Method and device for determining retransmission routes of traffic engineering tunnels

Abstract

The invention discloses a method and a device for determining retransmission routes of traffic engineering tunnels. The method comprises obtaining configuration information of internet protocol (IP) route equipment in a data communication network, wherein the configuration information of the IP route equipment comprises node information, link information, tunnel port configuration information and traffic engineering (TE) explicit route configuration information; determining a topological matrix in a data communication network according to the node information and the link information; determining a TE tunnel identified by a starting point and a terminal point according to the tunnel port configuration information and the TE explicit route configuration information, and determining a next hop, a configuration sequence of the next hop and a containing mode of a node corresponding to the next hop of the TE tunnel; determining subsection retransmission routes of every two adjacent nodes of the starting point, each next hop and the terminal point which the TE tunnel sequentially passes; and determining retransmission routes of the TE tunnel according to the subsection retransmission routes. The method and the device for determining retransmission routes of traffic engineering tunnels can simply and effectively determine the retransmission routes of the TE tunnel.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and a device for determining a forwarding path of a traffic engineering tunnel in the communication field. Background technique [0002] An Internet Protocol (Internet Protocol, "IP" for short) bearer network is usually a Multi-Protocol Label Switching (Multi-Protocol Label Switching, "MPLS" for short) network. To ensure network reliability and control traffic, MPLS traffic engineering (Traffic Engineering, TE for short) will be deployed on the MPLS network. The distribution is performed according to the explicit path configuration, rather than according to the shortest path algorithm of the Interior Gateway Protocol (Interior Gateway Protocol, "IGP" for short). In order to monitor the direction and distribution of service flows in a network where MPLS TE is deployed, it is necessary to analyze the real path of the TE tunnel, that is, the forwarding path of the TE tunnel. [...

AI Technical Summary

Problems solved by technology

[0004] However, the above method is only suitable for monitoring the forwarding path and state changes of OSFP / IS-IS protocol TE tunnels, and the probe needs to establish a peer-to-peer (Peer) relationship with the network elements in the monitored network, so it is necessary to modify the configuration, and the special probe has a higher specification

Therefore, the current method adopted by the industry to monitor the forwarding path of TE tunnels through dedicated probes has defects such as high cost, complicated deployment, and large scenario limitations.

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