Border Gateway Protocol (BGP) Persistent Route Oscillation Condition

McPherson, Danny; Gill, Vijay; Walton, Daniel; Retana, Alvaro

doi:10.17487/rfc3345

Cited by 67 publications

(72 citation statements)

References 5 publications

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“…Note however, that there are permanent BGP route oscillation scenarios [RFC3345] that the mechanism described in this document does not eliminate. , and (c) are as described in Figure 2.…”

Section: The Benefitsmentioning

confidence: 95%

Avoid BGP Best Path Transitions from One External to Another

Chen¹,

Sangli²

2007

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This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. AbstractIn this document, we propose an extension to the BGP route selection rules that would avoid unnecessary best path transitions between external paths under certain conditions. The proposed extension would help the overall network stability, and more importantly, would eliminate certain BGP route oscillations in which more than one external path from one BGP speaker contributes to the churn.

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“…Note however, that there are permanent BGP route oscillation scenarios [RFC3345] that the mechanism described in this document does not eliminate. , and (c) are as described in Figure 2.…”

Section: The Benefitsmentioning

confidence: 95%

Avoid BGP Best Path Transitions from One External to Another

Chen¹,

Sangli²

2007

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“…The first is the problem of BGP oscillations [RFC3345]. The second is the desire for faster reachability restoration in the event of failure of the network link or network element.…”

Section: Historymentioning

confidence: 99%

Distribution of Diverse BGP Paths

Fernando¹,

Patel²,

McPherson³

et al. 2012

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“…Additionally, confederations (as well as route reflectors), by excluding different reachability information from consideration at different locations in a confederation, have been shown [RFC3345] to cause permanent oscillation between candidate routes when using the tie-breaking rules required by BGP [BGP-4]. Care must be taken when selecting MED values and tie-breaking policy to avoid these situations.…”

Section: Deployment Considerationsmentioning

confidence: 99%