17-3
User Guide for Cisco Secure Access Control System 5.4
OL-26225-01
Chapter17 Configuring System Operat ions
Understanding Distributed Deployment
ACS 5.4 supports one primary and twenty secondary servers in a large ACS deployment. The medium
ACS deployment consists of one primary and twelve secondary servers. Also, all ACS 5.4 deployments
supports 100,000 AAA clients, 10,000 network device groups, and 150,000 hosts. ACS 5.4 log collector
server can handle 2 million records per day and 750 messages per second for stress that are sent from
various ACS nodes in the deployment to the log collector server.For more information on ACS server
deployments, see:
http://www.cisco.com/en/US/docs/net_mgmt/cisco_secure_access_control_system/5.2/installation/
guide/csacs_deploy.html.
Note ACS 5.4 does not support the large deployment with more than twenty one ACS instances.
Related Topics
•Activating Secondary Servers, page 17-3
•Removing Secondary Servers, page 17-4
•Promoting a Secondary Server, page 17-4
•Understanding Local Mode, page 17-4
•Understanding Full Replication, page 17-5
•Specifying a Hardware Replacement, page 17-5
Activating Secondary Servers
To add a server to a deployment:
Step1 From the secondary server, issue a request to register on the primary server by selecting the Deployment
Operations option.
Step2 Activate the secondary instance on the primary server.
You must activate the secondary instance on the primary instance in order for the se condary instance to
receive configuration information; this provides a mechanism of admission cont rol.
However, there is an option to automatically activate newly added secondary instances, rather than
performing a manual activation request.
Related Topics
•Removing Secondary Servers, page 17-4
•Promoting a Secondary Server, page 17-4
•Understanding Local Mode, page 17-4
•Understanding Full Replication, page 17-5
•Specifying a Hardware Replacement, page 17-5