Fibcom Etex - Manufacturer, Service Provider, Trading Company, Gurgaon, India

Product Code : 09

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Product Specification

Ethernet Interfaces:
Introduction
This Technical Note describes the range of Ethernet modules designed for the products: FIBCOM 6310 Edge Node, FIBCOM 6320 Edge Node and FIBCOM 6340 Switch Node. It contains information on physical interfaces on the modules, mapping structure of the Ethernet traffic into the SDH and switching capabilities.

Overview:
Ethernet Interfaces in FIBCOM 63xx Products
Table 1 provides an overview of Ethernet modules designed for the three FIBCOM products this document refers to.

Ethernet Interfaces
Description	Availability
ETEX1, 1x1000Base-SX	-	-	Yes
ETEX1, 1x1000Base-LX	-	-	Yes
ETEX2, 2x1000Base-SX	-	-	Yes
ETEX2, 2x1000Base-LX	-	-	Yes
ETEX4, 4x10/100Base-T	Yes	Yes	Yes

Table 1 Ethernet modules and availability.

Ethernet Features:

Gigabit Ethernet, ETEX1/ETEX2
The ETEX1 and ETEX2 modules are designed for FIBCOM 6340 Switch Node, Feature Pack 2.0. The ETEX1 module contains one physical Gigabit Ethernet interface, the ETEX2 modules is provided with two such interfaces.
The ETEX modules are available with either 1000Base-SX or 1000Base-LX interfaces. As a rule of thumb an SX laser can reach a distance of at least 300 meters over a multi mode fibre. Using a LX laser along with a single mode fibre the distance increases to approximately 5 km.
The Ethernet traffic is mapped into one VC-4 as a point-to-point connection in the network. It is possible to adjust the allowed MAC bandwidth in steps of 50 Mbit/s. Each interface has a buffering capacity of 16 kbit. The Ethernet MAC frames are mapped into SDH using the GFP (Generic Framing Procedure) as standardised in ITU-T Rec. G.7041.
Performance data is collected and calculated on the physical Ethernet interface, the MAC frames and for GFP.
One single FIBCOM 6340 Switch can support up to 16 Gigabit Ethernet interfaces in just two sub-racks.

Fast Ethernet, ETEX4:

For FIBCOM 6310 Edge Node and FIBCOM 6320 Edge Node, Feature Pack 4.10, and Feature Pack 2.1 of FIBCOM 6340 Switch Node a module with four Fast Ethernet interfaces is available.
The Fast Ethernet interfaces are electrical of the type: 10/100Base-T. For transmission over a single twisted pair it is possible to reach a distance of at least 80 meter.
Traffic between ETEX4 modules in a network is set up as point-to-point connections. The bandwidth of the Ethernet MAC signals between the interfaces is selectable in steps of 2 Mbit/s up to a maximum bandwidth of 10 Mbit/s. 1 to 5 VC-12 containers are virtual concatenated. PAUSE frames are used for flow control. Also LCAS (Link Capacity Adjustment Scheme) is supported.
LCAS makes it possible to use protection routes in the SDH network for Ethernet traffic. When a route fails it will not disrupt the traffic, the link bandwidth just drop to haft of the normal bandwidth.
The Ethernet MAC frames are mapped into SDH using the GFP (Generic Framing Procedure) as standardised in ITU-T Rec. G.7041.
The performance is measured on basis of the individual VC-12 containers.
The FIBCOM 6310 Edge Node can be equipped with four Fast Ethernet interfaces, for FIBCOM 6320 Edge Node the upper limit is 24 interfaces, and in a FIBCOM 6340 Switch Node it is possible to mount up to 96 Fast Ethernet interfaces in four sub-racks.

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