I-D ACTION:draft-ashw-mpls-te-feed-00.txt
Internet-Drafts@ietf.org Fri, 22 October 1999 14:09 UTC
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Subject: I-D ACTION:draft-ashw-mpls-te-feed-00.txt
Date: Fri, 22 Oct 1999 06:56:41 -0400
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A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : IMPROVING TOPOLOGY DATA BASE ACCURACY WITH LSP FEEDBACK VIA CR-LDP Author(s) : P. Ashwood-Smith, B. Jamoussi, D. Fedyk, D. Skalecki Filename : draft-ashw-mpls-te-feed-00.txt Pages : 10 Date : 21-Oct-99 One key component of traffic engineering is a concept known as constraint based routing. In constraint based routing a topology database is maintained on all participating nodes. This database contains a complete list of all the links in the network that participate in traffic engineering and for each of these links a set of constraints which those links can meet. Bandwidth, for example, is one essential constraint. Since the bandwidth available changes as new LSPs are established and terminated the topology database will develop inconsistencies with respect to the real network. It is not possible to increase the flooding rates arbitrarily to keep the database discrepancies from growing. We propose a new mechanism whereby a source node can learn about the successes or failures of its path selections by receiving feedback from the paths it is attempting. This fed-back information can be incorporated into subsequent route computations, which greatly improves the accuracy of the overall routing solution by significantly reducing the database discrepancies. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ashw-mpls-te-feed-00.txt Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ashw-mpls-te-feed-00.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ashw-mpls-te-feed-00.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft.
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