多协议标签交换流量工程隧道实时监测方法——MTRM

针对现有工作无法实时动态监测多协议标签交换(MPLS)流量工程(TE)隧道状态变化的问题，提出了一种MPLS TE隧道实时监测方法--MTRM。在网络中植入被动采集探针以采集OSPF-TE信令，以此为基础构建网络模型，使用隧道路径实时监测算法进行实时的隧道路径计算，最终实现动态监测。仿真实验在15个节点的MPLS网络中进行。结果表明，MTRM能够在5s之内监测到隧道变化，准确率超过90%。这种MPLS TE隧道实时监测方法，大大降低了MPLS网络管理和流量工程实施的难度，具有广阔的应用前景。

MTRM: real-time monitoring method for multi-protocol label switch traffic engineering tunnel

The available network management approaches are not able to monitor Multi-protocol Label Switch(MPLS) Traffic Engineering(TE) tunnels dynamically in real-time.To address this problem,a real-time monitoring approach for MPLS TE tunnels,called MPLS TE Tunnels Real-time Monitoring(MTRM),was proposed in this paper.A probe was placed in the network to collect Open Shortest Path First-TE(OSPF-TE) signaling messages passively.Based on the collected information,a MPLS network model was built and tunnel paths were dynamically computed using the tunnel paths real-time monitoring algorithm.The MPLS TE tunnel paths could thus be monitored in real-time.The simulation experiments were carried out on a MPLS network with 15 nodes.The results show that the proposed approach can monitor the changes of MPLS TE tunnels within five seconds,with precision over 90%.This real-time monitoring approach can greatly reduce the difficulties of MPLS network management and TE implementation,and it has a wide application prospect.