Multi-protocol label switch forwarding method, device and label switching path management module

A technology of label switching paths and multi-protocol labels, which is applied in data switching networks, digital transmission systems, electrical components, etc., and can solve the problems of reducing MPLS network forwarding stability and MPLS traffic forwarding interruption, and achieves the goal of reducing MPLS forwarding traffic interruption. probability, simple and convenient implementation, and the effect of improving forwarding stability
CN101159690AActive Publication Date: 2008-04-09NEW H3C TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
NEW H3C TECH CO LTD
Publication Date
2008-04-09

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Abstract

The invention discloses a multi protocol label switching (MPLS) retransmission method and a device, as well as a label switching path management (LSPM) module. The method comprises if it is detected that there are one main link and at least one backup link between a node to a next node, interface inlets and / or interface outlets corresponding to each link are respectively allocated to a static label switching path (LSP), and an interface inlet and / or interface outlet corresponding to the main link is used as a retransmission interface; if a main link failure is detected, an available backup link is selected, and an interface inlet and / or interface outlet corresponding to the selected backup link is used as a retransmission interface in the static LSP; and a MPLS message is retransmitted according to the interface inlet and / or interface outlet used as the retransmission interface in the LSP. The invention improves the retransmission stability of MPLS network adopting static LSP.
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Description

technical field

[0001] The invention relates to the technical field of data forwarding, in particular to a multi-protocol label switching forwarding method and device and a label switching path management module. Background technique

[0002] Internet Protocol (IP, Internet Protocol) / Multiprotocol Label Switching (MPLS, MultiProtocol Label Switching) technology has become an important deployment means of the current core network, and the core of MPLS is label distribution. In order to implement label distribution, a Label Switched Path (LSP, LabelSwitched Path) needs to be established. LSP is divided into two types: static LSP and dynamic LSP. Among them, dynamic LSP is a label distribution protocol between upstream nodes and downstream nodes, such as: Label Distribution Protocol (LDP, LabelDistribution Protocol), LDP based on constraint routing (CR-LDP, Constraint-BasedRouting using LDP), Border Gateway Protocol (BGP, Border Gateway Protocol), Resource Reservation Protocol...

Claims

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