Numbering Exchange Protocol (NEP) Specification
draft-omar-nep-07
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Active Internet-Draft (individual)
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Khaled Omar
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Luís Câmara
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2018-02-02
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Consensus Boilerplate |
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Internet Engineering Task Force (IETF) Khaled Omar
Internet-Draft The Road
Intended status: Experimental L. Camara
Expires: August 6, 2018 February 2, 2018
Numbering Exchange Protocol (NEP)
Specification
draft-omar-nep-07
Abstract
This document specifies the Numbering Exchange Protocol (NEP), an
Interior Gateway Protocol (IGP) that combines three metrics: delay,
bandwidth and number of hops.
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
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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
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 August 6, 2018.
Copyright Notice
Copyright (c) 2018 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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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.
Omar & Camara Expires August 6, 2018 [Page 1]
Internet-Draft Numbering Exchange Protocol (NEP) February 2018
Table of Contents
1. Introduction ...................................................2
2. Numbering Exchange Protocol (NEP) ..............................3
2.1. RIDs and their Advertising ...................................5
2.1.1. Advertising Beyond a Router's Neighbours ...................6
2.2. Echo Mechanism ...............................................6
2.2.1. Detecting Routers that Leaved a NEP Network ................6
2.3. Topology Advertisement .......................................7
2.3.1. The NEP Metric .............................................8
3. NEP Loop Prevention ............................................8
4. Subnet Advertisement ...........................................9
4.1. Specification ...............................................11
4.2. Routing Packets within a NEP AS .............................12
5. IANA Considerations ...........................................12
6. Security Considerations .......................................13
7. References ....................................................13
7.1. Normative References ........................................13
7.2. Informative References ......................................13
8. Authors' Addresses ............................................14
Appendix A. NEP Advertisement Format .............................14
A.1. NEP Header ..................................................14
A.2. Topology Advertisement ......................................15
A.3. Subnet Advertisements .......................................15
A.3.1. Mask-Based Subnet Advertisements ..........................16
A.3.2. Prefix-Based Subnet Advertisements ........................16
A.4. Echo Mechanism ..............................................17
A.4.1. Echo Messages .............................................17
A.4.2. Delay Calculated Message ..................................17
A.5. Hello Messages ..............................................17
A.6. Router Left Message .........................................18
1. Introduction
The Numbering Exchange Protocol (NEP) is an Interior Gateway
Protocol (IGP), delivering IP packets between routers in the same
Autonomous System (AS).
Many routing protocols, such as RIP, OSPF, IS-IS, and EIGRP, use
normally one or even zero metrics each:
a. RIP uses only the number of hops.
b. OSPF uses only the cost (bandwidth).
c. IS-IS uses only a default metric of 10 for all links.
d. EIGRP uses the least bandwidth and delay.
NEP differs from other IGPs as it chooses its best path based on a
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