Leased line

seminar

1. LEASED LINE

2. CONTENT Introduction- Leased Line Leased Line Meshes History Advantages and Disadvantages of Leased Line Application Types of Leased Lines - Point to point connection - MPLS VPN - Internet Leased Line Leased Line Alternatives Conclusion Acknowledgement

3. INTRODUCTION – LEASED LINE Leased line are basically point to point connection given on lease basis. To transmit the data between computer and electronic information device we uses a leased line. . Leased line

4. Leased line are circuits that often goes through multiple switches and trunk lines. Looks to user like a simple direct link. Leased lines carriers offer leased lines at an attractive price per bit sent to keep high-volume customers . Leased line switch

5. Leased circuits are provided to subscribers for internal communication between their offices/factories at various sites within a city/town or different cities/town on point to point basis, or on a network basis interconnecting. Analog leased line can provide maximum bandwidth of 9.6 Kbps. Digital leased lines can provide bandwidths : 64 Kbps, 2 Mbps, 8 Mbps, 34 Mbps.

6. LEASED LINE MESHES If we have several sites, we need a mesh of leased lines among sites. It is known as leased line meshes . mesh

7. HISTORY Leased lines services (or private line services) became digital in the 1970s with the conversion of the Bell backbone network from analog to digital circuits. With the extension of digital services in the 1980s, leased lines were used to connect customer premises to frame relay or ATM networks.

8. ADVANTAGES AND DISADVANTAGES OF LEASED LINE ADVANTAGES – Leased Lines are Available at Higher Speeds No Slow-Down at Peak Times Faster Uploads More Reliable Business-Class Support

9. DISADVANTAGES – Limited range of services - Only Plain Leased Line Service, Data cards support only up to 64 kbps, no support for N x 64 Kbps. From Operator point of view in case of Leased Line Circuit different boxes from different vendors so difficult to manage & control. No Centralized Monitoring or alarm or performance monitoring. The solution to this is MLLN.

10. APPLICATION Leased lines are used to build up private networks, private telephone networks or access the internet or a partner network. Leased lines are most commonly rented by businesses to connect branch offices of the organization. Leased lines guarantee bandwidth for network traffic between locations.

11. TYPES OF LEASED LINE Point to point connection. Multi-protocol-level-switching (MPLS ) VPN. Internet Leased Line.

12. POINT TO POINT CONNECTION A dedicated link through the service providers network. This link is not shared with other customers, and provides a dedicated circuit between two locations. It is a permanently established circuit through the service provider’s switched network, similar to what is illustrated in the figure below.

13. MPLS VPN MPLS VPN stands for MULTIPROTOCOL LABEL SWITCHING VIRTUAL PRIVATE NETWORK. An MPLS Network is formed by connecting each location with a single link to a service provider MPLS network.

14. INTERNET LEASED LINE An Internet Leased Line is usually a dedicated line which offers direct connectivity to the Internet. This is done by connecting the nearest service provider nodal point and the customer premises with a dedicated copper line, optical fibre cable, radio links Internet Leased Line are preferred over broadband connections for providing internet connectivity to large organizations like colleges, corporate offices, hospitals, etc.

15. INTERNET LEASED LINE

16. LEASED LINE ALTERNATIVES Leased lines are more expensive than alternative connectivity services including (ADSL, SDSL, etc.) because they are reserved exclusively to the leaseholder. Some internet service providers have therefore developed alternative products that aim to deliver leased-line type services (carrier Ethernet-based, zero contention, guaranteed availability), with more moderate bandwidth, over the standard UK national broadband network. While a leased line is full-duplex, most leased line alternatives provide only half-duplex or in many cases asymmetrical service

17. CONCLUSION Leased lines cost a lot more than ADSL connections, but for that extra money you get a dedicated, reliable connection with good support, and a faster upload speed. You're paying for quality. Leased line problems are usually fixed quicker than ADSL ones.

18. ACKNOWLEDGEMENT Respected Sir and Madam My classmates