Cisco Systems CSACS3415K9 ACS Licensing Model, ACS Management Interfaces

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User Guide for Cisco Secure Access Control System 5.4

OL-26225-01

Chapter1 Introducing ACS 5.4

ACS Licensing Model

ACS 4.x did not provide incremental replication, only full replication, and there was service downtime

for replication. ACS 5.4 provides incremental replications with no service downtime.

You can also force a full replication to the secondary instance if configuration changes do not replicate

it. Full replication is used when a new secondary instance is registered and other cases when the

replication gap between the secondary instance and the prima ry instance is significant.

Table 1 -1 lists some of the differences between ACS 4.x and 5.4 replication.

For more information about setting up a distributed deployment, see Configuring System Operations,

page 17-1.

Note Replication does not work in ACS servers if you use the Cisco Overlay Transport Virtualization

technology in your Virtual Local Area Network.

Note Network Address Translation (NAT) is not supported in an ACS distributed deployment environment.

That is, if the network address of a primary or secondary instance is translated, then the database

replication may not work properly, and it may display a shared secret mismatch error.

ACS Licensing Model

You must have a valid license to operate ACS; ACS prompts you to install a valid base license when you

first access the web interface. Each server requires a unique base license in a distributed deployment.

For information about the types of licenses you can install, see Types of Licenses, page18-34. For more

information about licenses, see Licensing Overview, page 18-34.