![]() When a link fails, through VRRP, the new master and standby devices can be negotiated, but several seconds are needed and the requirements of carrier-grade services cannot be met. BFD is also enabled between the ME device and the LSW to detect links between the ME device and the LSW. The ME60 supports active/standby status selection of interfaces and sub-interfaces.īFD is enabled between the two ME devices to detect links between the two devices. The remote backup profile (RBP) is a configuration template that provides a unified user interface for dual-device backup configurations.įigure 5-151 Diagram of the active/standby switchover for high reliability of servicesĪs shown in Figure 5-151, the two ME devices negotiate the master and standby states using VRRP. ![]() When a master/backup VRRP switchover occurs, service traffic quickly switches to a new master device. A service module uses the RBS to synchronize service control data from the master device to the backup device. The remote backup service (RBS) is an RUI module used for inter-device backup. RUI, which is carried over the Transmission Control Protocol (TCP), specifies which user information can be transmitted between devices and the format and amount of user information to be transmitted. RUI is a Huawei-specific redundancy protocol that is used to back up user information between devices. If the next hop of a host is faulty, VRRP switches traffic to another router, which ensures communication continuity and reliability.įor details about VRRP, see the chapter "VRRP" in ME60 Feature Description - Network Reliability. VRRP is a fault-tolerant protocol that groups several routers into a virtual router. If VRRP is used as a master/backup status negotiation protocol, dual-device backup involves the following concepts:
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