A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : IPv6 Label Switching Architecture (6LSA)
Author(s) : S. Chakravorty
Filename : draft-chakravorty-6lsa-00.txt
Pages : 28
Date : 2004-7-9
This specification provides an architectural framework, called IPv6 Label
Switching Architecture or 6LSA, for an end-to-end, IP-centric packet switching
technique that uses the IPv6 packet header Flow Label, header extensions, and
unique routing algorithms, the latter two when needed, to establish IPv6-based
label switched paths. The label switched paths, called 6LSPs, provide application
and user specified routes for speedier transport of packets and as means for
quality of service (QoS) solutions as in IPv4-based MPLS or ATM. Since MPLS-like
protocol labeling will be redundant for IPv6 and since there are no widely-known
QoS deployments of IPv6 over any of the layer 2 switching mechanisms such as ATM,
the 6LSA framework fills the technology void without the link overhead from
extraneous layer 2 labeling and signaling of MPLS, or packet fragmentation and
added signaling as in ATM. Through the use of fast switching of 20-bit labels
instead of 128-bit IPv6 address look-ups, the architecture presented here also
provides processing savings through significantly reduced address fetches for the
low-powered, handheld devices.
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