draft-ietf-idr-eag-distribution-07.txt   draft-ietf-idr-eag-distribution-08.txt 
IDR Working Group Z. Wang IDR Working Group Z. Wang
Internet-Draft Q. Wu Internet-Draft Q. Wu
Intended status: Standards Track Huawei Intended status: Standards Track Huawei
Expires: March 14, 2019 J. Tantsura Expires: April 26, 2019 J. Tantsura
Nuage Networks Apstra, Inc.
September 10, 2018 October 23, 2018
Distribution of MPLS-TE Extended admin Group Using BGP Distribution of MPLS-TE Extended admin Group Using BGP
draft-ietf-idr-eag-distribution-07 draft-ietf-idr-eag-distribution-08
Abstract Abstract
As MPLS-TE network grows, administrative Groups advertised as a As MPLS-TE network grows, administrative Groups advertised as a
fixed-length 32-bit Bitmask is quite constraining. "Extended fixed-length 32-bit Bitmask is quite constraining. "Extended
Administrative Group" IGP TE extensions sub-TLV is introduced to Administrative Group" IGP TE extensions sub-TLV is introduced to
provide for additional administrative groups (link colors) beyond the provide for additional administrative groups (link colors) beyond the
current limit of 32. This document describes extensions to BGP current limit of 32. This document describes extensions to BGP
protocol, that can be used to distribute extended administrative protocol, that can be used to distribute extended administrative
groups in MPLS-TE. groups in MPLS-TE.
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
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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 14, 2019. This Internet-Draft will expire on April 26, 2019.
Copyright Notice Copyright Notice
Copyright (c) 2018 IETF Trust and the persons identified as the Copyright (c) 2018 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
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the Trust Legal Provisions and are provided without warranty as the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License. described in the Simplified BSD License.
Table of Contents Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 2 2. Requirements Language . . . . . . . . . . . . . . . . . . . . 2
3. Carrying Extended Administrative Groups in BGP . . . . . . . 3 3. Carrying Extended Administrative Groups in BGP . . . . . . . 2
3.1. AG and EAG coexistence . . . . . . . . . . . . . . . . . 3 3.1. AG and EAG coexistence . . . . . . . . . . . . . . . . . 3
3.2. Desire for unadvertised EAG bits . . . . . . . . . . . . 4 3.2. Desire for unadvertised EAG bits . . . . . . . . . . . . 3
4. Security Considerations . . . . . . . . . . . . . . . . . . . 4 4. Security Considerations . . . . . . . . . . . . . . . . . . . 4
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4
6. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 4 6. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 4
7. Normative References . . . . . . . . . . . . . . . . . . . . 4 7. Normative References . . . . . . . . . . . . . . . . . . . . 4
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 5 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 4
1. Introduction 1. Introduction
MPLS-TE advertises 32 administrative groups (commonly referred to as MPLS-TE advertises 32 administrative groups (commonly referred to as
"colors" or "link colors") using the Administrative Group sub-TLV of "colors" or "link colors") using the Administrative Group sub-TLV of
the Link TLV defined in OSPFv2 (RFC3630), OSPFv3 (RFC5329) and ISIS the Link TLV defined in OSPFv2 (RFC3630), OSPFv3 (RFC5329) and ISIS
(RFC5305). (RFC5305).
As MPLS-TE network grows, administrative Groups advertised as a As MPLS-TE network grows, administrative Groups advertised as a
fixed-length 32-bit Bitmask is quite constraining. "Extended fixed-length 32-bit Bitmask is quite constraining. "Extended
Administrative Group" IGP TE extensions sub-TLV defined in [RFC7308] Administrative Group" IGP TE extensions sub-TLV defined in [RFC7308]
is introduced to provide for additional administrative groups (link is introduced to provide for additional administrative groups (link
colors) beyond the current limit of 32. colors) beyond the current limit of 32.
This document proposes new BGP Link attribute TLVs that can be TThis document defines a new TLV to be carried within BGP-LS
announced as attribute in the BGP-LS attribute (defined in [I.D-ietf- attribute (defined in [I.D-ietf- idr-ls-distribution]) to distribute
idr-ls-distribution]) to distribute extended administrative groups in extended administrative groups in MPLS-TE.
MPLS-TE.
2. Requirements Language 2. Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in BCP "OPTIONAL" in this document are to be interpreted as described in BCP
14 [RFC2119] [RFC8174] when, and only when, they appear in all 14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here. capitals, as shown here.
3. Carrying Extended Administrative Groups in BGP 3. Carrying Extended Administrative Groups in BGP
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Qin Wu Qin Wu
Huawei Huawei
101 Software Avenue, Yuhua District 101 Software Avenue, Yuhua District
Nanjing, Jiangsu 210012 Nanjing, Jiangsu 210012
China China
Email: bill.wu@huawei.com Email: bill.wu@huawei.com
Jeff Tantsura Jeff Tantsura
Nuage Networks Apstra, Inc.
Email: jefftant.ietf@gmail.com Email: jefftant.ietf@gmail.com
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