A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Link Buffering for MANETs
Author(s) : T. Clausen, K. Mase
Filename : draft-clausen-manet-linkbuffer-00.txt
Pages : 14
Date : 2004-10-19
A number of MANET routing protocols employ the ability to temporarily
buffer undeliverable IP datagrams until a route to a destination
becomes available. This is indeed the case for reactive protocols,
which largely are based on the ability to store an undeliverable IP
datagram while a route discovery operation is carried out. Current
specifications of proactive routing-protocols do, however, also
indiate that they may benefit from such a mechanism: while a local
link breakage may imply that a selected route to a given destination
breaks, buffering an undeliverable IP datagram may allow a local
topology discovery mechanism to select an alternative route.
This document describes a generic mechanism for buffering IP
datagrams in MANETs. The mechanism is based on the idea that while a
local link may make a route to a destination fail, it does not imply
that an alternative route to that destination is not available.
Hence, IP datagrams for transmission along that route are buffered to
allow the routing protocol time to construct an alternative route.
The IP datagram is discarded only if the routing protocol hasn?"Á"ãt been
able to provide an alternative route within a determined small delay.
We note, that this specification does not mandate a required behavior
for MANET routing protocols. Rather, since the mechanisms currently
employed in the four existing MANET routing protocol specification
are similar in what they try to accomplish, it is the goal of this
specification to generalize and expand on these mechanisms, thereby
provide a framework for (i) discussing and refining the mechanism in
isolation and (ii) providing a common element, which may be usefull
for multiple MANET routing protocols.
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