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The Subnetwork Encapsulation and Adaptation Layer (SEAL)

Document type: Expired Internet-Draft (individual)
Document stream: ISE
Last updated: 2014-07-21 (latest revision 2014-01-03)
Intended RFC status: Experimental
Other versions: (expired, archived): plain text, pdf, html

ISE State: In ISE Review
Document shepherd: No shepherd assigned

IESG State: Expired (IESG: Dead)
Responsible AD: Ralph Droms
IESG Note: Joe Touch ( is the document shepherd.
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found here:


This document specifies a Subnetwork Encapsulation and Adaptation Layer (SEAL). SEAL operates over virtual topologies configured over connected IP network routing regions bounded by encapsulating border nodes. These virtual topologies are manifested by tunnels that may span multiple IP and/or sub-IP layer forwarding hops, where they may incur packet duplication, packet reordering, source address spoofing and traversal of links with diverse Maximum Transmission Units (MTUs). SEAL addresses these issues through the encapsulation and messaging mechanisms specified in this document.


Fred Templin <>

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