20.01.2014 Views

Lectures notes for 2010 - KTH

Lectures notes for 2010 - KTH

Lectures notes for 2010 - KTH

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Router Arbiter Project<br />

Router Arbiter (RA) -http://www.ra.net (July 1994 through March 1998)<br />

• provide a common database of route in<strong>for</strong>mation (network topology<br />

and policies) [Routing Arbiter Database (RADB) became Routing<br />

Assets Database (RADb) http://www.merit.edu/nrd/services/radb.html ]<br />

• promote stability and manageability of networks<br />

Instead of a full mesh connection between providers, all the providers peer with a<br />

central router server. A Router server (RS):<br />

• maintains a database of all in<strong>for</strong>mation operators need to set their<br />

routing policy (written in RIPE 181, see RFC 1786 ⇒ Routing Policy<br />

Specification Language (RPSL))<br />

http://www.merit.edu/internet/documents/internet-drafts/draft-blunk-rpslng-08.txt )<br />

• does not <strong>for</strong>ward packets or per<strong>for</strong>m any switching function<br />

• a distributed rover runs at each RS and collects in<strong>for</strong>mation which the<br />

central network management system later queries.<br />

Maguire Router Arbiter Project 7: 58 of 70<br />

maguire@kth.se <strong>2010</strong>.03.21 Internetworking/Internetteknik

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!