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4985LAN Large Matrix Display 4985 - V08.00
38 / 84
hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
5.3.3.2.12 VLAN (Activation Key necessary)
A VLAN (Virtual Local Area Network) is a logical sub-network within a network switch or a
whole physical network. VLANs are used to separate the logical network infrastructure from
the physical wiring, thus to virtualize the Local Area Network. The technology of VLAN is
standardized by IEEE Standard 802.1q. Network applications like Network Time Client
8029NTC, implementing the standard IEEE 802.1q, are able to allocate individual network
interfaces to specific VLANs. To transfer data packets of several VLANs via a single network
interface the data packets are marked with a related VLAN ID. This method is called VLAN-
Tagging. The network application at the other end of the line (e.g. network switch, router etc.)
can allocate the data packet to the correct VLAN by checking the marking / tag.
WebGUI with activated VLAN
To be able to configure VLANs the activation status must be set to "enabled" first. Afterwards
up to 32 different VLANs per network interface can be configured by clicking the button "Add".
An explicit VLAN ID must be configured for each VLAN interface.
The boxes "Label" and "Remark" can be filled out with a designation or a comment to easily
keep the configured VLANs apart.
Determination of the IP-address for the configured VLAN interface can either be done
automatically via DHCP or by filling out the boxes "IP-Address" and "Network Mask".
To ensure the correct function the network appliance must be connected
with Time Client 8029NTC via the network interface. Furthermore it must be
ensured that the network appliance is accurately configured with the same
VLANs.
VLAN ID one (1) and two (2) are reserved and are therefore not permitted!