Manual: You can initiate a manual failover to designate the current You can monitor these tasks from the Event Timeline. System-triggered: As soon as Cisco DNA Center recognizes that your active site has gone down, it automatically carries out the tasks required to establish your standby Historical Assurance data from the former active site isįailover: Cisco DNA Center supports two types of failover: System initiates a failover and your standby site takes over as the activeĪfter a failover, Assurance restarts and processes a fresh set of data on the In the event that your active site goes down, your Standby site: The site that maintains an up-to-date copy of your active site'sĭata and managed services. To establish this site as your system's standby site, click Rejoin in the Action area. Standby Ready: When an isolated site meets the prerequisites to become a standby site, Cisco DNA Center moves it to this state. Of the active site's data and disabling the services which manage the network on the standby site. Cisco DNA Center continuously replicates its data to your standby site.Ĭonfigure Standby: The process of establishing a site as the standby site, which involves tasks such as configuring the replication Involves tasks such as exposing the appropriate managed service ports.Īctive site: The site that is currently managing your network. For more information,Ĭonfigure Active: The process of establishing a site as the active site, which Token that is generated when you register your main site. Registering your recovery or witness site, you will also need to provide the With the system by providing information such as your main site's VIP. Register: To add a site to a disaster recovery system, you must first register it Cisco DNA Center uses the witness site to arbitrate between the active and standby sites, allowing only one active site at any given time.įor a description of witness site requirements, see Prerequisites. Each site believes that it should become active, creating two active sites. This scenario can occur in a two-member system when the sites cannot communicate with each In the event that a site fails, this prevents the splitīrain scenario from taking place. Its role is to give the currentĪctive site the quorum it needs to carry out disaster recovery tasks. Machine or separate server, is not involved with the replication of data or managed services. Witness site: The third site you configure when setting up your disaster recovery system. By default, it acts as your system's standby site. Recovery site: The second site you configure when setting up your disaster By default, it operates as the active site that manages your network.įor information on how to configure the sites in your system, see Configure Disaster Recovery. Main site: The first site you configure when setting up your disaster recovery The following terms are key for understanding Cisco DNA Center's disaster recovery implementation: Refer to the topics in this chapter for a description of how to set up and use disaster recovery in your production environment. Whenever an active site goes down, Cisco DNA Center automatically initiates a failover, completing the tasks necessary to designate the former standby site as the new active Your network while the standby site maintains a continuously updated copy of the active site's data and managed services. Network management duties to a connected cluster (referred to as a site going forward).Ĭisco DNA Center's disaster recovery implementation consists of three components: the main site, the recovery site, and the witness site.Īt any given time, the main and recovery sites are operating in either the active or standby role. Disaster recovery deals with a cluster failure by handing off HA deals with a cluster nodeįailure by switching operations to connected cluster nodes. Troubleshoot Your Disaster Recovery Systemĭisaster recovery builds upon the high availability (HA) that Cisco DNA Center already provides by adding another layer of redundancy to safeguard against network downtime.
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