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<!doctype html public "-//W30//DTD W3 HTML 2.0//EN"><HTML><TITLE>ADVANCED NETWORK ARCHITECTURE GROUP</TITLE><center><!WA0><A HREF="http://www.lcs.mit.edu/web_project/anaweb/ANA_Home.html"><!WA1><img src="http://www.lcs.mit.edu/web_project/Brochure/ana/analine.gif"></a></center><p><center><table border><tr> <td><!WA2><IMG SRC=http://www.lcs.mit.edu/web_project/Brochure/ana/clark.gif></td> <td> <!WA3><IMG SRC=http://www.lcs.mit.edu/web_project/Brochure/ana/jtw.gif></td> <td> <!WA4><IMG SRC=http://www.lcs.mit.edu/web_project/Brochure/ana/sollins.gif></td></tr><tr> <td><address><b>David D. Clark</b>, <br>Senior Research <br>Scientist</address></d> <td><address><b>John T. Wroclawski</b>, <br>Research Scientist</address></td> <td><address><b>Karen R. Sollins</b>,<br>Research Scientist</address></td></tr></table></center><BODY><p>The Advanced Network Architecture group defines networkprotocols and methods for the information infrastructure ofthe future. Guided by "real-world" requirements, we intendto influence all levels of network design throughengineering studies, prototype development, and observationof existing networks.<p>The group's Information Mesh project, for example, isdeveloping a network infrastructure that finds and relatesinformation, rather than simply moving it around. In thisview, the network-application interface accesses a global"mesh" of data and relationships that may be reviewed,searched, and manipulated. Individual data elements arecontrolled through specified access and use policies. Theinfrastructure presents a uniform interface throughmechanisms that locate, retrieve, and smoothly integratethese data.<p>Naming and linking architectures are critical to the meshdesign. The former, based on a model similar to that ofhuman society, uses hints and locality to handle trillionsof objects whose lifetimes range from seconds to centuries.The linking architecture, meanwhile, captures the web ofrelationships that grows as information is used.<p>Tomorrow's networks also will demand better management ofbandwidth and buffering resources. This is crucial to thedevelopment of integrated service networks, which combinetelephony, data, and entertainment. We have proposed a newnetwork service model (with appropriate algorithms) thatoffers high-quality service for a wide range ofapplications. The Integrated Services Internet project, acollaboration of several research organizations, iscurrently developing standards and techniques to deploythis model on the Internet.<p>Network protocol designers also must provide higherperformance, security, and flexibility. Our ApplicationLevel Framing protocol framework meets these demands byseparating the protocol processing unit (used for errorrecovery, flow control, and similar management functions)from the multiplexing unit (used to place data on thecommunication channel). The separation leads to a simple,modular style of protocol design in which each applicationuses only the required functions. Results include improvedperformance and a better match with the demands of evolvingapplications.<p>The group collaborates with academic and industrialpartners and participates in such efforts as ARPA's DARTnetproject and the Aurora gigabit testbed.</BODY><p><!WA5><a href="http://www.lcs.mit.edu/web_project/Brochure/contents.html"><!WA6><img align=left src=http://www.lcs.mit.edu/web_project/Brochure/icons/contents_motif.gif></a><!WA7><a href="http://www.lcs.mit.edu/web_project/Brochure/psr/psr.html"><!WA8><img align=left src=http://www.lcs.mit.edu/web_project/Brochure/icons/next_group_motif.gif></a></HTML>⌨️ 快捷键说明
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