LoWPAN fragment Forwarding and Recovery

Document Type Expired Internet-Draft (individual)
Authors Pascal Thubert  , Jonathan Huii 
Last updated 2010-06-04
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Considering that the IPv6 minimum MTU is 1280 bytes and that an an 802.15.4 frame can have a payload limited to 74 bytes in the worst case, a packet might end up fragmented into as many as 18 fragments at the 6LoWPAN shim layer. If a single one of those fragments is lost in transmission, all fragments must be resent, further contributing to the congestion that might have caused the initial packet loss. This draft introduces a simple protocol to forward and recover individual fragments that might be lost over multiple hops between 6LoWPAN endpoints.


Pascal Thubert (pthubert@cisco.com)
Jonathan Huii (jhui@archrock.com)

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