Bonjour, je suis nouveau et c'est mon premier post sur ce forum donc j'en profite pour tous vous saluer et me présenter un peu. J'ai 29 ans,licencié en Sciences du Travail, je suis fan de mange, d'animation et de ciné, plutôt rémy sur les bords je ne quitte pas souvent mon pc (ceci explique peut-être cela et vice versa xD).

'Fin bon je suis pas venu pleurer sur ma vie mais pour vous expliquer mon problème : je suis stagiaire dans une entreprise qui travaille dans la synchronisation de réseaux d'entreprise de télécommunication.
Concrètement, c'est la solution hardware et software que vend l'entreprise qui garantit la stabilité des réseaux en cas d'utilisation massive comme par exemple le jour de Noël.
Cependant, au-delà de cette explication plus que superficielle, je ne comprends pas ce que fait exactement cette entreprise ni comment ça marche.
Donc si quelqu'un de calé dans le domaine pouvait me l'expliquer cela m'aiderait vraiment beaucoup.

Un grand merci d'avance,

Ghimel

http://en.wikipedia.org/wiki/High_availability ?

Comme je l'ai dis, je suis totalement ignare en la matière...Ta définition à l'air très complete mais un peu complexe pour démarrer.


Je copie les caractéristiques du module hardware, comprenne qui pourra...

US5G SHELF MODULES

Power Supply Modules
• Dual load sharing
• Each receives power from a dedicated back
panel power input
• Automatic redundancy in case of module
failure
• Front Panel fuses & power status LED’s
Communications Module
• US5G System CPU
• System Communications Controller—BOTH
external and internal com processes
• Provides system TL-1 Agent
• Manages all system security processes
• Manages all DB storage, access, &
synchronization with IOP back up
Input/Oscillator/Processor Module
• Dual Clock Modules
• Dual Input Modules—up to 10 inputs
• Dual GPS Receiver Modules (Optional)
• Dual System Data Base Back Up to the COM
module
Output Module
• Paired in adjacent slots for 1 to 1 output
protection
• Each output is software assignable for DS-1/CC
• Inventory Port Assignments in Software
• Alarm visibility to the port level
US5G INPUTS
• Termination—Wire Wrap on Back Panel
• Bridged—Each input to both IOP modules
• Variable Impedance Setting Adjacent to WW
terminals
• Inputs are Software assignable CC, DS-1
(SF/ESF), E-1, 1, 5, or 10 MHz
• Up to 10 Inputs each IOP module
• Selectable SSM activation—Gen 1 or Gen 2
GPS RECEIVER
• Dual Redundant Mounted in IOP Module
(Optional)
• Dual Antenna inputs
• Internal Signal termination to IOP Module
for PRS reference
PERFORMANCE MONITORING
• Simultaneous Data Collection on all Inputs
• Data Metrics—Frequency Offset, TIE, MRTIE,
TDEV, LMRTIE
• Averaging periods—from 10 to 100,000 seconds
• Threshold crossing Actions—Switch, Alarm,
Report, Ignore
• User Selectable Priority Options—Priority 1
to 10 or Monitor only
OUTPUT CAPACITY
US5G OUTPUTS
• 40 Outputs per Module, Paired for 1to1 Protection
• Main shelf capacity--160 Outputs
• Expansion Capacity—4 Expansion Shelves, 8
card-pairs each
• Total System Capacity—1440 Protected Outputs
COMMUNICATION AND MANAGEMENT
Craft/Local Ports
• 1 on front (COM Module), 2 on Rear Panel
Remote Management
• 1 RJ-45 Ethernet
• 1 X .25
• All 3 Serial ports can be provisioned for
modem interface to PSTN
• 5 DB-9 ports for Pass-Through interface with
non-networked elements
• 16 2-pin terminations for discrete input alarms
• 3-pin terminations for output alarms—3
Major, 3 Minor (NC/NO)
Software Interface
• Standards compliant TL-1 agent
• GUI interface
PHYSICAL/ENVIRONMENTAL
Operating Temp.
• 0° C to 50°C
Humidity
• 5% to 95%
Dimensions
• 10.5” H x 17” W x 11” D
Standards Compliance
• NEBS Level III—testing and evaluation by
Telcordia Labs
• All relevant Telcordia GR standards covering
TSG’s, oscillators and network
equipment—validated by Telcordia lab
evaluation

Modular Redundancy in Hardware
• Dual Power Inputs & Power Supplies
• Up to 10 Reference Inputs
• Inputs bridge to both IOP Modules
• Dual GPS Reference Receivers (Optional)
• Dual GPS Antenna Inputs
• Dual IOP’s (ST-2 or ST-3E)
• Paired Output Modules for 1 to1 Protection
• Dual Redundant umbilicals directly
connected to each expansion shelf
Microprocessor Control & Memory Features
• Top level Intel™ microprocessors on COM
and both IOP modules
• System Databases stored on the COM
module are backed up on BOTH IOP's
• Output Module on-board microprocessors
enable management to each output port
System Software Control Features
• Standards compliant TL-1 Command Line
Interface
• Auto-provisioning of all modules during
installation and initialization
• Upon insertion of a replacement module:
- Automated Hardware and Software
compatibility checks
- Automated Software download of
current module software
- Auto-provisioning from current
provisioning database
• Inventory in software:
- input reference source
- output port assignment
• Inventory CLEI and Mfg Serial Number in
software to aid in field servicing and PCN
administration
System Survivability—Clock BYPASS
In the event both IOP modules are lost or
removed simultaneously, the input reference is
routed via the BYPASS module directly to the
outputs. The BYPASS sub-assembly is
modular, alarmed, and service accessible
Oscillator Options
• Standard Quartz ST-3E & Rubidium ST-2
• Optional Stratum 2 High Precision Double
Oven Quartz Oscillator (DOCXO)—ST-2
performance at lower cost
Sub-Tending/Remote Clock Operation
• Subtending clock configurations are
provisioned in software
• The subtending clock is connected directly
to EMS
• SSM’s are received and relayed through the
subtending clock
• BYPASS redundancy is fully functional on
the subtending configuration
System Communications Interfaces
• Local craft interfaces—3 (1 front panel)
• TCP/IP Local Area Network
interface via RJ-45
• X.25 terminal interface
Integrated GPS Receiver – (Factory Option)
The IOP modules are designed to integrate a
GPS receiver. The GPS reference is internally
terminated. This arrangement optimizes rack
bay utilization by eliminating separately
mounted GPS units. The GPS references are
independent of other input capacity meaning
all other inputs are still available for selection
or for monitor only operation. Internal GPS
allows the system to provide Time of Day
(TOD) outputs—SNTP and NTP.
Alarm Reporting Modes
• Module Status and Alarm LED’s
• 6 Contact Closure Relays—Local & Remote
• TL-1 Autonomous Output Messaging
• 16 Discrete Alarm Input Relays
• Alarms reported for Expansion shelf
umbilicals & BYPASS module faults