Intranet
IP VPNs can create an intranet that links a corporate headquarters to remote offices over a
shared network allowing users to gain access to secured corporate information

Extranets
Extranets support business-to-business communications enabling an enterprise to be connected
with other enterprises, customers, suppliers or business partners.

Cost Effectiveness
Previously, network connections between sites required dedicated circuits or private virtual
circuits (PVCs). MPLS-based VPNs provide access to the entire IP network with any-to-any
connectivity. This will reduce connectivity charges due to the sharing of infrastructure.

Convergence
IP VPN provides seamless integration of voice and data networks under one IP network
infrastructure, with the ability to customize VPN services for each business customer thereby
increasing differentiation and adding value through bundled services for data, voice, video,
network security and other options.

Security
Each VPN on a single physical infrastructure is treated as a logically independent routing domain,
allowing end-users to use private and unregistered IP addresses to secure their data as it travels
through your network.

Reliability
Network redundancy and fault-tolerance ensure service availability. Sri Lanka Telecom's highly
redundant backbone ensures reliability of the IP VPNs. SLT MPLS core network based on DPT
technology and access rings based on POS gives very high redundancy for VPNs.

Scalability
MPLS-based network architecture easily adapts to growth in complexity and volume. Since the
VPN network is any-to-any by default, VPN network expansion can be achieved with minimum
additional expenses.

Flexibility
VPNs can be developed with different applications such as Full-Mesh topology for voice and
Hub-and-Spoke for Internet access.

Class of service
IP VPNs incorporate the ability to provide advanced Class of Service (CoS) features that ensures
network priority for mission-critical traffic, allowing businesses to choose the appropriate CoS for
their specific traffic patterns and business requirements.