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MPLS-IP Backbone Network
 
One of the objectives of formation of RailTel was to spread telecom revolution in the remote and backward areas of the country by building state of the art multimedia network. In this process, RailTel has implemented country wide MPLS-IP backbone network to provide whole range of VPN & Internet services. The network has been built using high end routers of Juniper network. The network supports services like Layer 3 and Layer 2 VPN services, broadband internet access, multicast services etc. The MPLS network has POPs at 40 cities across the country and is in the process of being extended to other important cities/towns also. The IP services at more than 3375 POPs in the country will be extended through Ethernet interface available in the SDH networks at these locations which will in turn be connected to MPLS –IP backbone network at the 40 cities. The MPLS NOC is also equipped with Dorado Redcell and Infovista for network provisioning and performance management.
Design:

Backbone Capacity at STM-1

Meshed Backbone Architecture
High End Juniper Routers in the backbone
Core Routers Dual Homed for Redundancy
IP Services expandable to over 2896 PoPs on SDH Network
Layer-2/Layer-3 MPLS VPN Support
Features:

Nation-wide highly scalable MPLS-IP Backbone

Layer 2 & Layer 3 MPLS VPN Support
Differential QoS & CoS Support
Lowest Possible Latency on Domestic Circuits
Carrier grade backbone supporting multiple vendor network devices
Multi-Protocol support – FR/ATM/GRE/PPP/HDLC
SLA based service delivery
Bandwidth granularities from nx64 Kbps to 155 Mbps
 
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