On the 6th June 2019, a China Telecom (Europe) Ltd (CTE) engineer discovered a Border Gateway Protocol (BGP) interruption at Safe Host SA – a Swiss client, during a routine customer network maintenance task. The engineer increased the prefixes limit during troubleshooting and then found out that the customer advertised massive numbers of abnormal prefixes, resulting in anomalous route propagated to some of the peering providers and customer circuits lasting for approximately one hour. The incident was resolved after an immediate action.
Since the incident, CTE has been actively in contact with Safe Host SA. A further investigation will be conducted jointly by CTE and Safe Host SA.
We sincerely apologise to customers being affected and any inconvenience caused by this incident.
2019年6月6日中国电信欧洲公司工程师进行客户BGP路由状态检查期间，发现与客户Safe Host SA之间的边界网关协议（BGP）中断，在进行故障处理时提高了路由条目上限，但随后发现该客户广播了大量异常路由，导致中国电信与部分运营商和客户路由出现异常，历时1小时左右。经紧急处理后，与部分运营商和客户的路由异常故障得以解决。近日来，中国电信欧洲公司在积极与Safe Host SA联系，我们还要与其一起就故障原因做进一步分析研究。由此给客户带来的不便，我们深感歉意。