draft-ietf-manet-dlep-pause-extension-07.txt   draft-ietf-manet-dlep-pause-extension-08.txt 
Network Working Group B. Cheng Network Working Group B. Cheng
Internet-Draft D. Wiggins Internet-Draft D. Wiggins
Intended status: Standards Track MIT Lincoln Laboratory Intended status: Standards Track MIT Lincoln Laboratory
Expires: November 7, 2019 L. Berger, Ed. Expires: December 15, 2019 L. Berger, Ed.
LabN Consulting, L.L.C. LabN Consulting, L.L.C.
May 6, 2019 June 13, 2019
DLEP Control Plane Based Pause Extension DLEP Control Plane Based Pause Extension
draft-ietf-manet-dlep-pause-extension-07 draft-ietf-manet-dlep-pause-extension-08
Abstract Abstract
This document defines an extension to the Dynamic Link Exchange This document defines an extension to the Dynamic Link Exchange
Protocol (DLEP) that enables a modem to use DLEP messages to pause Protocol (DLEP) that enables a modem to use DLEP messages to pause
and resume data traffic coming from its peer router. and resume data traffic coming from its peer router.
Status of This Memo Status of This Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
skipping to change at page 1, line 34 skipping to change at page 1, line 34
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 https://datatracker.ietf.org/drafts/current/. Drafts is at https://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 November 7, 2019. This Internet-Draft will expire on December 15, 2019.
Copyright Notice Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the Copyright (c) 2019 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
(https://trustee.ietf.org/license-info) in effect on the date of (https://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
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Num DSCPs Qn: Num DSCPs Qn:
An 8-bit unsigned integer indicating the number of DSCPs An 8-bit unsigned integer indicating the number of DSCPs
associated with the queue index associated with the sub data item. associated with the queue index associated with the sub data item.
This field MUST contain a value of at least one (1). This field MUST contain a value of at least one (1).
DS Field Qn: DS Field Qn:
The data item contains a sequence of 8 bit DS Fields. The number The data item contains a sequence of 8 bit DS Fields. The number
of DS Fields present MUST equal the sum of all Num DSCPs field of DS Fields present MUST equal the value of the Num DSCPs field.
values.
The DS Field structure is the same as [RFC2474]. The DS Field structure is the same as [RFC2474].
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
+---+---+---+---+---+---+---+---+ +---+---+---+---+---+---+---+---+
| DSCP | CU | | DSCP | CU |
+---+---+---+---+---+---+---+---+ +---+---+---+---+---+---+---+---+
DSCP: differentiated services codepoint DSCP: differentiated services codepoint
CU: currently unused, MUST be zero CU: currently unused, MUST be zero
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Data Item Type: TBA4 Data Item Type: TBA4
Length: See Section 3.2. Length: See Section 3.2.
Queue Index: See Section 3.2. Queue Index: See Section 3.2.
4. Security Considerations 4. Security Considerations
The extension introduces a new mechanism for flow control between a The extension introduces a new mechanism for flow control between a
router and modem using DLEP. The extension does not inherently router and modem using DLEP. The extension does not introduce any
introduce any additional vulnerabilities above those documented in vulnerabilities that are inherently different from those documented
[RFC8175]. The approach taken to Security in that document applies in [RFC8175]. The approach taken to Security in that document
equally when running the extension defined in this document. applies equally when running the extension defined in this document.
Implementations of the extension defined in this document MUST Implementations of the extension defined in this document MUST
support configuration of TLS usage, as describe in [RFC8175], in support configuration of TLS usage, as describe in [RFC8175], in
order to protect configurations where injection attacks are possible, order to protect configurations where injection attacks are possible,
i.e., when the link between a modem and router is not otherwise i.e., when the link between a modem and router is not otherwise
protected. protected.
Note that this extension does allow a compromised or impersonating Note that this extension does allow a compromised or impersonating
modem to suppress transmission by the router or a switch that modem to suppress transmission by the router or a switch that
interconnects the modem and router. Similar attacks are generally interconnects the modem and router. Similar attacks are generally
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