Administration Guide › Set Up Distribution and Routing › DSAs with the Same Prefix › Failover and Failback › Client Failover between Router DSAs

Client Failover between Router DSAs

If a router DSA fails, all access to the data DSAs stops. To prevent this, you can set up the client application to failover between router DSAs as follows:

1. Run more than one router DSA on more than one computer.
2. Configure the client applications to failover from one router DSA to the other.

Nearly all large directory-enabled third-party applications can be configured to do this.

Example: Client Fails Over to Second Router

The following diagram shows a simple directory system with two kinds of failover.

As in Failover Between Hosts, the router DSAs can fail over to the second data DSA. However, this system also shows that the client application can fail over between the two router DSAs.

These two router DSAs are set up to use the data DSAs in exactly the same way, which means that the service to the client application is not interrupted.