IP RAN 网络保护技术主要有：BFD、MPLS-TE、VRRP 等

IP RAN network protection technologies mainly include: BFD, MPLS-TE, VRRP, etc. BFD is used for Layer 2 and Layer 3 full link detection and diagnosis, MPLS-TE is used for resource scheduling and reselection, and VRRP is used for core layer router backup. <br>BFD is a two-way forwarding detection mechanism that can provide millisecond-level detection and rapid link detection. By linking BFD with upper-layer routing protocols, it can achieve rapid route convergence and ensure business continuity. <br>FRR technology: Fast re-route (Fast-reroute), which quickly changes the forwarding plane after a fault is detected, and the traffic is switched to the pre-calculated backup path. After fault recovery and re-convergence, traffic is switched back to the most optimal path. <br>VRRP is a backup routing protocol. After the service VRRP backup group is added to the management VRRP backup group, there is no need to send VRRP protocol packets to determine its own status. The management VRRP determines its own status by sending VRRP protocol packets, and thus determines the status of all service VRRPs to which it is bound. This greatly saves the problem of VRRP protocol packets occupying bandwidth

IP RAN network protection technology is mainly: BFD, MPLS-TE, VRRP and so on. BFD for two- and three-tier full-link detection and diagnostics, MPLS-TE for resource scheduling and re-selection, and VRRP for core-tier router backup.<br>BFD is a two-way forwarddetection mechanism, can provide millisecond detection, can achieve the fast detection of the link, BFD through the upper routing protocol, can achieve the rapid convergence of routing, to ensure the sustainability of the business.<br>FRR technology: Fast-rerouting, fast detection to the failure after modifying the forwardplane, traffic is switched to a pre-calculated backup path. After the recovery reconvergencests, the traffic is switched back to the most optimized path.<br>VRRP is a backup routing protocol, and once a business VRRP backup group is added to the Management VRRP backup group, it does not need to send a VRRP protocol message to determine its status. Managing VRRP determines its state by sending a VRRP protocol message, which determines the state of all the business VRRP it binds to. This significantly saves VRRP protocol messages to consume bandwidth

IP ran network protection technology mainly includes BFD, MPLS-TE, VRRP, etc. BFD is used for layer 2 and layer 3 full link detection and diagnosis, MPLS-TE for resource scheduling and reselection, VRRP for core layer router backup.<br>BFD is a two-way forwarding detection mechanism, which can provide millisecond level detection and realize fast link detection. BFD can achieve fast convergence of routing and ensure the sustainability of business through linkage with the upper layer routing protocol.<br>FRR Technology: fast reroute, which can quickly modify the forwarding plane after a fault is detected, and the traffic is switched to the pre calculated backup path. After the fault recovery re converges, the traffic is switched to the optimal path again.<br>VRRP is a backup routing protocol. After the business VRRP backup group is added to manage the VRRP backup group, it does not need to send the VRRP protocol message to determine its status. The management VRRP determines its own state by sending VRRP protocol messages, so as to determine the state of all service VRRP bound by it. In this way, the bandwidth occupied by VRRP packets is greatly reduced