14.6. STUDY QUESTIONS

  1. Describe some of the issues that arise when using Layer 2 Ethernet switching to build an access network.

  2. Describe the relative merits of placing SDPs (i) at the border between the access and core network compared to (ii) placing the SDPs at the outer edge of the access network.

  3. Describe some optimizations that are possible when using VPLS as the infrastructure for carrying multicast DSL traffic across the access network.

  4. Imagine a network in which the SDPs are at the outer edge of the access network. Describe the scaling considerations when LDP is used to provide the transport LSPs interconnecting the SDPs. Describe the scaling considerations when RSVP is used instead.

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