ROLL Working Group M. Robles Internet-Draft Ericsson Intended status: Informational M. Richardson Expires: March 17, 2016 SSW September 14, 2015 When to use RFC 6553, 6554 and IPv6-in-IPv6 draft-robles-roll-useofrplinfo-01 Abstract This document states different cases where RFC 6553, RFC 6554 and IPv6-in-IPv6 encapsulation is required to set the bases to help defining the compression of RPL routing information in LLN environments. Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on March 17, 2016. Copyright Notice Copyright (c) 2015 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Robles & Richardson Expires March 17, 2016 [Page 1] Internet-Draft Useof6553 September 2015 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Terminology and Requirements Language . . . . . . . . . . . . 3 3. Sample/reference topology . . . . . . . . . . . . . . . . . . 4 4. Use cases . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5. Storing mode . . . . . . . . . . . . . . . . . . . . . . . . 7 5.1. Example of Flow from RPL-aware-leaf to root . . . . . . . 7 5.1.1. Summary of the use of headers . . . . . . . . . . . . 8 5.2. Example of Flow from root to RPL-aware-leaf . . . . . . . 8 5.2.1. Summary of the use of headers . . . . . . . . . . . . 8 5.3. Example of Flow from root to not-RPL-aware-leaf . . . . . 9 5.3.1. Summary of the use of headers . . . . . . . . . . . . 9 5.4. Example of Flow from not-RPL-aware-leaf to root . . . . . 9 5.4.1. Summary of the use of headers . . . . . . . . . . . . 10 5.5. Example of Flow from RPL-aware-leaf to Internet . . . . . 10 5.5.1. Summary of the use of headers . . . . . . . . . . . . 10 5.6. Example of Flow from Internet to RPL-aware-leaf . . . . . 11 5.6.1. Summary of the use of headers . . . . . . . . . . . . 11 5.7. Example of Flow from not-RPL-aware-leaf to Internet . . . 11 5.7.1. Summary of the use of headers . . . . . . . . . . . . 11 5.8. Example of Flow from Internet to not-RPL-aware-leaf . . . 12 5.8.1. Summary of the use of headers . . . . . . . . . . . . 12 5.9. Example of Flow from RPL-aware-leaf to RPL-aware-leaf . . 12 5.9.1. Summary of the use of headers . . . . . . . . . . . . 13 5.10. Example of Flow from RPL-aware-leaf to not-RPL-aware-leaf 13 5.10.1. Summary of the use of headers . . . . . . . . . . . 13 5.11. Example of Flow from not-RPL-aware-leaf to RPL-aware-leaf 13 5.11.1. Summary of the use of headers . . . . . . . . . . . 14 5.12. Example of Flow from not-RPL-aware-leaf to not-RPL-aware- leaf . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5.12.1. Summary of the use of headers . . . . . . . . . . . 14 6. Non Storing mode . . . . . . . . . . . . . . . . . . . . . . 15 6.1. Example of Flow from RPL-aware-leaf to root . . . . . . . 15 6.1.1. Summary of the use of headers . . . . . . . . . . . . 15 6.2. Example of Flow from root to RPL-aware-leaf . . . . . . . 16 6.2.1. Summary of the use of headers . . . . . . . . . . . . 16 6.3. Example of Flow from root to not-RPL-aware-leaf . . . . . 16 6.3.1. Summary of the use of headers . . . . . . . . . . . . 16 6.4. Example of Flow from not-RPL-aware-leaf to root . . . . . 17 6.4.1. Summary of the use of headers . . . . . . . . . . . . 17 6.5. Example of Flow from RPL-aware-leaf to Internet . . . . . 17 6.5.1. Summary of the use of headers . . . . . . . . . . . . 18 6.6. Example of Flow from Internet to RPL-aware-leaf . . . . . 18 6.6.1. Summary of the use of headers . . . . . . . . . . . . 18 6.7. Example of Flow from not-RPL-aware-leaf to Internet . . . 18 6.7.1. Summary of the use of headers . . . . . . . . . . . . 19 6.8. Example of Flow from Internet to not-RPL-aware-leaf . . . 19 Robles & Richardson Expires March 17, 2016 [Page 2] Internet-Draft Useof6553 September 2015 6.8.1. Summary of the use of headers . . . . . . . . . . . . 19 6.9. Example of Flow from RPL-aware-leaf to RPL-aware-leaf . . 19 6.9.1. Summary of the use of headers . . . . . . . . . . . . 20 6.10. Example of Flow from RPL-aware-leaf to not-RPL-aware-leaf 20 6.10.1. Summary of the use of headers . . . . . . . . . . . 20 6.11. Example of Flow from not-RPL-aware-leaf to RPL-aware-leaf 20 6.11.1. Summary of the use of headers . . . . . . . . . . . 21 6.12. Example of Flow from not-RPL-aware-leaf to not-RPL-aware- leaf . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6.12.1. Summary of the use of headers . . . . . . . . . . . 21 7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 22 8. Security Considerations . . . . . . . . . . . . . . . . . . . 22 9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 22 10. References . . . . . . . . . . . . . . . . . . . . . . . . . 22 10.1. Normative References . . . . . . . . . . . . . . . . . . 22 10.2. Informative References . . . . . . . . . . . . . . . . . 23 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 23 1. Introduction RPL [RFC6550] is a routing protocol for constrained networks. RFC 6553 [RFC6553] defines the "RPL option", carried within the IPv6 Hop- by-Hop header to quickly identify inconsistencies in the routing topology. RFC 6554 [RFC6554] defines the "RPL Source Route Header", an IPv6 Extension Header to deliver datagrams within a RPL routing domain. Several discussions in the ROLL/6lo/6TiSCH Mailing Lists took place focusing in the definition of how to compress RPL Information in constrained environment. ROLL Virtual Interim Meeting (02-2015) concluded that there is a need to define how to use [RFC6553], [RFC6554] and IP-in-IP encapsulation to be able to set the correct environment for compression. This document is going to be focused in data plane messages and how can be transmitted within the above mentioned RFCs. 2. Terminology and Requirements Language The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119]. Terminology defined in [RFC7102] Robles & Richardson Expires March 17, 2016 [Page 3] Internet-Draft Useof6553 September 2015 3. Sample/reference topology A RPL network is composed of a 6LBR (6LoWPAN Border Router), 6LR (6LoWPAN Router) and 6LN (6LoWPAN Node) as leaf logically organized in a DODAG structure (Destination Oriented Directed Acyclic Graph). RPL defines the RPL Control messages (control plane ), a new ICMPv6 message with Type 155. DIS, DIO and DAO messages are all RPL Control messages but with different Code values. RPL supports two modes of Downward traffic: Storing, it is fully stateful or Non-Storing it is fully source routed. A RPL Instance is either fully storing or fully non-storing, i.e. a RPL Instance with a combination of storing and non-storing nodes is not supported with the current specifications. +--------------+ | Upper Layers | | | +--------------+ | RPL | | | +--------------+ | ICMPv6 | | | +--------------+ | IPv6 | | | +--------------+ | 6LoWPAN | | | +--------------+ | PHY-MAC | | | +--------------+ Figure 1: RPL Stack. Robles & Richardson Expires March 17, 2016 [Page 4] Internet-Draft Useof6553 September 2015 +---------+ +---+Internet | | +---------+ | +----+--+ |DODAG | +---------+Root +----------+ | |6LBR | | | +----+--+ | | | | | | | | | | +-----+-+ +--+---+ +--+---+ |6LR | | | | | +-----+ | | | | | | | | | | | +------+ | +-----+-+ +-+----+ +-+----+ | | | | | | | | | | | | | | | | +-+---+ +-+---+ +--+--+ +- --+ +---+-+ |Leaf | | | | | | | | | |6LN | | | | | | | | | +-----+ +-----+ +-----+ +----+ +-----+ Figure 2: A reference RPL Topology. 4. Use cases In data plane context a combination of RFC6553, RFC6554 and IP-in-IP encapsulation is going to be analyzed for the following traffic flows: -Flow from RPL-aware-leaf to root -Flow from root to RPL-aware-leaf -Flow from not-RPL-aware-leaf to root -Flow from root to not-RPL-aware-leaf -Flow from RPL-aware-leaf to Internet -Flow from Internet to RPL-aware-leaf -Flow from not-RPL-aware-leaf to Internet Robles & Richardson Expires March 17, 2016 [Page 5] Internet-Draft Useof6553 September 2015 -Flow from Internet to not-RPL-aware-leaf -Flow from RPL-aware-leaf to RPL-aware-leaf -Flow from RPL-aware-leaf to not-RPL-aware-leaf -Flow from not-RPL-aware-leaf to RPL-aware-leaf -Flow from not-RPL-aware-leaf to not-RPL-aware-leaf The applicability for Storing and Non-Storing (Non-S) modes for the previous cases is showed as follows: Robles & Richardson Expires March 17, 2016 [Page 6] Internet-Draft Useof6553 September 2015 +-----------------+------+------+---------+-------+-------+---------+ | Use Case | RPI | RH3 | IP-in- | Non-S | Non-S | Non-S | | | (RFC | (RFC | IP | RPI | RH3 | IP-in- | | | 6553 | 6554 | | | | IP | | | ) | ) | | | | | +-----------------+------+------+---------+-------+-------+---------+ | RPL-aware-leaf | Yes | ? | Yes | Yes | ? | Yes | | to root | | | | | | | | root to RPL- | ? | ? | Yes | ? | ? | Yes | | aware-leaf | | | | | | | | not-RPL-aware- | Yes | ? | Yes | Yes | ? | Yes | | leaf to root | | | | | | | | root to not- | ? | ? | Yes | ? | ? | Yes | | RPL-aware-leaf | | | | | | | | RPL-aware-leaf | Yes | ? | Yes | Yes | ? | Yes | | to Internet | | | | | | | | Internet to | ? | ? | ? | ? | ? | ? | | RPL-aware-leaf | | | | | | | | not-RPL-aware- | ? | ? | yes | ? | ? | Yes | | leaf to | | | | | | | | Internet | | | | | | | | Internet to | ? | ? | Yes | ? | ? | Yes | | not-RPL-aware- | | | | | | | | leaf | | | | | | | | RPL-aware-leaf | Yes | ? | Yes | Yes | ? | Yes | | to RPL-aware- | | | | | | | | leaf | | | | | | | | RPL-aware-leaf | ? | ? | Yes | ? | ? | Yes | | to not-RPL- | | | | | | | | aware-leaf | | | | | | | | not-RPL-aware- | ? | ? | Yes | ? | ? | Yes | | leaf to RPL- | | | | | | | | aware-leaf | | | | | | | | not-RPL-aware- | ? | ? | Yes | ? | ? | Yes | | leaf to not- | | | | | | | | RPL-aware-leaf | | | | | | | +-----------------+------+------+---------+-------+-------+---------+ Table 1: Posibility to transmit in Storing or Non-Storing mode: RPI, RH3, IP-in-IP encapsulation 5. Storing mode 5.1. Example of Flow from RPL-aware-leaf to root As states in Section 16.2 of [RFC6550] a leaf node does not generally issue DIO messages, a leaf node accepts DIO messages (In inconsistency a leaf node generates DIO with infinite rank, to fix Robles & Richardson Expires March 17, 2016 [Page 7] Internet-Draft Useof6553 September 2015 it). It may issue DAO and DIS messages though it generally ignores DAO and DIS messages. Related to RFC 6554 the Source Header route is added and removed by DODAG root. RFC 6554 was created to strictly send information between RPL routers in the same RPL routing domain. In storing mode is suitable the use of RFC 6553 to send RPL Information through HBH field checking the routing table to find out where to send the message. It may include IP-in-IP encapsulation to transmit information not related with the RPL domain. In this case the flow comprises: RPL-aware-leaf (6LN) --> 6LR --> root (6LBR) TODO: ADD explanation and picture based on the following table. 5.1.1. Summary of the use of headers TODO: What about fragmentations headers? +-------------------+-----+-----+------+ | Header | 6LN | 6LR | 6LBR | +-------------------+-----+-----+------+ | Inserted headers | ? | ? | ? | | Removed headers | ? | ? | ? | | Re-added headers | ? | ? | ? | | Modified headers | ? | ? | ? | | Untouched headers | ? | ? | ? | +-------------------+-----+-----+------+ Storing: Summary of the use of headers from RPL-aware-leaf to root 5.2. Example of Flow from root to RPL-aware-leaf In this case the flow comprises: root (6LBR)--> 6LR --> RPL-aware-leaf (6LN) TODO: ADD explanation and picture based on the following table 5.2.1. Summary of the use of headers TODO: What about fragmentations headers? Robles & Richardson Expires March 17, 2016 [Page 8] Internet-Draft Useof6553 September 2015 +-------------------+------+-----+-----+ | Header | 6LBR | 6LR | 6LN | +-------------------+------+-----+-----+ | Inserted headers | ? | ? | ? | | Removed headers | ? | ? | ? | | Re-added headers | ? | ? | ? | | Modified headers | ? | ? | ? | | Untouched headers | ? | ? | ? | +-------------------+------+-----+-----+ Storing: Summary of the use of headers from root to RPL-aware-leaf 5.3. Example of Flow from root to not-RPL-aware-leaf In this case the flow comprises: root (6LBR)--> 6LR --> not-RPL-aware-leaf (6LN) TODO: ADD explanation and picture based on the following table 5.3.1. Summary of the use of headers TODO: What about fragmentations headers? +-------------------+------+-----+-------------------+ | Header | 6LBR | 6LR | not-RPL-aware 6LN | +-------------------+------+-----+-------------------+ | Inserted headers | ? | ? | ? | | Removed headers | ? | ? | ? | | Re-added headers | ? | ? | ? | | Modified headers | ? | ? | ? | | Untouched headers | ? | ? | ? | +-------------------+------+-----+-------------------+ Storing: Summary of the use of headers from root to not-RPL-aware- leaf 5.4. Example of Flow from not-RPL-aware-leaf to root In this case the flow comprises: not-RPL-aware-leaf (6LN) --> 6LR --> root (6LBR) TODO: ADD explanation and picture based on the following table Robles & Richardson Expires March 17, 2016 [Page 9] Internet-Draft Useof6553 September 2015 5.4.1. Summary of the use of headers TODO: What about fragmentations headers? +-------------------+-------------------+-----+------+ | Header | not-RPL-aware 6LN | 6LR | 6LBR | +-------------------+-------------------+-----+------+ | Inserted headers | ? | ? | ? | | Removed headers | ? | ? | ? | | Re-added headers | ? | ? | ? | | Modified headers | ? | ? | ? | | Untouched headers | ? | ? | ? | +-------------------+-------------------+-----+------+ Storing: Summary of the use of headers from not-RPL-aware-leaf to root 5.5. Example of Flow from RPL-aware-leaf to Internet RPL information from RFC 6553 should not go out to Internet. The router should take this information out before send the packet to Internet. The HBH Option is going to be analyzed in each node to the root. In this case the flow comprises: RPL-aware-leaf (6LN) --> 6LR --> root (6LBR) --> Internet TODO: ADD explanation and picture based on the following table 5.5.1. Summary of the use of headers TODO: What about fragmentations headers? +-------------------+-----+-----+------+----------+ | Header | 6LN | 6LR | 6LBR | Internet | +-------------------+-----+-----+------+----------+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+-----+-----+------+----------+ Storing: Summary of the use of headers from RPL-aware-leaf to Internet Robles & Richardson Expires March 17, 2016 [Page 10] Internet-Draft Useof6553 September 2015 5.6. Example of Flow from Internet to RPL-aware-leaf In this case the flow comprises: Internet --> root (6LBR) --> 6LR --> RPL-aware-leaf (6LN) TODO: ADD explanation and picture based on the following table 5.6.1. Summary of the use of headers TODO: What about fragmentations headers? +-------------------+----------+------+-----+-----+ | Header | Internet | 6LBR | 6LR | 6LN | +-------------------+----------+------+-----+-----+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+----------+------+-----+-----+ Storing: Summary of the use of headers from Internet to RPL-aware- leaf 5.7. Example of Flow from not-RPL-aware-leaf to Internet In this case the flow comprises: not-RPL-aware-leaf (6LN) --> 6LR --> root (6LBR) --> Internet TODO: ADD explanation and picture based on the following table 5.7.1. Summary of the use of headers TODO: What about fragmentations headers? Robles & Richardson Expires March 17, 2016 [Page 11] Internet-Draft Useof6553 September 2015 +-------------------+-------------------+-----+------+----------+ | Header | not-RPL-aware 6LN | 6LR | 6LBR | Internet | +-------------------+-------------------+-----+------+----------+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+-------------------+-----+------+----------+ Storing: Summary of the use of headers from not-RPL-aware-leaf to Internet 5.8. Example of Flow from Internet to not-RPL-aware-leaf In this case the flow comprises: Internet --> root (6LBR) --> 6LR --> not-RPL-aware-leaf (6LN) TODO: ADD explanation and picture based on the following table 5.8.1. Summary of the use of headers +-------------------+----------+------+-----+-------------------+ | Header | Internet | 6LBR | 6LR | not-RPL-aware 6LN | +-------------------+----------+------+-----+-------------------+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+----------+------+-----+-------------------+ Storing: Summary of the use of headers from Internet to not-RPL- aware-leaf 5.9. Example of Flow from RPL-aware-leaf to RPL-aware-leaf In [RFC6550] RPL allows a simple one-hop P2P optimization for both storing and non-storing networks. A node may send a P2P packet destined to a one-hop neighbor directly to that node. Section 9 in [RFC6550]. In this case the flow comprises: 6LN --> 6LR --> root (6LBR) --> 6LR --> 6LN TODO: ADD explanation and picture based on the following table Robles & Richardson Expires March 17, 2016 [Page 12] Internet-Draft Useof6553 September 2015 5.9.1. Summary of the use of headers +-------------------+---------+-----+------+---------+ | Header | 6LN src | 6LR | 6LBR | 6LN dst | +-------------------+---------+-----+------+---------+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+---------+-----+------+---------+ Storing: Summary of the use of headers for RPL-aware-leaf to RPL- aware-leaf 5.10. Example of Flow from RPL-aware-leaf to not-RPL-aware-leaf In this case the flow comprises: 6LN --> 6LR --> root (6LBR) --> 6LR --> not-RPL-aware 6LN TODO: ADD explanation and picture based on the following table 5.10.1. Summary of the use of headers +-------------------+-----+-----+------+--------------------+ | Header | 6LN | 6LR | 6LBR | not-RPL-aware 6LBR | +-------------------+-----+-----+------+--------------------+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+-----+-----+------+--------------------+ Storing: Summary of the use of headers from RPL-aware-leaf to not- RPL-aware-leaf 5.11. Example of Flow from not-RPL-aware-leaf to RPL-aware-leaf In this case the flow comprises: not-RPL-aware 6LN --> 6LR --> root (6LBR) --> 6LR --> 6LN TODO: ADD explanation and picture based on the following table Robles & Richardson Expires March 17, 2016 [Page 13] Internet-Draft Useof6553 September 2015 5.11.1. Summary of the use of headers +-------------------+--------------------+-----+------+-----+ | Header | not-RPL-aware 6LBR | 6LR | 6LBR | 6LN | +-------------------+--------------------+-----+------+-----+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+--------------------+-----+------+-----+ Storing: Summary of the use of headers from not-RPL-aware-leaf to RPL-aware-leaf 5.12. Example of Flow from not-RPL-aware-leaf to not-RPL-aware-leaf In this case the flow comprises: not-RPL-aware 6LN --> 6LR --> root (6LBR) --> 6LR --> not-RPL-aware 6LN TODO: ADD explanation and picture based on the following table 5.12.1. Summary of the use of headers +--------------+-------------------+-----+------+-------------------+ | Header | not-RPL-aware 6LN | 6LR | 6LBR | not-RPL-aware 6LN | | | src | | | dst | +--------------+-------------------+-----+------+-------------------+ | Inserted | ? | ? | ? | ? | | headers | | | | | | Removed | ? | ? | ? | ? | | headers | | | | | | Re-added | ? | ? | ? | ? | | headers | | | | | | Modified | ? | ? | ? | ? | | headers | | | | | | Untouched | ? | ? | ? | ? | | headers | | | | | +--------------+-------------------+-----+------+-------------------+ Storing: Summary of the use of headers from not-RPL-aware-leaf to not-RPL-aware-leaf Robles & Richardson Expires March 17, 2016 [Page 14] Internet-Draft Useof6553 September 2015 6. Non Storing mode 6.1. Example of Flow from RPL-aware-leaf to root In non-storing mode the leaf node uses Hop-By-Hop option (RFC 6553) to indicate the routing information to send messages to the DODAG root, this message is going to be analyzed in each node until arrive the DODAG root. In this case the flow comprises: RPL-aware-leaf (6LN) --> 6LR --> root (6LBR) +------------------+ | Dispatch | | | +------------------+ | LowPAN_HC | | | +------------------+ | rpl_option | | | +------------------+ | SHR | | | +------------------+ | IPv6 payload | | | +------------------+ Figure 3: From leaf to Root - Non-Storing Mode TODO: ADD explanation/fix picture based on the following table 6.1.1. Summary of the use of headers Robles & Richardson Expires March 17, 2016 [Page 15] Internet-Draft Useof6553 September 2015 +-------------------+-----+-----+------+ | Header | 6LN | 6LR | 6LBR | +-------------------+-----+-----+------+ | Inserted headers | ? | ? | ? | | Removed headers | ? | ? | ? | | Re-added headers | ? | ? | ? | | Modified headers | ? | ? | ? | | Untouched headers | ? | ? | ? | +-------------------+-----+-----+------+ Storing: Summary of the use of headers from RPL-aware-leaf to root 6.2. Example of Flow from root to RPL-aware-leaf In this case the flow comprises: root (6LBR)--> 6LR --> RPL-aware-leaf (6LN) TODO: ADD explanation and picture based on the following table 6.2.1. Summary of the use of headers +-------------------+------+-----+-----+ | Header | 6LBR | 6LR | 6LN | +-------------------+------+-----+-----+ | Inserted headers | ? | ? | ? | | Removed headers | ? | ? | ? | | Re-added headers | ? | ? | ? | | Modified headers | ? | ? | ? | | Untouched headers | ? | ? | ? | +-------------------+------+-----+-----+ Storing: Summary of the use of headers from root to RPL-aware-leaf 6.3. Example of Flow from root to not-RPL-aware-leaf In this case the flow comprises: root (6LBR)--> 6LR --> not-RPL-aware-leaf (6LN) TODO: ADD explanation and picture based on the following table 6.3.1. Summary of the use of headers Robles & Richardson Expires March 17, 2016 [Page 16] Internet-Draft Useof6553 September 2015 +-------------------+------+-----+-------------------+ | Header | 6LBR | 6LR | not-RPL-aware 6LN | +-------------------+------+-----+-------------------+ | Inserted headers | ? | ? | ? | | Removed headers | ? | ? | ? | | Re-added headers | ? | ? | ? | | Modified headers | ? | ? | ? | | Untouched headers | ? | ? | ? | +-------------------+------+-----+-------------------+ Storing: Summary of the use of headers from root to not-RPL-aware- leaf 6.4. Example of Flow from not-RPL-aware-leaf to root In this case the flow comprises: not-RPL-aware-leaf (6LN) --> 6LR --> root (6LBR) TODO: ADD explanation and picture based on the following table 6.4.1. Summary of the use of headers +-------------------+-------------------+-----+------+ | Header | not-RPL-aware 6LN | 6LR | 6LBR | +-------------------+-------------------+-----+------+ | Inserted headers | ? | ? | ? | | Removed headers | ? | ? | ? | | Re-added headers | ? | ? | ? | | Modified headers | ? | ? | ? | | Untouched headers | ? | ? | ? | +-------------------+-------------------+-----+------+ Storing: Summary of the use of headers from not-RPL-aware-leaf to root 6.5. Example of Flow from RPL-aware-leaf to Internet In this case the flow comprises: RPL-aware-leaf (6LN) --> 6LR --> root (6LBR) --> Internet TODO: ADD explanation and picture based on the following table Robles & Richardson Expires March 17, 2016 [Page 17] Internet-Draft Useof6553 September 2015 6.5.1. Summary of the use of headers +-------------------+-----+-----+------+----------+ | Header | 6LN | 6LR | 6LBR | Internet | +-------------------+-----+-----+------+----------+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+-----+-----+------+----------+ Storing: Summary of the use of headers from RPL-aware-leaf to Internet 6.6. Example of Flow from Internet to RPL-aware-leaf In this case the flow comprises: Internet --> root (6LBR) --> 6LR --> RPL-aware-leaf (6LN) TODO: ADD explanation and picture based on the following table 6.6.1. Summary of the use of headers +-------------------+----------+------+-----+-----+ | Header | Internet | 6LBR | 6LR | 6LN | +-------------------+----------+------+-----+-----+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+----------+------+-----+-----+ Storing: Summary of the use of headers from Internet to RPL-aware- leaf 6.7. Example of Flow from not-RPL-aware-leaf to Internet In this case the flow comprises: not-RPL-aware-leaf (6LN) --> 6LR --> root (6LBR) --> Internet TODO: ADD explanation and picture based on the following table Robles & Richardson Expires March 17, 2016 [Page 18] Internet-Draft Useof6553 September 2015 6.7.1. Summary of the use of headers +-------------------+-------------------+-----+------+----------+ | Header | not-RPL-aware 6LN | 6LR | 6LBR | Internet | +-------------------+-------------------+-----+------+----------+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+-------------------+-----+------+----------+ Storing: Summary of the use of headers from not-RPL-aware-leaf to Internet 6.8. Example of Flow from Internet to not-RPL-aware-leaf In this case the flow comprises: Internet --> root (6LBR) --> 6LR --> not-RPL-aware-leaf (6LN) TODO: ADD explanation and picture based on the following table 6.8.1. Summary of the use of headers +-------------------+----------+------+-----+-------------------+ | Header | Internet | 6LBR | 6LR | not-RPL-aware 6LN | +-------------------+----------+------+-----+-------------------+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+----------+------+-----+-------------------+ Storing: Summary of the use of headers from Internet to not-RPL- aware-leaf 6.9. Example of Flow from RPL-aware-leaf to RPL-aware-leaf In this case the flow comprises: 6LN --> 6LR --> root (6LBR) --> 6LR --> 6LN TODO: ADD explanation and picture based on the following table Robles & Richardson Expires March 17, 2016 [Page 19] Internet-Draft Useof6553 September 2015 6.9.1. Summary of the use of headers +-------------------+---------+-----+------+---------+ | Header | 6LN src | 6LR | 6LBR | 6LN dst | +-------------------+---------+-----+------+---------+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+---------+-----+------+---------+ Storing: Summary of the use of headers for RPL-aware-leaf to RPL- aware-leaf 6.10. Example of Flow from RPL-aware-leaf to not-RPL-aware-leaf In this case the flow comprises: 6LN --> 6LR --> root (6LBR) --> 6LR --> not-RPL-aware 6LN TODO: ADD explanation and picture based on the following table 6.10.1. Summary of the use of headers +-------------------+-----+-----+------+--------------------+ | Header | 6LN | 6LR | 6LBR | not-RPL-aware 6LBR | +-------------------+-----+-----+------+--------------------+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+-----+-----+------+--------------------+ Storing: Summary of the use of headers from RPL-aware-leaf to not- RPL-aware-leaf 6.11. Example of Flow from not-RPL-aware-leaf to RPL-aware-leaf In this case the flow comprises: not-RPL-aware 6LN --> 6LR --> root (6LBR) --> 6LR --> 6LN TODO: ADD explanation and picture based on the following table Robles & Richardson Expires March 17, 2016 [Page 20] Internet-Draft Useof6553 September 2015 6.11.1. Summary of the use of headers +-------------------+--------------------+-----+------+-----+ | Header | not-RPL-aware 6LBR | 6LR | 6LBR | 6LN | +-------------------+--------------------+-----+------+-----+ | Inserted headers | ? | ? | ? | ? | | Removed headers | ? | ? | ? | ? | | Re-added headers | ? | ? | ? | ? | | Modified headers | ? | ? | ? | ? | | Untouched headers | ? | ? | ? | ? | +-------------------+--------------------+-----+------+-----+ Storing: Summary of the use of headers from not-RPL-aware-leaf to RPL-aware-leaf 6.12. Example of Flow from not-RPL-aware-leaf to not-RPL-aware-leaf In this case the flow comprises: not-RPL-aware 6LN --> 6LR --> root (6LBR) --> 6LR --> not-RPL-aware 6LN TODO: ADD explanation and picture based on the following table 6.12.1. Summary of the use of headers +--------------+-------------------+-----+------+-------------------+ | Header | not-RPL-aware 6LN | 6LR | 6LBR | not-RPL-aware 6LN | | | src | | | dst | +--------------+-------------------+-----+------+-------------------+ | Inserted | ? | ? | ? | ? | | headers | | | | | | Removed | ? | ? | ? | ? | | headers | | | | | | Re-added | ? | ? | ? | ? | | headers | | | | | | Modified | ? | ? | ? | ? | | headers | | | | | | Untouched | ? | ? | ? | ? | | headers | | | | | +--------------+-------------------+-----+------+-------------------+ Storing: Summary of the use of headers from not-RPL-aware-leaf to not-RPL-aware-leaf Robles & Richardson Expires March 17, 2016 [Page 21] Internet-Draft Useof6553 September 2015 7. IANA Considerations There are no IANA considerations related to this document. 8. Security Considerations TODO. 9. Acknowledgments This work is partially funded by the FP7 Marie Curie Initial Training Network (ITN) METRICS project (grant agreement No. 607728). The authors would like to acknowledge the review, feedback, and comments of Thomas Watteyne, Xavier Vilajosana, Robert Cragie and Pascal Thubert To be completed with additional Acknowledgments. 10. References 10.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . [RFC6550] Winter, T., Ed., Thubert, P., Ed., Brandt, A., Hui, J., Kelsey, R., Levis, P., Pister, K., Struik, R., Vasseur, JP., and R. Alexander, "RPL: IPv6 Routing Protocol for Low-Power and Lossy Networks", RFC 6550, DOI 10.17487/RFC6550, March 2012, . [RFC6553] Hui, J. and JP. Vasseur, "The Routing Protocol for Low- Power and Lossy Networks (RPL) Option for Carrying RPL Information in Data-Plane Datagrams", RFC 6553, DOI 10.17487/RFC6553, March 2012, . [RFC6554] Hui, J., Vasseur, JP., Culler, D., and V. Manral, "An IPv6 Routing Header for Source Routes with the Routing Protocol for Low-Power and Lossy Networks (RPL)", RFC 6554, DOI 10.17487/RFC6554, March 2012, . Robles & Richardson Expires March 17, 2016 [Page 22] Internet-Draft Useof6553 September 2015 10.2. Informative References [RFC7102] Vasseur, JP., "Terms Used in Routing for Low-Power and Lossy Networks", RFC 7102, DOI 10.17487/RFC7102, January 2014, . Authors' Addresses Maria Ines Robles Ericsson Hirsalantie 11 Jorvas 02420 Finland Email: maria.ines.robles@ericsson.com Michaelbl C. Richardson Sandelman Software Works 470 Dawson Avenue Ottawa, ON K1Z 5V7 CA Email: mcr+ietf@sandelman.ca URI: http://www.sandelman.ca/ Robles & Richardson Expires March 17, 2016 [Page 23]