Dell PowerConnect W Clearpass 100 Software 3.7 Deployment Guide - Page 348
Network Architecture, virtual IP address, Replication
View all Dell PowerConnect W Clearpass 100 Software manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 348 highlights
A cluster's virtual IP address is a unique IP address that will always be assigned to the primary node of the cluster. In order to take advantage of the cluster's fault tolerance, all clients that use the cluster must use the cluster's virtual IP address, rather than each node's IP address. Replication is the process of ensuring that the secondary node maintains an exact copy of the primary node's database contents and configuration. Replication is used to ensure that if a failover is required, the secondary node can continue to deliver an uninterrupted service to clients of the cluster. See "About High Availability Systems" for the following settings and procedure.. Keep-alive Database replication. Configuration replication Downtime threshold Network Architecture The figure below shows the network architecture for a high availability cluster. Figure 43 Network architecture of high availability cluster The key points to note about this architecture are: The RADIUS and Web server protocols (HTTP and HTTPS) are supported by the cluster. The cluster has three IP addresses: each node has its own IP address, and there is a virtual IP address for the cluster which will always be assigned to the primary node in the cluster. For the cluster to provide failover redundancy, all network access servers and operators must use the cluster's IP address. The network administrator should use the node IP addresses to perform system administration tasks on each node, including managing the cluster itself. 348 | High Availability Services Amigopod 3.7 | Deployment Guide