MPLS Application, Services & Best Practices for Deployment Monique Morrow ([email protected]) Martin Winter ([email protected]) Manila, 26th February 2009 1 © 2008 Cisco Systems, Inc. All rights reserved. House Rules Please put your mobile phones into silent mode. Kindly do not take calls inside of this room while the session is going on. Your feedback on the session is extremely important! We assume that you will be awake and keep us awake as well 2 © 2007 Cisco Systems, Inc. All rights reserved. Session Agenda MPLS Layer 3 VPN MPLS Traffic Engineering MPLS Layer 2 VPN Q&A 3 © 2007 Cisco Systems, Inc. All rights reserved. MPLS Layer 3 VPN 4 © 2007 Cisco Systems, Inc. All rights reserved. Agenda MPLS VPN Explained MPLS VPN Services Best Practices Conclusion 5 © 2007 Cisco Systems, Inc. All rights reserved. Prerequisites Must understand basic IP routing, especially BGP Must understand MPLS basics (push, pop, swap, label stacking) 6 © 2007 Cisco Systems, Inc. All rights reserved. Terminology LSR: Label switch router LSP: Label switched path The chain of labels that are swapped at each hop to get from one LSR to another VRF: VPN routing and forwarding Mechanism in Cisco IOS® used to build perinterface RIB and FIB MPBGP: Multiprotocol BGP PE: Provider edge router interfaces with CE routers P: Provider (core) router, without knowledge of VPN VPNv4: Address family used in BGP to carry MPLSVPN routes RD: Route distinguisher Distinguish same network/mask prefix in different VRFs RT: Route target Extended community attribute used to control import and export policies of VPN routes LFIB: Label forwarding information base FIB: Forwarding information base 7 © 2007 Cisco Systems, Inc. All rights reserved. Agenda MPLS VPN Explained Technology MPLSVPN Services Best Practices Conclusion 8 © 2007 Cisco Systems, Inc. All rights reserved. MPLSVPN Technology Control plane—VPN route propagation Data plane—VPN packet forwarding 9 © 2007 Cisco Systems, Inc. All rights reserved. MPLSVPN Technology MPLS VPN Connection Model P P PE PE VPN Backbone IGP P P MPiBGP Session PE Routers P Routers Edge routers P routers are in the core of the MPLS cloud Use MPLS with P routers P routers do not need to run Uses IP with CE routers BGP and doesn’t need to have Connects to both CE and P routers any VPN knowledge Distribute VPN information through Forward packets by looking MPBGP to other PE router with VPN at labels IPv4 addresses, extended community, label P and PE routers share a common IGP 10 © 2007 Cisco Systems, Inc. All rights reserved.
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