Link State protocols SPF trigger and delay algorithm impact on IGP microloops

Document Type Replaced Internet-Draft (individual)
Last updated 2015-03-06
Replaced by RFC 8541
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IESG IESG state Replaced by draft-ietf-rtgwg-spf-uloop-pb-statement
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


A micro-loop is a packet forwarding loop that may occur transiently among two or more routers in a hop-by-hop packet forwarding paradigm. In this document, we are trying to analyze the impact of using different Link State IGP implementations in a single network in regards of microloops. The analysis is focused on the SPF triggers and SPF delay algorithm.


Stephane Litkowski (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)