Method and device for efficiently forwarding BUM traffic of EVPN (Enhanced Virtual Private Network)

• Main Authors: CHEN QINGHUA, XING JIAMAO
• Format: Patent
• Language: Chinese; English
• Published: 12.03.2024
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a BUM traffic efficient forwarding method and device for an EVPN, and the method comprises the steps: expanding the content recorded by an ES member list, recording all ES members on each PE according to a Type4 route and a Type1 route, and marking the DF marks of the ES members at the same time. And when the BUM flow is forwarded, the BUM flow is only sent to the PE member with the DF mark. According to the method and the device, whether to copy and bear the message or not is decided at the head end PE of the BUM traffic forwarding, and the BUM traffic is only copied and forwarded to the PE equipment of the DF, so that unnecessary BUM traffic copying and forwarding can be reduced, and the BUM traffic forwarding efficiency of the EVPN is effectively improved. 本发明公开了一种EVPN的BUM流量高效转发方法及装置，在方法中，拓展ES成员列表记录的内容，根据Type4路由和Type1路由，每个PE上均记录所有ES成员，同时标记该ES成员的DF标记。在BUM流量转发时，仅向带DF标记的PE成员发送BUM流量。本发明在BUM流量转发的头端PE处，决策是否进行报文的复制承载，仅向DF的PE设备复制和转发BUM流量，可减少非必要的BUM流量复制和转发，有效提高EVPN的BUM流量转发效率。