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Clusters and Servers
2
Novell ZENworks Network Access Control introduces clusters and servers. A cluster is a logical
grouping of one or more ESs that are managed by one MS.
A single-server installation is one where the MS and ES are on one server. The ES is assigned to a
Default cluster. This configuration is illustrated in
A multiple-server installation is one where the MS is on one server and there are one or more ESs on
separate servers. Each ES must be assigned to a cluster. This configuration is illustrated in
2 on page
35.
The responsibilities of the MS and ES are as follows:
MS
Configuration
NAC policies
Quarantining
Endpoint activity
License
Test updates
ES
Testing
Access control
The quarantine method is defined per cluster; all of the ESs in a given cluster use the same
quarantine method (Inline, DHCP, or 802.1X). When using multiple clusters, each cluster can have a
different quarantine method. Clusters cooperate to test and control access to the network, although
the ESs in each cluster are not able to communicate with any ES in any other cluster.
The following sections contain more information:
Section 2.1, "Single-server Installation," on page 34
Section 2.2, "Multiple-server Installations," on page 34
Figure 2-1 on page
34.
2
Figure 2-
Clusters and Servers
33
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