题目内容

22. Can you estimate the number o routing table entriesin intra-AS and inter-AS routers? (Estimate the rangeor order o magnitude.)

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23. How do routing protocols in zebra exchangemessages with other routers and update routingtables in the kernel?

24. How does a router know through IGMP whetherhosts in its subnet have joined a multicast group?

25. Does a router know exactly which hosts have joineda multicast group?

26. Source-based vs. core-based multicast tree?(Compare their number o states and scalability.)