1. An Application of VoIP and MPLS Advisor: Dr. Kevin Ryan
For:
Jitesh Inc.
By:
Jitesh Kunder

2. Overview Introduction Setup at Jitesh Inc. Introduction to MPLS
Project Description
Project Status
Experience at Jitesh Inc.

3. Introduction Leading player in the field of expertise
Two Major departments in IT are: )Networking – Provision and maintenance of computer and network support
2)Telecommunication – Provision and maintenance of telephone service and communication

4. Current Setup: IT Department
Roles & Responsibilities :
1) Networking Team:
Provision and maintenance of computers
Providing network support to the users
Maintenance and upgrade of the various Servers
Taking data backup and providing this data whenever required
Ensuring data security by making data available to authorized users
Installing various application soft wares like antivirus, office soft wares and providing timely updates
Continue

5. Current Setup: IT Department
2) Telecommunication Team:
Setting up the infrastructure and providing telephone service to all the employees
Creating a communication link between distant locations like conference bridges to keep these offices connected at all times
Maintenance and upgrades when required

6. Current Network Structure
There are separate dedicated lines for Voice and Data communication between each locations

7. Current Network Structure
Advantages:
- Both departments can handle their own issues and hence management is simpler
- Any upgrades required, need not be done on both the networks

8. Current Network Structure
Disadvantages:
- The expense to maintain two separate lines for voice and data is much higher
- There are separate vendors for both these lines and co-ordination becomes difficult

9. Proposed Network Structure
Goal of the Company: Provide single line for Voice communications and for data between different locations using MPLS connection.

10. Introduction

11. Label Switch Routers Ingress LSR Egress LSR Intermediate LSR
Ingress LSRs allow an IP packet to enter the MPLS network by adding to them a MPLS label. These routers receive a packet that is not labeled yet, insert a label (stack) in front of the packet, and send it on a data link.
Egress LSR
Similarly Egress LSRs remove the MPLS labels from the packet thus, indicating the end of MPLS network. Ingress and egress LSRs are edge LSRs.
Intermediate LSR
Intermediate LSRs receive an incoming packet that is already labeled by ingress or another intermediate LSR. It is here that label stacking actually takes place. MPLS labels are either stacked or removed as per the requirement and then transported to the desired destination.

12. Description Multi-protocol label switching (MPLS)
MPLS is a technique and not a service
Embedded on an existing layer like the IP layer
Uses the technique of packet forwarding based on labels
Routers just have to check the labels and not the destination IP address
Packets are forwarded by switching the labels and not touching the IP addresses

13. Advantages Advantages of MPLS
The use of one unified network infrastructure
Better IP over ATM integration
Border Gateway Protocol (BGP)-free core
The peer-to-peer model for MPLS VPN
Optimal traffic flow
Traffic engineering

14. MPLS Header

15. MPLS Header The Header is broken into 20-3-1-8 bits
First 20 bits form the label value and their value can be 0 to or 1,048,575
Bits 20 to 22 are the three experimental (EXP) bits. Quality of service (QoS) can be set using these bits.
Bit 23 is the Bottom of Stack (BoS) bit
Bits 24 to 31 are used for Time To Live (TTL)

16. Basic Operation

17. Label Stacking MPLS-capable routers do not break the IP packets
More than one packet required to understand the actual destination of the packet
BS bit is set to 1 indicating it to be the last label

18. Class and Path Forward Equivalence Class Label Switched Path
Class assigned every time a packet enters the MPLS network
All packets belonging to the same FEC have the same label
Decided by the Ingress LSR
Label Switched Path
Series of routers through which the packets have a medium to reach the destination
Packets belonging to the same FEC have the same label

19. Project Description
Jitesh Inc. has a wide range of products, the call center for product support is located in UK and all the customers are based in the US
Call route:
Call on toll free number call routed to the PBX office in US  PBX in US connects the PBX at UK
Dedicated T-1 lines are provided by the AT&T.

20. Current Network Set-up
Company pays for Toll free calls as well as dedicated T-1 lines.

21. Current Network Set-up
Advantages:
- Cost effective
The company would otherwise have to pay for an international Toll Free number which would be very expensive

22. Current Network Set-up
Disadvantage:
Quality of service (QOS)
Down-time for the connection
Bandwidth
Required more bandwidth
Cost Savings
Expensive compared to the proposed MPLS solution

23. Proposed Network Structure
Single dedicated MPLS connection for Voice and Data

24. Proposed Network Structure
Advantages over conventional set-up:
Better QoS
Faster communication
Single dedicated line for Voice communication and Data communication
Annual reduction in costs by approx. 60%
Disadvantage over conventional set-up:
- High initial investment cost of network set-up

25. Proposed Network Structure
Break-even
Point

26. Project Status Currently deployed in phases Over budget
Quality of Service - average
Approval from management

27. Responsibilities at Jitesh Inc.
Call Analysis (Feasibility Study)
Cost Analysis
Interaction with prime vendors
Presentation to the management

28. Experience at Jitesh Inc.
Enhanced technical skills
Telecommunication
Network Infrastructure
Software tools
Communication with vendors and upper management