MPLS VPN Design Guidelines

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MPLS VPN Design Guidelines

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1. What are the drawbacks of using unnumbered links? Individual WAN interfaces are no longer reachable by ping or telnet if you use unnumbered links. 2. Where should you use unnumbered links in the MPLS backbone? Unnumbered links are recommended in the ATM parts of the MPLS backbone. 3. Where would you use unnumbered links between PE and CE routers? Using unnumbered links between PE and CE routers is highly discouraged. There are, however, applications like dial-up access that benefit from unnumbered links. 4. Why would you use private address space in your IP backbone? IP backbones usually only use private address space if there is no public address space available. 5. What...

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