Monitoring link delays with one measurement host
Monitoring link delays with one measurement host
复制标题
DOI：
10.1145/1111572.1111578
复制
发表时间：
2005-12
期刊：
影响因子：
--
通讯作者：
H. Burch;C. Chase
中科院分区：
文献类型：
--
作者：
H. Burch;C. Chase
我们推出 RCM，这是一种使用单个测量主机监控网络链路延迟的系统。 RCM是一种新的测量系统和一种新的网络断层扫描技术的结合。测量系统使用隧道连接到边界路由器，在边界路由器上可以通过网络发送和接收测量结果。 RCM 使用网络断层扫描根据这些测量结果计算各个网络链路上的延迟。网络层析成像技术扩展了先前的线性代数技术，以处理结果数据的局限性，而无需假设链路延迟对称性或特定拓扑。将网络断层扫描技术与模拟中的直接测量进行比较，以确保准确性。 RCM 部署在大型 ISP 的网络上，用于诊断端到端延迟的原因，并从中提供其他结果。将结果与网络的已知行为进行比较，以确保结果与这些行为一致。分析系统是否能够查明端到端延迟变化的原因。
We present RCM, a system to monitor link delays on a network using a single measurement host. RCM is a combination of a new measurement system and a new network tomography technique. The measurement system employs tunnels to connect to border routers where it can source and sink measurements across the network. RCM uses network tomography to calculate the delays across individual network links from these measurements. The network tomography technique expands on previous linear algebra techniques to deal with the limitations of the resulting data without assuming either link delay symmetry or a particular topology. The network tomographic technique is compared against direct measurements in simulation to ensure accuracy. RCM is deployed on a large ISP's network to diagnose the cause of end-to-end delays, from which additional results are presented. The results are compared against known behaviors of the network to ensure the results are consistent with those behaviors. The system is analyzed for its ability to pin-point the cause of changes in end-to-end delay.