The Routing Table
At the heart of IPv4 routing is the route table, which contains a number of entries detailing how to get to various destinations. The route table is consulted when the exchange of data between two hosts is required. The netstat -r command is used to view the entries in the route table. The following example shows the route table for the hostname ultra10:
ultra10# netstat -r Routing Table: IPv4 Destination Gateway Flags Ref Use Interface -------------------- -------------------- ----- ----- ------ --------- ultra-net ultra10 U 1 177 hme0 multicast ultra10 U 1 0 hme0 sparc-net ultra-r1 UG 1 255 hme0 localhost localhost UH 3 635 lo0
Notice from this code that the first two columns are displaying names, rather than IP addresses. ...
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