MPLS networking at PSP Co Multi-Protocol Label Switching Presented by: Hamid Sheikhghanbari 1

MPLS networking at PSP Co PSP Co.'s networking needs How MPLS service meets the needs Motivation MPLS Basics Operation Advantages and Disadvantages Alternatives to MPLS 2

PSP Co.'s networking needs Establishing a online connection between Office and factories for application Establishing VOIP between office and factories Centralized the network Supporting and troubleshooting the network more efficiently Accelerate and enhance the company's efficiency 3

Why MPLS? Needed a single infrastructure that supports multitude of applications in a secure manner Provide a highly scalable mechanism that was topology driven rather than flow driven Load balance traffic to utilize network bandwidth efficiently Allow core routers/networking devices to switch packets based on some simplified header Ultra fast forwarding VPN 4

Motivation IP o The first defined and used protocol o De facto the only protocol for global Internet working … but there are disadvantages 5

Motivation (cont.) IP Routing disadvantages o Connectionless - e.g. no QoS o Large IP Header - At least 20 bytes o Routing in Network Layer - Slower than Switching o Usually designed to obtain shortest path - Do not take into account additional metrics 6

Motivation (cont.) ATM o connection oriented - Supports QoS o fast packet switching with fixed length packets (cells) o integration of different traffic types (voice, data, video) … but there are also disadvantages 7

Motivation (cont.) ATM disadvantages o Complex o Expensive o Not widely adopted 8

Motivation (cont.) Idea: Combine the forwarding algorithm used in ATM with IP. 9

MPLS Basics Multi Protocol Label Switching is arranged between Layer 2 and Layer 3 10

MPLS Basics (cont.) MPLS Characteristics o Mechanisms to manage traffic flows of various granularities (Flow Management) o Is independent of Layer-2 and Layer-3 protocols o Maps IP-addresses to fixed length labels o Supports ATM, Frame-Relay and Ethernet 11

MPLS Basics (cont.) Generic label format 12

MPLS Operation The following steps must be taken for a data packet to travel through an MPLS domain. o label creation and distribution o table creation at each router o label-switched path creation o label insertion/table lookup o packet forwarding 13

MPLS Operation Example 14

MPLS Advantages Improves packet-forwarding performance in the network Supports QoS and CoS for service differentiation Supports network scalability Integrates IP and ATM in the network Builds interoperable networks Use of special services, such as traffic engineering 15

MPLS Disadvantages An additional layer is added The router has to understand MPLS 16

Alternative to MPLS Frame Relay Point to Point ATM Leased Line 17

Protocol Comparison 18

References l_Switchinghttp://en.wikipedia.org/wiki/Multiprotocol_Labe l_Switching mpls-vpn.htmlhttp://t1rex.blogspot.com/2010/06/ip-vpn-vs- mpls-vpn.html

MPLS networking at PSP Co Q & A 20

MPLS networking at PSP Co Thank you! 21