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MPLS Application, Services & Best Practices for Deployment - apricot PDF

226 Pages·2009·5.76 MB·English
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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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Feb 26, 2009 Best Practices. □ Conclusion VPNv4: Address family used in BGP to carry MPLSVPN routes. □ RD: Route Sampling and resizing timers.
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