M P L SM P L S

MPLS Overview

• MPLS or Multiprotocol label switching is a new network protocol that defined a mechanism for

packet forwarding in network router. • It was originally developed to provide faster packet

forwarding than traditional IP routing by IETF.• MPLS is an interested solution that it will play an

important role in the routing, switching and forwarding of packets through the next-generation

network in order to meet the service demands of the network users.

MPLS Overview

• Traditional IP networks send and receive data by router

using IP packet. • MLPS also uses IP addresses

with an identifier (label) to identify end point and

intermediate switches and routers .

• MPLS can help packet forwarding send and receive the data faster than tradition IP routing.

MPLS ArchitectureIP Routing Protocol

IP Routing Protocol

Routing TableRouting Table

Label Generation & Management

Label Generation & Management

Label Information Base (LIB)

Label Information Base (LIB)

Label Forwarding Information Base

(LIFB)

Label Forwarding Information Base

(LIFB)

Packet ForwardingPacket Forwarding

Routing Information Exchange

Control Component

Forwarding Component

Outgoing MPLS Packet

Incoming MPLS Packet

MPLS Architecture• The control component created and maintained label-

forwarding information surrounded by a group of interconnected label switches which IP routing

protocols can exchange routing information and another component manages label distribution.

• The forwarding component uses a label-forwarding database maintained by a label switch to perform the forwarding of data packets based on labels carried by packets which packet ask the LFIB for proper forwarding in an outgoing direction.

How do MPLS work?• MPLS operates at an OSI model layer between Layer 2

(Data Link Layer) and Layer 3 (Network Layer), so it is often referred as a Layer 2.5 protocol.

• The main function of MPLS is organizing the path of packet or new routing in the particular path which

referred to as a LSP (Label Switch Path).• MPLS adds a Label in front of a packet as another

header.

How do MPLS work?

• Routers must be label-switched routers (LSRs) and each LSR must maintain a valid mapping from the

label of an incoming packet.• The router uses the label to identify the LSP.

• This label looks up the LSP in its own forwarding table to determine the best path over which to

forward the packet and the label to use on this next hop.

How do MPLS work?

Advantages

• QoS capabilities• Performance upgrade, increased response time and

improved application performance • Disaster recovery

• Future-proofing the network• MPLS services is cost-effective

Disadvantages

• Inability of MPLS to provide application-level routing intelligence, a fundamental component for voice

delivery

Service ProviderService Provider• MPLS (IP VPN) is a data communication

service, which work in a full mesh network, provide a high reliability and

make employee and organization more convenience via LAN, or intranet

including E-Commerce applications.• MPLS-network consists of routers and

switches connected to transport facilities such as fiber optic links.

Customer connects to core network via multiservice edge (MSE) router.

Service ProviderService Provider

• 3 popular MPLS service provider in Thailand that is …

CAT, True and 3 Broad Band (3BB)

Service ProviderService Provider

• CAT provide 2 type of service that are ACASIA Direct IP:

• ACASIA Direct IP• ACASIA Dial IP

• True provide 2 types of MPLS service• MPLS VLL • MPLS VLL

• 3BB (3 broad band) provide IPMPLS

The future of MPLS

MPLS Transport Profile (MPLS-TP) in the future, basically the same as MPLS but with key new features such as Quality of Service, fast reroute and

put that into optical and transport networks that have typically been based on TDM only, it also

improve the level of control from basic MPLS. In addition, the next key evolution of MPLS is an ideal

technology to use for 4G wireless Long Term Evolution (LTE).

Thank You…Thank You…