provider opportunities for enterprise mpls

Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidential www.juniper.net 1

Provider Opportunities for Enterprise MPLS

APRICOT 2006, Perth

Matt Kolon

[[email protected]]

2Copyright © 2005 Juniper Networks, Inc. www.juniper.net

NGN Challenges

• Essential Application and service support

• New and legacy requirements

• Quality

• Ensure appropriate QoS and reliability

• Convergence with Virtualization

• Lower capex and opex by network optimization

MPLS addresses all three of these challenges!

Opportunities for network infrastructure savings


MPLS Addresses Enterprise Challenges

In three critical NGN areas, MPLS helps:

Connectivity:

Policy:

Services:

Collapse traffic onto a single infrastructure, but maintain separation, privacy, policy

Each stream, group, service or application gets the required QoS, availability, etc.

Next-generation and legacy interfaces, services, apps supported without changes


Connectivity: Convergence with Virtualization

More services on fewer networks saves money• Convergence requires QoS, VPNs, traffic

engineering, L1 and 2 support, etc. Services never want to be converged

• Differences in QoS requirements, routing, availability, privacy, regulatory needs

• Each service should experience its network as custom-built for it

How can we help customers converge, but not seem to from a service point of view?


Many uses for MPLS in the Enterprise

PE-CE IPsec

CE-CE IPsec

Inter-AS MPLS

CoC MPLS

CoC MPLS

MPLS VPNs

•Simple ATM or Frame VPN replacement•Outsourced IP VPN•Internet access links•Point-to-point TDM replacement circuits•Hierarchical VPN carriage or peering•Layered security element•Hybrid carrier/enterprise network


Different Networks for Different Apps

Internet

PSTN / TDM

ATMSales

Mktg

AcctgOps

Sales

Sales

Mktg

Acctg

Ops

Ops


MPLS supports virtualized convergence

Sales

Mktg

AcctgOps

Sales

Sales

Mktg

Acctg

Ops

Ops

IP / MPLS

Internet

ATM

VPNs

TDM

Not really a “cloud” any more, is it?


Service Quality through Policy

Essential applications require highly available service, usually with good QoS

Virtualization ensures separation of services, yet each service needs its own treatment:• Traditional QoS (delay, bandwidth, loss,

etc)• Availability (network resilience)• Security (privacy, separation)

MPLS supports both standards-based and unique solutions in these three critical areas

Without attention to service quality, no converged network can meet business goals

Service Quality through Policy


Service Quality Mechanisms

QoSDiffservMultifield ClassificationFilter-based Forwarding

AvailabilitySecondary Paths

Fast RerouteFast IGPs

BFD

Determinism / PlanningTraffic EngineeringDS-TE

SecurityPolicing

FirewallsMonitoring

Policy ApplicationDeterministic Routing

Separate MPLS paths or VPNs


Native service environments preserve investments Enterprise networks are always in flux

• Old applications and services phasing out, new ones phasing in

Any convergence solutions must flexibly support this condition of continual change

Support must sometimes be generic (e.g. Internet, IP) and sometimes specific (e.g. ATM CES, TDM)

MPLS supports specific applications with standards-based, partner, and proprietary solutions

Application and Service Support


Native Service Environments

InterfacesATMFrameEthernetSerialAny speed

Next Gen ServicesIP RoutingL3VPNsTransparent LANsP2P Ethernet

Legacy ServicesTDMDLSWPWE3 SolutionsFrame / ATM VPNs

Capable of low-cost and flexible reconfiguration and migration


MPLS Paths and VPNs

MPLS labels are assigned to identify a path, location, or both Locations and paths together create VPNs

Acctg

Sales

Sales

Ops

Acctg Ops

Enterprises can use VPNs to subdivide networks in whatever way works best for them:

• By application

• By service

• By user group

• By security level


Hybrid Enterprise / Provider MPLS

MPLS VPNs have been a very successful service for many providers

Enterprises who build their own MPLS VPNs can link them with providers’, thus creating a hybrid

Enterprises use these services when they are more cost-effective than building their own VPNs

Remote workers and non-MPLS offices may access the combined MPLS network via encrypted tunnels

ipsec

pptp


Carrier of Carrier MPLS

Geographically distributed enterprises often have “islands” of network services requiring interconnection

MPLS interconnection exists for services at layers 1, 2, and 3 (e.g. pseudowires, Ethernet, ATM, IP, etc.)

Providers offer “carrier-of-carrier” services to their MPLS customers, both carriers and enterprises

MPLS networks may also be linked by dark fiber, private lines, or other “non-MPLS” methods


Summary: Benefits of MPLS in the NGN

All business applications are supported

• Legacy or NextGen, critical to best-effort

Each application is assured the experience (security, availability, performance) it requires

Converged networks that “seem” separate

• One bill for one network infrastructure from your provider, yet many services / apps

• One network to manage, control, secure, maintain, and regulate


MPLS Technology 101

MPLS uses small labels (placed after the L2 header) to switch traffic along a path

These paths co-exist with and depend on IP, and are set up and maintained by RSVP and LDP

IP routing and forwarding proceeds as normal using standard protocols and procedures

Multiple tags can be used to tunnel paths inside each other, or to identify endpoints

That’s it! Routers use this infrastructure to build MPLS-based services like VPNs

provider opportunities for enterprise mpls

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