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Front: LVM2000 LAN over Serial Services
Rear: LVM2000 LAN over Serial Services

LAN over Serial services

Metrodata's LVM2000 enables the transmission of LAN frames over a serial connection, e.g. operating with satellite modems offering LVDS interfaces, and thereby providing a low cost alternative to HSSI for operation at up to 52Mbps.

LAN extension LVDS Serial services at up to 52Mbps

  • Dual RJ45 plus single SFP flexible media port, offering local Switched Ethernet connections up to 1Gbps
  • Crypto Auto Resync function
  • Link Loss Forwarding
  • Ethernet Jumbo Frame Support (2048 byte)
  • 802.3ah OAM Support, with IP proxy over OAM mode
  • 802.1q VLAN support (pass-through and tag switching)
  • 802.1p priority queuing (4 queues)
  • RSTP Support
  • SSH, TACACS+, Telnet & SNMP Management
  • Extensive Statistics & Performance monitoring
  • Integral auto-sensing AC (110V-250V) or -48VDC PSUs
LVM2000: Enabling ethernet over LVDS satellite modems
LVM2000: Enabling ethernet over LVDS satellite modems

The LVM2000 is a member of the MetroCONNECT family, offering Managed local Ethernet Switching at up to 1Gbps and LAN extension over LVDS Serial wide area links. The LVM2000 supports auto negotiation and auto MDI/MDI-X cross-over switching on two RJ45 LAN interfaces. A further LAN interface is provided via an SFP port, offering either an additional RJ45 connection or a variety of multi-mode and single-mode fibre interface options.

The LVM2000 will also operate with the latest generation of high speed crypto units which offer LVDS interfaces for operation at up to 52Mbps. The LVM2000 offers an automatic transmit crypto resync function that will generate a resync request to the crypto if the LVM2000 senses the data stream has lost synchronisation.

Ethernet VLANs are supported, either by pass-through of existing Tags or by the Push and Pop of Tags on ingress and egress at Ethernet ports. Pre-embedded prioritisation schemes can be honoured, or alternatively prioritisation can be over- written under Management control. Bandwidth limitation per port and per prioritisation can be implemented, providing a mechanism for differentiated QoS for multiple services. Management is offered via each of; Serial Terminal connection, Telnet, SNMP or Web Browser application. Management security is offered via SSH and TACACS+ authentication. Support is also offered for ‘Carrier Ethernet’ Link OAM Management (IEEE802.3ah), enabling status information to be shared with connected equipment if required.

Management is offered using OAM, SNMP or Telnet, either locally via any of the available subscriber ports or remotely over a WAN connection. With VLAN support enabled, management access is enabled individually on a per port basis to provide secure access to the unit.

The LVM2000 supports VLAN in two ways. In normal mode, VLAN tagged frames are passed unmodified; however when VLAN support is enabled, the LVM2000 supports VLAN tag-based switching whereby access may be controlled using VLAN IDs. The unit is password protected for Telnet access for security, and for SNMP is configured with a primary and multiple back-up NMS stations. SNMP access will only be accepted from an authorised NMS.

LVM2000: Enabling ethernet over LVDS satellite modems using the LVM2000
Transporting Ethernet over LVDS satellite modems using the LVM2000

This application shows how the LVM2000 can be used to deliver LAN over LVDS satellite modems.

Transporting Ethernet over LVDS satellite modems via an LVDS encrypter using the LVM2000
Transporting LAN via LVDS encrypters over LVDS satellite modems using the LVM2000

This application shows how the LVM2000 can be used to deliver LAN over LVDS satellite modems via an LVDS encrypter, such as the KIV-7M. The LVM2000 supports an auto crypto resync function which will automatically detect a loss of encrypter synchronisation and resync the encrypters.

LVM2000: Enabling Ethernet over HSSI satellite modems via an LVDS encrypter
Transporting LAN over HSSI satellite modems via an LVDS encrypter using the LVM2000 and BC1000

This application shows how the LVM2000 and BC1000 can be used to deliver Ethernet over HSSI satellite modems via an LVDS encrypter, such as the KIV-7M. The LVM2000 supports an auto crypto resync function which will automatically detect a loss of encrypter synchronisation and resync the encrypters. This same network topology can also be used with radio relays systems.

Subscriber Port
Presentation 2 x 10/100/1000baseT port with auto- negotiation and jumbo frame support
Interface RJ45 (Auto Crossover MDI/MDIX)
Operating Mode Auto Negotiate, 10M, 100M, 1000M Full Duplex, Half Duplex
LEDs Link Activity, Speed
WAN Port (Connect to Modem)
InterfaceLVDS, EIA-644 DTE
Presentation 25 way D-type male
Frame Mode Unframed
Timing Supplied by Modem DCE
Encapsulation HDLC
1000Base-X Fibre Interface
SFP PortIEEE802.3z 1000Base-X
InterfaceDual LC
Integral Power Supply
-48 VDC Supply -40 to -72 VDC, 125 - 65mA
AC Mains 100 - 250VAC, 50 - 60Hz, 60 - 25mA
Power Consumption 6 watts approx when operating
Compliance & Approvals
Safety EN60950, IEC-60825-1 (Class 1 Laser Eye Safety)
EMC EN550032
Environment
Storage Temp -40 to +100 deg C
Temp 0 - 50 deg C
Humidity 0 - 95%, non condensing
Pressure 86 - 106 KPa
Packaging
Type Modem, 1U High without feet
Dimensions ( W x D x H mm)
Rack mount 202 x 132 x 44 (without feet)
Tabletop 202 x 132 x 48 (with feet)
Part Number
Product AC Mains DC Power
LVM2000 LAN Over Satellite 80-70-549
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80-71-549
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2 Unit Rack mount Kit 80-05-256
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80-05-256
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18 Unit Rack mount Kit 80-05-250
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80-05-255
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LVM2000 to KIV-7M cable (red side) 80-415-0019 (1.5m)
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80-43-0019 (3m)
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Product variants with 12V to 24V DC operation are also available on request.

Product Downloads

Product
Datasheet
LVM2000 

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