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-01.txt
Pages : 39
Date : 2005-2-22
This specification provides an architectural framework, called IPv6
Label Switching Architecture or 6LSA, for an end-to-end, IP-centric
packet transmission technique that uses the IPv6 packet header Flow
Label 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) or other service delivery. Through fast swapping of
20-bit labels instead of 128-bit IPv6 address look-ups, the
architecture also provides memory and processing savings, the latter
through significantly reduced address fetches for the low-powered,
handheld devices. Although the label from the source is delivered to
the destination unmodified, conforming to the basic tenet of the
existing defintion of the 3-tuple flow, the intermediate network
nodes in 6LSA are allowed to temporarily replace the original label
with a label of local significance. This enables 6LSA flows to be
hop-specific although session-based and as such a unique QoS delivery
technique for bandwidth constrained media. 6LSA also enhances
security since disruption by man-in-the-middle attacks through label
changes may not affect flows end-to-end but only over a single hop.
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