Crocus
Bridge Interface
- Interface modules for the Crocus
baseband modems offering Ethernet Bridge functionality
- Modular Plug-in module for maximum
Flexibility and efficient Stock Management
- Fully IEEE 802.3 compliant
- Automatic LAN table learning and
ageing
- For all stand-alone models and
card version models
- Transparent and Nx64 Kbps version
available
The CROCUS
family of baseband modems can be equipped with a large set of
modular exchangeable interfaces, making it the high speed interconnection
solution for an extremely wide set of applications. A bridge interface
modules combines the LAN and WAN subsystem in one single equipment.
It automatically learns the MAC addresses on the LAN it is connected
to and forwards through the Crocus baseband connection only those
frames destined for another LAN. The Bridge’s LAN table can
store up to 10000 addresses and features an automatic updating and
ageing mechanism. The interface modules are fully compliant with
the IEEE 802.3 standard and offer a direct UTP connection for connecting
the Local Network. The polarity of the received signal on these
interfaces is automatically corrected if reversed, as in the case
of a wiring error. The Crocus baseband modem with a Bridge Module
offers the ideal solution for a low cost interconnection between
physically dispersed parts of a LAN subnet. (e.g. different buildings
in a plant, campus networks, etc..).
Typical application 1: Interconnecting
LANs in different buildings
It is also the central solution
for concentrating different subnets through high speed baseband
connections. Indeed: the combination with Crocus Twin modems offers
a LAN concentration of 30 remote networks in just one Cardnest !
A typical application is the professional high speed Internet
access.
At the customer side one has to install
a Crocus table top model with bridge interface. The customer’s
network can either be a single PC (A), a small network (B) or a
large network (C). In the latter case, the network is connected
to the Crocus through the customer’s router. At the central
site, the Crocus modems are also equipped with Bridge interface
modules. An Ethernet swith concentrates the different modules and
forwards the traffic to the Internet backbone.
The Bridge interface exists as a
transparent module which uses all the available bandwidth on the
communication link for the transmission of Ethernet packets. On
the other hand, it is also available in a version with Nx64 Kbps
possibilities, which integrates the bridging and the rate conversion
functionality on one single interface board. It allows for the selection
of the speed of the Ethernet interconnection at any multiple of
64Kbps.
Typical application 2: Professional
high speed Internet access
Typical application: LAN to LAN
interconnect through a DACCS backbone
TECHNICAL SPECIFICATIONS
LAN interface:
RJ45 Unshielded Twisted Pair (UTP)
Automatic TP polarity reversal
fully IEEE 802.3 compatible
Indications:
Nx64 Kbps functionality (Nx64
Kbps model only)
Configuration of any muliple of 64
KBps, up to the line speed G.704
compatible framing for direct interfacing on central cross conect
systems
Configurable Ethernet interconnection
speeds
|
Transparent
Bridge
|
Nx64 Kbps
Bridge
|
| Crocus HS |
48,56,64,72,96,112,128,144
Kbps |
- |
| Crocus SDSL |
384, 768, 1152 Kbps |
Nx64 Kbps (Max 1152
Kbps) |
| Crocus HDSL |
2048 Kbps |
Nx64 Kbps (Max 2048
Kbps) |
Hardware
configuration
BRIDGE MODULE SALES ITEMS
Internet
Access