilter rules.
26 · G&D DVICenter
Basic configuration of the web application
The IP address and/or a MAC address can be indicated within a rule.
NOTE:
The IP address and/or a MAC address can be specified within a rule.
4. The current rule settings are displayed in the upper part of the window. Check
and change the data described on the following page.
Interface:
Option:
IP address/
Netmask:
MAC address:
Use the pull-down menu to select on which network interfaces the data packets are to be trapped and manipulated:
All
Interface A
Interface B
Use the pull-down menu to select how the rule’s sender
information are to be interpreted:
Normal: The rule applies for data packets whose sender
information does comply with the indicated IP address or
MAC address.
Inverted: The rule applies for data packets whose sender
information does not comply with the indicated IP address
or MAC address.
Enter the data packet IP address or – using the Netmask entry
– the address space of the IP addresses.
Examples:
192.168.150.187: for the IP address 192.168.150.187
192.168.150.0/24: IP addresses of section 192.168.150.x
192.168.0.0/16: IP addresses of section 192.168.x.x
192.0.0.0/8: IP addresses of section 192.x.x.x
0.0.0.0/0: all IP addresses
Enter the MAC address to be considered in this filter rule.
Filter rule: Drop: Data packets whose sender information comply with
the IP address or MAC address are not processed.
Accept: Data packets whose sender information comply
with the IP address or MAC address are processed.
5. Click Change to save the changed data.
6. Click OK to close the window.
NOTE:
The changed network rule does not apply for active connections. Restart
the device to disconnect any active connections. Afterwards, all rules apply.
G&D DVICenter · 27
Basic configuration of the web application
Deleting existing netfilter rules
How to delete existing netfilter rules:
1. Click the tools symbol in the toolbar.
2. Click the Network > Netfilter tabs.
3. Mark the rule to be deleted in the list of the existing netfilter rules.
4. Click Remove.
5. Confirm the confirmation prompt by pressing Yes or cancel the process by
clicking
No.
6. Click OK to close the window.
Changing the order/priority of existing netfilter rules
The netfilter rules are processed in the order they are stored. If a rule does apply, the
respective action is carried out and all following rules are ignored.
IMPORTANT:
Please mind the order or priority of the single rules, especially when
adding new rules.
How to change the order/priority of existing netfilter rules:
1. Click the tools symbol in the toolbar.
2. Click the Network > Netfilter tabs.
3. Mark the rule whose order/priority is to be changed in the list of the existing
netfilter rules.
4. Click the button (arrow up) to increase the priority or the button (arrow down)
to decrease the priority.
5. Click OK to close the window.
28 · G&D DVICenter
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