| The router uses the network address to
identify the destination network (LAN) of a packet within an
internetwork.
The graphic shows three network numbers
identifying segments connected to the router.
For some network layer protocols, this
relationship is established by a network administrator who assigns
network host addresses according to a predetermined internetwork
addressing plan. For other network layer protocols, assigning host
addresses is partially or completely dynamic. Most network protocol addressing
schemes use some form of a host or node address. In the graphic, three
hosts are shown sharing the network number 1.
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