The multipurpose network on board Thalassa

Data Processing Department
The multipurpose network on board
Thalassa
On board Thalassa, an important multipurpose network support a set of scientific computers and a multimedia
broadcasting real time system.
Real spine of the vessel, this local area network was designed to answer to the scientific community needs with
an open-ended capability and guaranteed throughput to each connecting point.
The network features
Star topology
Technology : 4 shielded twisted pairs
type 5 EIA/TIA 568
Cable characteristics : 12 km length
6 mm diameter
Number of broadcasting points : 208 of RJ45 type
whose 31 IP66
Network head : 1 DEChub 900 Multiswitch
2 DECrepeater 900TM (2 shared Eth.)
2 VnSwitch 900 EE
1 ATM switch 8 ports
1 ATM/Eth. switch router 12 ports
Integrated redondancy
Secured video control
DEChub 900 Multiswitch (DIGITAL)
The network facilities
Š Data acquisition of the sensors
Š Shared resources (files, software, ...)
Š Data broadcasting in real time
Š Shared devices (plotter, printers, ...)
Š Centralized data archival storage
Š Communications between the different systems
Š Extended data graphic display
Š File transfer between different types of machines
Š Cruise log book
Š Client/server applications
Š Digital video supervision of the ship
Š Communications between land and ship
(email, ftp, ...)
Š External subnetworks connection
(towed acoustic systems, ...)
General configuration of the network
Scientific data acquisition
Navigation
and
cartographic
workstation
GPS
Technical data acquisition
VME
VME
SR_ACQ
Archiving
system
SR_NAV
Echo sounders
Heading, log
Ethernet
Email
INMARSAT-B
Network
head
Fisheries data display
Cruise
logbook
C
a
m
e
r
a
s
Echo-integration
Video on demand
and graphic display
server
SR_VID
ATM
DEChub 900 MS
64 Kbits
DIGITAL
Visualization equipment (X11, Mpeg)
switched
Ethernet
Printers
Scientific
server
SR_EXP
Network analyse
and setup
IFREMER - Centre de Brest
SR_NAV
SR_ACQ
SR_VID
SR_EXP
real time navigation subnetwork
real time acquisition subnetwork
video & graphic broadcasting subnet
postprocessing subnetwork
Plotter
UNIX workstations
and
PC WINDOWS
For more information, we suggest to browse through our internet server : http://www.ifremer.fr/fleet
96011
Head Office
155 rue Jean-Jacques Rousseau
92138 Issy-les-Moulineaux Cedex
France
phone 33 (0)1 46 48 21 00
33 (0)1 46 48 22 96
fax
© Ifremer
Contact
Département Equipements Scientifiques
et nformatique embarquée
Centre de Brest
BP 70, 29280 Plouzané - France
phone 33 (0)2 98 22 41 83
33 (0)2 98 22 45 46
fax
email [email protected]