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Resiliência em generalized multiprotocol label switching (GMPLS)

Authors: Soares, Miguel; Brizído, André; Sequeira, Cláudia; Gomes, Teresa; Jorge, Luísa; Melo, Paulo; Craveirinha, José;

Resiliência em generalized multiprotocol label switching (GMPLS)

Abstract

Dada a criticidade da disponibilidade das redes de transporte, em redes MPLS-TP é comum aprovisionar LSP (Label Switched Path – caminhos ao longo da rede) dedicados exclusivamente a funções de proteção, dando origem a esquemas de proteção 1:1, 1+1 ou 1:N (1). Nestes tipos de proteção pretende-se que o LSP de proteção seja o mais disjunto possível do LSP ativo pois a falha de um elemento comum poderia pôr em causa os dois LSP. Se no cálculo destes caminhos for tida em conta informação de SRLG (Shared Risk Link Group) é possível identi car troços que apesar de serem distintos têm uma grande probabilidade de falhar em simultâneo (ex: troços de bra que atravessam a mesma conduta). Neste artigo serão apresentados os resultados da implementação de heurísticas para a determinação de pares de caminhos ativo/proteção, disjuntos nos nós de rede e nos SRLG. Tiveram de ser tidos em conta requisitos de baixo consumo de memória e CPU pois as unidades de processamento dos equipamentos de rede onde irão correr as heurísticas têm recursos muito limitados. Serão também apresentados os resultados de melhoramentos introduzidos a duas heurísticas conhecidas.

Country
Portugal
Related Organizations
Keywords

GMPLS, Algoritmos, Heurísticas

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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