DNS Reverse IP AMT Discovery
draft-ietf-mboned-driad-amt-discovery-09
| The information below is for an old version of the document | |||
|---|---|---|---|
| Document | Type | Active Internet-Draft (mboned WG) | |
| Author | Jake Holland | ||
| Last updated | 2019-12-04 (latest revision 2019-10-27) | ||
| Replaces | draft-jholland-mboned-driad-amt-discovery | ||
| Stream | IETF | ||
| Intended RFC status | Proposed Standard | ||
| Formats | pdf htmlized (tools) htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Tim Chown | ||
| Shepherd write-up | Show (last changed 2019-09-24) | ||
| IESG | IESG state | IESG Evaluation | |
| Consensus Boilerplate | Yes | ||
| Telechat date |
Needs one more YES or NO OBJECTION position to pass. |
||
| Responsible AD | Warren Kumari | ||
| Send notices to | Tim Chown <tim.chown@jisc.ac.uk> | ||
| IANA | IANA review state | IANA OK - Actions Needed | |
Mboned J. Holland
Internet-Draft Akamai Technologies, Inc.
Updates: 7450 (if approved) October 27, 2019
Intended status: Standards Track
Expires: April 29, 2020
DNS Reverse IP AMT Discovery
draft-ietf-mboned-driad-amt-discovery-09
Abstract
This document updates RFC 7450 (Automatic Multicast Tunneling, or
AMT) by extending the relay discovery process to use a new DNS
resource record named AMTRELAY when discovering AMT relays for
source-specific multicast channels. The reverse IP DNS zone for a
multicast sender's IP address is configured to use AMTRELAY resource
records to advertise a set of AMT relays that can receive and forward
multicast traffic from that sender over an AMT tunnel.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on April 29, 2020.
Copyright Notice
Copyright (c) 2019 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
(https://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
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Holland Expires April 29, 2020 [Page 1]
Internet-Draft DRIAD October 2019
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.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Background . . . . . . . . . . . . . . . . . . . . . . . 4
1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 4
1.2.1. Relays and Gateways . . . . . . . . . . . . . . . . . 4
1.2.2. Definitions . . . . . . . . . . . . . . . . . . . . . 4
2. Relay Discovery Operation . . . . . . . . . . . . . . . . . . 5
2.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2. Signaling and Discovery . . . . . . . . . . . . . . . . . 6
2.3. Optimal Relay Selection . . . . . . . . . . . . . . . . . 8
2.3.1. Overview . . . . . . . . . . . . . . . . . . . . . . 8
2.3.2. Preference Ordering . . . . . . . . . . . . . . . . . 10
2.3.3. Connecting to Multiple Relays . . . . . . . . . . . . 12
2.4. Happy Eyeballs . . . . . . . . . . . . . . . . . . . . . 12
2.4.1. Overview . . . . . . . . . . . . . . . . . . . . . . 12
2.4.2. Algorithm Guidelines . . . . . . . . . . . . . . . . 13
2.4.3. Connection Definition . . . . . . . . . . . . . . . . 14
2.5. Guidelines for Restarting Discovery . . . . . . . . . . . 14
2.5.1. Overview . . . . . . . . . . . . . . . . . . . . . . 14
2.5.2. Updates to Restarting Events . . . . . . . . . . . . 15
2.5.3. Tunnel Stability . . . . . . . . . . . . . . . . . . 16
2.5.4. Traffic Health . . . . . . . . . . . . . . . . . . . 16
2.5.5. Relay Loaded or Shutting Down . . . . . . . . . . . . 18
2.5.6. Relay Discovery Messages vs. Restarting Discovery . . 18
2.5.7. Independent Discovery Per Traffic Source . . . . . . 19
2.6. DNS Configuration . . . . . . . . . . . . . . . . . . . . 19
2.7. Waiting for DNS resolution . . . . . . . . . . . . . . . 20
3. Example Deployments . . . . . . . . . . . . . . . . . . . . . 20
3.1. Example Receiving Networks . . . . . . . . . . . . . . . 20
3.1.1. Tier 3 ISP . . . . . . . . . . . . . . . . . . . . . 20
3.1.2. Small Office . . . . . . . . . . . . . . . . . . . . 21
3.2. Example Sending Networks . . . . . . . . . . . . . . . . 23
3.2.1. Sender-controlled Relays . . . . . . . . . . . . . . 23
3.2.2. Provider-controlled Relays . . . . . . . . . . . . . 24
4. AMTRELAY Resource Record Definition . . . . . . . . . . . . . 25
4.1. AMTRELAY RRType . . . . . . . . . . . . . . . . . . . . . 25
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