Telecomunicaciones

FOX515 with Ethernet over SDH services
NEBRO adds advanced LAN/WAN functionality

Broadband Ethernet services
New Ethernet Services With the availability of the NEBRO unit the FOX multiservice access platform now offers further extended broadband capabilities. Cost-effective Fast Ethernet and Gigabit Ethernet connectivity is now combined with the well-known reliability and manageability ofSDH networks. This makes it ideal for bandwidth intensive applications like corporate Internet access, office LAN interconnections, and video over IP applications. Furthermore, NEBRO can offer new services for SCADA system related tasks. How does it work? The Ethernet frames are encapsulated in SDH by using GFP and then transported through the SDH network in a VC-12 or VC-3 group. VCAT and LCASenhance the flexibility of bandwidth usage and traffic protection based on the traditional SDH protection schemes in combination with LAN/WAN based restoration mechanisms. Apart of the physical Ethernet interfaces on NEBRO’s front side, the card supports eight Logical WAN Ports (LWP) with 2 Mbps granularity toward the FOX SDH trunk interfaces. These LWP can be used to carry individual VLANs withguaranteed bandwidth per service or tagged VLANs sharing bandwidth according CoS to definitions. Standard Interfaces NEBRO offers on its front side four 10/100 BaseT interfaces and two cages for optical SFP plug-in modules. Having electrical and optionally optical interfaces makes the NEBRO suitable for a wide range of mission critical applications. NEBRO fits perfectly for utility networks with theirhigh expectations and commitments to quality and reliability. The electrical Ethernet interfaces (RJ-45 connectors) are implemented according to IEEE Std 802.3. The two cages for plugin SFP modules comply with the industry standard multi-source agreement. The Ethernet over SDH transport using GFP and VCAT opens new horizons in terms of interoperability and standardization. They permit transparentoperation with legacy SDH equipment as well as interworking with any other standard compliant equipment. Seamless Migration The new NEBRO plug-in module is fully compatible with the existing base of FOX515 and FOX512 installations. Therefore, FOX network elements can be smoothly upgraded to support new broadband Ethernet services – all in perfect combination with the traditional services liketeleprotection, emergency phones, and SCADA. Using TDM technology (PDH/SDH) on the trunkside assures the continuity of time and mission critical services. One Management System The management of the various types of services and transport functions is all centralized under the umbrella of ABB’s Network Management System. This enables the user to act in a familiar environment, reduces further trainingefforts, and accelerates the provisioning of Ethernet / IP connections over the valuable SDH network assets.

Ethernet over SDH services on FOX
SCADA Event Rec Video

FOX Station I
4x10/100 BaseT 2 x GbE

NEBRO A SDH card

Video VoIP SCADA Event Rec LWP 1 LWP 2

NEBRO
Ethernet Switch

C B B

B' FOX Station III A'

B
LWP 8

...

A

LWP 6

LWP 7

A

GFP/VCAT mapperFibre-Optic Backbone
FOX Station I FOX Station II

A

B

A

B

C

A

B

C

SDH datastream with VC12's

A C
A

B
B

C

SDH card NEBRO
SCADA Event Rec VoIP

SDH Trunk Card
Legacy Data 2/4 W Tel. Teleprotection Any other FOX Interface Card

Video: Virt. concatenated VC12’s for Station I to Station III Video VLAN connection VoIP: Virt. concatenated VC12’s oflogical ring VLAN for VoIP SCADA/Event Recorder: Virt. concatenated VC12’s of tagged VLAN connection Station I - Station II (dashed line indicating SDH protection ring)

The diagram above shows details of LANs for various Ethernet-based applications connecting to NEBRO. Packets are switched with a userdefinable capacity (n x 2 Mbps) to LWP and afterwards mapped according to GFP to concatenated...