Fast re-route method and device in MPLS (Multi-Protocol Label Switching)

The invention provides a fast re-route method and a device in MPLS (Multi-Protocol Label Switching). According to the method and the device provided by the invention, a great amount of main LSPs (Label Switch Paths) with same output interface information multiplex the same VN table item and the same...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GU JINFENG, JI FULIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	The invention provides a fast re-route method and a device in MPLS (Multi-Protocol Label Switching). According to the method and the device provided by the invention, a great amount of main LSPs (Label Switch Paths) with same output interface information multiplex the same VN table item and the same BFD (Bidirectional Forwarding Detection) conversation; the same output interface link of the main LSPs can be detected by the BFD conversation; and the shared VN table item can be updated when the fault of the link is detected, so as to realize the conversion of the main LSPs. The fast re-route property of 50 mS can be entirely satisfied, namely the fast re-route of the LSPs with the same output interface can be realized.