Unformatted text preview: NA can be found in RFC 1700 SAS Institute Inc.
Cary, NC SAS/C & C++ Compiler R&D Slide 12
Feb. 1998 C Socket Programming Tutorial SHARE Session 5958 How stuff gets around (routing)
U U TCP/IP packets are routed based on their
destination IP address (ex: 10.24.2.123)
Packets are passed from one network segment to
another by machines called “routers” until the
packet arrives at the network segment attached to
the host with the destination IP address.
Routers that act as gates to larger networks are
called gateways. SAS Institute Inc.
Cary, NC SAS/C & C++ Compiler R&D Slide 13
Feb. 1998 C Socket Programming Tutorial SHARE Session 5958 Name Resolution Processing
U Associates an IP address to a “name” (hostname)
Structured method of identifying hosts within an internet
The Domain Name System (DNS) implements a hierarchical
naming scheme which maps names like “mvs.sas.com” to
an IP address
DNS is implemented by a set of cooperating servers
Machines that process DNS requests ar...
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This document was uploaded on 02/14/2014.
- Summer '12