LLN Minimal Fragment Forwarding

Document Type Replaced Internet-Draft (6lo WG)
Authors Thomas Watteyne  , Carsten Bormann  , Pascal Thubert 
Last updated 2018-09-20 (latest revision 2018-07-16)
Replaced by RFC 8930
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
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Stream WG state Adopted by a WG
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-6lo-minimal-fragment
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document gives an overview of LLN Minimal Fragment Forwarding. When employing adaptation layer fragmentation in 6LoWPAN, it may be beneficial for a forwarder not to have to reassemble each packet in its entirety before forwarding it. This has been always possible with the original fragmentation design of RFC4944. This document is a companion document to [I-D.ietf-lwig-6lowpan-virtual-reassembly], which details the virtual Reassembly Buffer (VRB) implementation technique which reduces the latency and increases end-to-end reliability in route-over forwarding.


Thomas Watteyne (thomas.watteyne@analog.com)
Carsten Bormann (cabo@tzi.org)
Pascal Thubert (pthubert@cisco.com)

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