DRA-2 UNIVERSAL COMMUNICATION NODE
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USER GUIDE - Rev.5 (January 2018)
•
Mode.
This specifies the type of operation for the LAN port in terms of speed and
operation mode. The operating parameters of the PLC ports are established in the
PLC submenu.
Auto
(autonegotiation): Recommended and value by default.
10fdx
: 10 Mbit/s Full-duplex.
100fdx
: 100 Mbit/s Full-duplex.
10hdx
: 10 Mbit/s Half-duplex.
100hdx
: 100 Mbit/s Half-duplex.
If an operation mode other than
Auto
is configured, both ends of the link must
be identically configured.
•
VID.
This indicates the VLAN in which the port is included. The assignation is made
from the VLAN submenu.
•
VID ACL (Access control list).
This parameter acts like a filter with regard to
packets accepted on the Port level, and only packets with a VLAN identifier
included in the list will be processed for transmission and reception purposes. All
the packets have a VLAN identifier, either because it was included when they were
received (tagged frames) or because it was assigned by the input port at the time of
reception, with the
VID
parameter being assigned to the port in the latter case. The
special value
any
signfies that the filter is not active.
•
Description.
A memotechnical descriptive field available to users.
5.3.2
VLAN
A Virtual Local Area Network (VLAN) can be defined as a series of devices connected in a
network which belong to one Local Area Network , even though they are connected in
different interconnection equipment, remote geographical zones, different floors of a
building or even different buildings. In other words a VLAN is a network with logical groups
which are physically independent.
Each VLAN is distinguished from the rest by a specific identifier, usually called a VLAN tag,
which is specified in standard IEEE 802.1q. The tag allows several VLANs to share
resources, including switching equipment such as the DRA-2, or links between switching
equipment, with the guarantee that the traffic from each VLAN will reach the correct
destination.
