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	The network below uses port forwarding tables. What happens if host `A` moves by removing its link with `R1` and replacing it with a link with `R3`? How should networks using port forwarding deal with such mobile hosts ?
	Some hosts need to be multihomed, i.e. attached to two different network nodes as shown in the figure below.
	Would this network work correctly with port-forwarding tables if :
	Host `A` uses the same flat address for both links.
	Host `A` uses a different flat address on each of its links
	What are the advantages and drawbacks of flat addresses versus hierarchical addresses ?
	Let us now consider the transient problems that mainly happen when the network topology changes. For this, consider the network topology shown in the figure below and assume that all routers use a distance vector protocol that uses split horizon.
	If you compute the routing tables of all routers in this network, you would obtain a table such as the table below :
	Destination
	Routes on A
	Routes on B
	Routes on C
	Routes on D
	Routes on E
	A
	0
	1 via A
	2 via B
	3 via C
	4 via D
	B
	1 via B
	2 via C
	3 via D
	C
	1 via C
	2 via D
	D
	3 via B
	1 via D
	E

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34009 String information

Component

cnp3-ebook/exercises/network

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read-only

Source string location

../../exercises/network.rst:372 • ../../exercises/network.rst:373 • ../../exercises/network.rst:374 • ../../exercises/network.rst:375 • ../../exercises/network.rst:376

String age

6 years ago

Last updated

9 months ago

Source string age

6 years ago

Translation file

locale/pot/exercises/network.pot, string 48

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