< draft-white-distoptflood-03.txt   draft-white-distoptflood-04.txt >
Network Working Group R. White Network Working Group R. White
Internet-Draft S. Hegde Internet-Draft S. Hegde
Intended status: Informational Juniper Networks Intended status: Informational Juniper Networks
Expires: October 5, 2020 S. Zandi Expires: January 28, 2021 S. Zandi
LinkedIn LinkedIn
April 3, 2020 July 27, 2020
IS-IS Optimal Distributed Flooding for Dense Topologies IS-IS Optimal Distributed Flooding for Dense Topologies
draft-white-distoptflood-03 draft-white-distoptflood-04
Abstract Abstract
In dense topologies, such as data center fabrics based on the Clos In dense topologies, such as data center fabrics based on the Clos
and butterfly fabric topologies, flooding mechanisms designed for and butterfly fabric topologies, flooding mechanisms designed for
sparse topologies, when used in these dense topologies, can sparse topologies, when used in these dense topologies, can
"overflood," or carry too many copies of topology and reachability to "overflood," or carry too many copies of topology and reachability to
fabric devices. This results in slower convergence times and higher fabric devices. This results in slower convergence times and higher
resource utilization. The modifications to the flooding mechanism in resource utilization. The modifications to the flooding mechanism in
the Intermediate System to Intermediate System (IS-IS) link state the Intermediate System to Intermediate System (IS-IS) link state
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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 October 5, 2020. This Internet-Draft will expire on January 28, 2021.
Copyright Notice Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the Copyright (c) 2020 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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implement IS-IS cryptographic authentication, as described in implement IS-IS cryptographic authentication, as described in
[RFC5304], and should enable other security measures in accordance [RFC5304], and should enable other security measures in accordance
with best common practices for the IS-IS protocol. with best common practices for the IS-IS protocol.
5. References 5. References
5.1. Normative References 5.1. Normative References
[I-D.ietf-lsr-dynamic-flooding] [I-D.ietf-lsr-dynamic-flooding]
Li, T., Psenak, P., Ginsberg, L., Chen, H., Przygienda, Li, T., Psenak, P., Ginsberg, L., Chen, H., Przygienda,
T., Cooper, D., Jalil, L., and S. Dontula, "Dynamic T., Cooper, D., Jalil, L., Dontula, S., and G. Mishra,
Flooding on Dense Graphs", draft-ietf-lsr-dynamic- "Dynamic Flooding on Dense Graphs", draft-ietf-lsr-
flooding-04 (work in progress), November 2019. dynamic-flooding-07 (work in progress), June 2020.
[ISO10589] [ISO10589]
International Organization for Standardization, International Organization for Standardization,
"Intermediate system to Intermediate system intra-domain "Intermediate system to Intermediate system intra-domain
routeing information exchange protocol for use in routeing information exchange protocol for use in
conjunction with the protocol for providing the conjunction with the protocol for providing the
connectionless-mode Network Service (ISO 8473)", ISO/ connectionless-mode Network Service (ISO 8473)", ISO/
IEC 10589:2002, Second Edition, Nov 2002. IEC 10589:2002, Second Edition, Nov 2002.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
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