Communicating Prefix Cost to Mobile Nodes
draft-mccann-dmm-prefixcost-03

Document Type Expired Internet-Draft (individual)
Last updated 2016-10-13 (latest revision 2016-04-11)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-mccann-dmm-prefixcost-03.txt

Abstract

In a network implementing Distributed Mobility Management, it has been agreed that Mobile Nodes (MNs) should exhibit agility in their use of IP addresses. For example, an MN might use an old address for ongoing socket connections but use a new, locally assigned address for new socket connections. Determining when to assign a new address, and when to release old addresses, is currently an open problem. Making an optimal decision about address assignment and release must involve a tradeoff in the amount of signaling used to allocate the new addresses, the amount of utility that applications are deriving from the use of a previously assigned address, and the cost of maintaining an address that was assigned at a previous point of attachment. As the MN moves farther and farther from the initial point where an address was assigned, more and more resources are used to redirect packets destined for that IP address to its current location. The MN currently does not know the amount of resources used as this depends on mobility path and internal routing topology of the network(s) which are known only to the network operator. This document provides a mechanism to communicate to the MN the cost of maintaining a given prefix at the MN's current point of attachment so that the MN can make better decisions about when to release old addresses and assign new ones.

Authors

Pete McCann (peter.mccann@huawei.com)
John Kaippallimalil (john.kaippallimalil@huawei.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)