draft-ietf-6lo-dispatch-iana-registry-05.txt   draft-ietf-6lo-dispatch-iana-registry-06.txt 
6lo S. Chakrabarti 6lo S. Chakrabarti
Internet-Draft Ericsson Internet-Draft
Updates: 4944, 6282 (if approved) G. Montenegro Updates: 4944, 6282 (if approved) G. Montenegro
Intended status: Standards Track Microsoft Intended status: Standards Track Microsoft
Expires: March 20, 2017 R. Droms Expires: May 20, 2017 R. Droms
Cisco
J. Woodyatt J. Woodyatt
Nest Nest
September 16, 2016 November 16, 2016
6lowpan ESC Dispatch Code Points and Guidelines 6lowpan ESC Dispatch Code Points and Guidelines
draft-ietf-6lo-dispatch-iana-registry-05 draft-ietf-6lo-dispatch-iana-registry-06
Abstract Abstract
RFC4944 defines the ESC dispatch type to allow for additional RFC4944 defines the ESC dispatch type to allow for additional
dispatch bytes in the 6lowpan header. The value of the ESC byte was dispatch bytes in the 6lowpan header. The value of the ESC byte was
updated by RFC6282, however, its usage was not defined either in updated by RFC6282, however, its usage was not defined either in
RFC6282 or in RFC4944. This document updates RFC4944 and RFC6282 by RFC6282 or in RFC4944. This document updates RFC4944 and RFC6282 by
defining the ESC extension byte code points including registration of defining the ESC extension byte code points including registration of
entries for known use cases at the time of writing of this document. entries for known use cases at the time of writing of this document.
skipping to change at page 1, line 39 skipping to change at page 1, line 40
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on March 20, 2017. This Internet-Draft will expire on May 20, 2017.
Copyright Notice Copyright Notice
Copyright (c) 2016 IETF Trust and the persons identified as the Copyright (c) 2016 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
skipping to change at page 3, line 47 skipping to change at page 3, line 47
octets are left unstructured for the specific use of the extension octets are left unstructured for the specific use of the extension
type: type:
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 1| ESC | ESC EXT Type | Extended Dispatch Payload |0 1| ESC | ESC EXT Type | Extended Dispatch Payload
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 1: Frame Format with ESC Byte Figure 1: Frame Format with ESC Byte
ESC: The left-most byte is the ESC dispatch type containing '0100000' ESC: The left-most byte is the ESC dispatch type containing
'01000000'
ESC Extension Type (EET): It is the first byte following the ESC ESC Extension Type (EET): It is the first byte following the ESC
byte. Extension type defines the payload for the additional dispatch byte. Extension type defines the payload for the additional dispatch
bytes. The values are from 0 to 255. Values 0 and 255 are reserved bytes. The values are from 0 to 255. Values 0 and 255 are reserved
for future use. These values are assigned by IANA. The EET values for future use. These values are assigned by IANA. The EET values
are similar to dispatch values in the 6lowpan header except they are are similar to dispatch values in the 6lowpan header except they are
preceded by the ESC byte. Thus, ESC extension types and dispatch preceded by the ESC byte. Thus, ESC extension types and dispatch
values are using orthogonal code spaces. Though not desirable, values are using orthogonal code spaces. Though not desirable,
multiple ESC bytes MAY appear in a 6lowpan header. Section 3.1 multiple ESC bytes MAY appear in a 6lowpan header. Section 3.1
describes how to handle an unknown ESC dispatch type. describes how to handle an unknown ESC dispatch type.
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[G3-PLC] "http://www.itu.int/rec/T-REC-G.9903-201402-I". [G3-PLC] "http://www.itu.int/rec/T-REC-G.9903-201402-I".
[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an [RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 5226, IANA Considerations Section in RFCs", BCP 26, RFC 5226,
DOI 10.17487/RFC5226, May 2008, DOI 10.17487/RFC5226, May 2008,
<http://www.rfc-editor.org/info/rfc5226>. <http://www.rfc-editor.org/info/rfc5226>.
Authors' Addresses Authors' Addresses
Samita Chakrabarti Samita Chakrabarti
Ericsson
300 Holger Way
San Jose, CA San Jose, CA
USA USA
Email: samitac.ietf@gmail.com Email: samitac.ietf@gmail.com
Gabriel Montenegro Gabriel Montenegro
Microsoft Microsoft
USA USA
Email: gabriel.montenegro@microsoft.com Email: gabriel.montenegro@microsoft.com
Ralph Droms Ralph Droms
Cisco
USA USA
Email: rdroms.ietf@gmail.com Email: rdroms@gmail.com
James Woodyatt James Woodyatt
Nest Nest
Mountain View, CA Mountain View, CA
USA USA
Email: jhw@netstlabs.com Email: jhw@netstlabs.com
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