Specifications

Replication
BlueSecure™ Controller Setup and Administration Guide 14-11
A Comparison of Standard and Cascaded Replication
In addition to the standard replication configuration described above, v4 (and later) of
the BSC system software also supports a cascaded replication configuration. The
following figure illustrates a standard BSC replication configuration and a cascaded BSC
replication configuration.
In a standard replication configuration, all Replication Nodes receive their configuration
from a single Replication Master. For example, in the preceding figure, Nodes BSC B,
BSC C, and BSC D all receive their configuration from BSC A. We recommend that you
use a standard replication configuration for networks of up to ten BSCs.
In a cascaded replication configuration, a BSC that is configured to act as a Replication
Node for a Replication Master is also configured to act as a Replication Master for other
Replication Nodes. For example, in the preceding figure, Nodes BSC F, BSC G, and BSC
H all receive their configuration from BSC E, while Nodes BSC I and BSC J receive their
configurations from the combination Master/Node BSC F.
You may configure as many combination Replication Master/Node BSCs as required to
support your network. The cascaded configuration scales the replication feature by
preventing a single BSC from being overrun with configuration requests. We recommend
that you use a cascaded replication configuration for networks of more than ten BSCs.
You should configure your network such that no more than ten BSCs receive their
configurations from the same Replication Master.
Figure 14-10: Standard and Cascaded Replication Configurations
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Standard Replication Configuration
Replication
Master
Cascaded Replication Configuration
Replication
Nodes
BSC A
BSC B BSC C BSC D
Replication
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BSC E
Replication
Nodes
Replication
Master/Node
BSC H
BSC F
BSC JBSC I
Replication
Nodes
BSC G