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IP Multicast, Volume II: Advanced Multicast Concepts and Large-Scale Multicast Design, First Edition by Arvind Durai, Ray Blair, Josh Loveless

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Chapter 6

Advanced Multicast Troubleshooting

IP Multicast, Volume 1 introduces a basic methodology for troubleshooting IP multicast networks. This methodology concentrates on implementations of Any-Source Multicast (ASM) using PIM Sparse-Mode (PIM-SM). To review quickly, there are three ordered steps in this methodology:

1. Receiver check

2. Source check

3. State verification

These fundamental steps of troubleshooting never change, even in advanced multicast designs. As discussed in this book, there are many new protocols and nuances involved in advanced designs. Cross-domain forwarding of multicast over the Internet is a great example. Interdomain multicast introduces Multicast Source Discovery Protocol (MSDP) and Border Gateway Protocol (BGP) ...

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