A kind of fast rerouting method and device, transmission network

A kind of fast rerouting method and device, transmission network

  • CN 104,158,733 B
  • Filed: 05/13/2013
  • Issued: 04/05/2019
  • Est. Priority Date: 05/13/2013
  • Status: Active Grant
First Claim
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1. a kind of fast rerouting method, be applied to controller, the controller respectively with it is every on primary path end to endOne primary forward node, and the spare forward node communication connection of each on backup path, feature exist end to endIn, comprising:

  • The controller is for each described primary forward node on primary path end to end, from described standby end to endInquiry on path is used to meet the spare forward node of condition as the backup forward node of the primary forward node;

    Wherein, institutePrimary path end to end and backup path are stated without intermediate interdigitated node;

    The interface message of the backup forward node is sent to the primary forward node by the controller, so that described primaryForward node detects that the primary forward node failure of next-hop or the primary forward node and the primary forwarding of the next-hop saveWhen network link failure between point, by the primary forward node according to the interface message of the backup forward node by one endThe IP packet transmitted is switched to the backup forward node, and by the backup forward node on the backup path withThe IP packet is transferred to the other end as starting forward node by the backup forward node;

    The interface message of the backup forward node is sent to the primary forward node by the controllerThe controller gives the primary forward node, the interface using Border Gateway Protocol (BGP) transmission interface state table PSTState table PST includes the interface message of the backup forward node of the primary forward node, the backup of the primary forward nodeThe interface priority of the primary forward node of next-hop of the interface priority of forward node and the primary forward node,In, the interface priority of the primary forward node of next-hop of the primary forward node is higher than the backup of the primary forward nodeThe interface priority of forward node.

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