WEL-COME

PRESENTATION ON DESIGN OF LEASED LINE NETWORK USING VMUX

GUIDED BY – MR. L. K. VARMA SIR

PRESENTED BY-

AJAY KUMAR SONIMARTIN XESSASHISH NIRMALKAR PUSHKAR BHARTIYAGYAN PRAKASH

Leased lines

Limited to point-to-point communicationLimits who you can talk to

Carriers offer leased lines at an attractive price per bit sent to keep high-volume customers

LEASED LINE

Leased Line

Point to point connection.

Multi-label-protocol-switching(MPLS) VPN.

Internet Leased Line.

TYPES OF LEASED LINE

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.

POINT TO POINT CONNECTION

FIGURE DEPICTING POINT TO POINT CONNECTION

Point to point connection using vmux

This connection is directly "laid in" for you - thus you end up with a dedicated connection - for high end business's usually, with higher speeds, lower contention and faster response times to any problems.

Data security.

ADVANATAGE

As the organization grows present networking solution becomes costly since we will have to invest on Multiple links and Networking equipments.

 Provisioning & Commissioning.

DISADVANTAGE

MPLS VPN stands for MULTIPROTOCOL LABEL SWITCHINGVIRTUAL PRIVATE NETWORK.

An MPLS Network is formed by connecting each location with a single link to a service provider MPLS network

MPLS VPN

MPLS VPN NETWORK

BSNL – VPN Core Network

Chennai

Mumbai

Pune

Ernakulam

Delhi

Hyderabad

Bangalore

Kolkata

Lucknow

Ahmedabad

The performance characteristics of layer 2 networks

The connectivity and network services of layer 3 networks

Improves the price/performance of network layer routing

Improved scalability

MPLS Benefits

Quality of Service: Since MPLS network enables traffic engineering, it is possible to send (for example) – data traffic over a lower priority path and real time delay sensitive voice/ video packets over a high priority/ lesser used/ shorter path. This enables network convergence (The Wide Area Network becomes more suitable for introduction of new services like voice, video, multicast traffic, hosting etc).

Connection oriented network: MPLS is a connection-oriented network unlike connection less networks like IP. So, it is more reliable.

Bandwidth Allocation: MPLS networks allow for dynamic bandwidth allocation and hence can be used to provide bandwidth on demand (for a specific period etc) to customers. Further, rate limiting and other bandwidth management parameters allow a certain bandwidth to be dedicated for mission critical applications.

Advantage of MPLS VAN over POINT TO POINT CONNECTION

MPLS port and loop rates were higher than expected. Had the network been more geographically diverse, this factor would have been less noticeable, but for sites that were all close together and yet some distance from the closest POP, the pricing was out of line.

MPLS requires greater IT overhead to manage all of the routers at each site. The customer was looking to decrease the IT burden, not increase it.

DISADVANATAGE

MPLS VPN USING VMUX

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 fiber cable, radio links

INTERNET LEASED LINE

BASIC MODEL FOR INTERNET LEASED LINE

Internet Leased Lines offer same speed for both uploads and downloads

(symmetric connectivity), while in broadband (through DSL technology)

the speeds are always optimized for downloads and the upload speeds are

much lesser. etc. all of which are used by medium and large businesses

regularly.

Generally, broadband connectivity is shared with multiple users in a

locality. Broadband plans generally denote the best bandwidth that can be

attained and not the assured bandwidth levels. But a 2 Mbps Internet Leased

Line should give 2 Mbps of performance as it is a dedicated connection

without any sharing.

ADVANTAGE

G-4 MUX

MLLN VMUX

TYPES OF LEASED CIRCUIT

G-4 MUX

P.C.M stand for pulse coded modulation.A dedicated phone connection supporting

data rates of 2.048Mbits per second.An E- 1 line actually consists of 32 individual

channels, each of which supports 64Kbits per second.

Each 64Kbit/second channel can be configured to carry voice or data traffic.

E-1 CARRIER(P.C.M)

32 Timeslots Total.Each channel holds 8 Bits.Each channel repeats 64,000 times a second

(64 Kbps).30 TIME SLOTS for voice calls.

E-1 FRAME STRUCTURE

The MLLN is an integrated, fully managed, multi-service digital network platform through which service provider can offer a wide range of services at an optimal cost to Business Subscribers. Backed by a flexible Network Management System with powerful diagnostics and maintenance tools, the MLLN can be used to provide high-speed leased lines with improved QoS (Quality of Service), high availability and reliability. The Network Management System also supports Service Provisioning, Network Optimization, Planning and Service Monitoring.

The system offers features such as end to end circuit creation and monitoring, Circuit Loop Test and fault isolation, Alternate re-routing of traffic in case of trunk failure, Software programmability of NTUs, etc.

MLLN VMUX

MLLN USING VMUX

ADVANTAGE

Circuit fault reports generated proactively.

On demand the bandwidth can be increased.

 Protection against the failure of the circuit.

 Centrally managed from Network Management

System.

Easy re-routing and configuration

THANK YOU