MPLS

January 5, 2018 | Author: Anonymous | Category: Engineering & Technology, Computer Science, Computer Networks
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MPLS

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 Architecture IP Routing Protocol

Routing Information Exchange

Routing Table

Label Information Base (LIB)

Label Generation & Management

Control Component Forwarding Component

Label Forwarding Information Base (LIFB)

Incoming MPLS Packet

Packet Forwarding

Outgoing MPLS Packet

MPLS Architecture • The control component created and maintained labelforwarding 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 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 Provider • 3 popular MPLS service provider in Thailand that is … CAT, True and 3 Broad Band (3BB)

Service 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).

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