Transparent re-routing of mpls traffic engineering lsps...

Details Transparent re-routing of mpls traffic engineering lsps... Transparent re-routing of mpls traffic engineering lsps...

H - Electricity

04

L

H04L 29/04 (2006.01) H04L 12/54 (2006.01)

Patent

CA 2542045

Local rerouting around a failed component link of a link bundle is provided by immediately substituting one or more other component links of the same link bundle. The substitution of component links is performed at the point of failure without signaling to other nodes. This minimizes signaling traffic particularly when large numbers of LSPs are impacted by a single component link failure. Also, since LSP repair can be accomplished very quickly, traffic disruption is minimized.

Pour assurer le ré-acheminement local autour d'une liaison de composant défaillante, on substitue immédiatement à cette liaison une ou plusieurs autres liaisons constitutives du même bouquet de liaisons. La substitution de la liaison constitutive se fait au point de défaillance, sans signalisation aux autres noeuds. Ce procédé permet de réduire le trafic de signalisation, en particulier lorsque de grands nombre de voies commutées d'étiquettes (LSP) subissent l'influence d'une seule défaillance de liaison. De plus, comme la réparation des voies LSP se fait très rapidement, les perturbations du trafic sont réduites au mininum.

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