What is MPLS network role in National Internet Backbone?

 What is NIB?

NIB is the abbreviated form of "Nation Internet Backbone", It has been introduce in the telecommunication network for Internet Service Provider to meet the customer requirement with low capital investment in the long distance transmission equipment or backbone media . Nation Internet Backbone is based on the MPLS mechanism. There are various phases implemented in the NIB regarding Data speed with converged services. Now a day without MPLS architecture no any ISP provide the multiple service with same network. It is a special types of Routers that is connected in a mesh topology  and work as P router, PE router concepts,  we will know more about this in that blog.

Image of MPLS Technology.

What is MPLS?

Multi Protocol Label Switching is work in the Packet-Switched network and it communicate at  TCP/IP layer . It is considered between layer 2 and layer 3  so MPLS  often nkown as " Layer 2.5" Protocol. MPLS has designed to carries both types of client services either circuit-based and packet-based. MPLS  work most efficient manner  for class of service and quality of service.

MPLS is a Packet-forwarding technology which used labels for data  forwarding decision. 

  What is a MPLS header?

MPLS header Play most important role in MPLS technology , it contains one or more "label" that is called a label stack. MPLS header has carries the MPLS packets.

There are some fields in each label stack:

1. 20-bit label.
2. 3-bit label.

3. 1-bit stack flag

4. 8-bit TTL

Each label stack has four field in the MPLS network.

MPLS functions and Routers:

1. Label

2. Label creation.

3. SWAP

4. PUSH

5. POP

6. LER

7. LSR

8. Ingress

9. FEC

Label:-It is defined the route and encapsulate in layer-2 header with the packet . The receiving routers checks the packet label and forward the packet to the next hop.Packets travel in mpls backbone as a label switching based.

Label Creation:- Router routing table create a 20 bit unique label.

SWAP:- Router replaced the incoming label with new outgoing label and forward it to next hop router.

tpsntechguru

I'm tpsntechguru....................... Dreaming to learn in Telecommunication & Networking concepts from anywhere with your Mobile, PC,& Laptop then this is the right place for you. I am working more then 12 years and know the importance of this field in our day to day living standard. Become telecom professional/ network administrator and fill this prestigious service. This will offer the most demanded service in future. Thanks for Reading .....................

Share this post