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TANDBERG Gatekeeper User Guide
Page 34 of 105
7.5. Bandwidth Control Examples
7.5.1. Example without a firewall
One possible configuration for the deployment in Figure 9 is shown in Figure 13. Each of the offices is
represented as a separate subzone, with bandwidth configured according to local policy. The
enterprise's leased line connection to the Internet, and the DSL connections to the remote offices, are
modeled as separate pipes.
Figure 13: Bandwidth control example
There are no firewalls involved in the scenario shown in Figure 9, so we can configure links between
each of the offices. Each link is then assigned two pipes, representing the Internet connections of the
offices at each end of the link. A call placed between the Home Office and Branch Office will consume
bandwidth in the Home and Branch subzones and on the Home and Branch pipe. The enterprise's
bandwidth budget will be unaffected by the call.
7.5.2. Example with a firewall
If we modify our deployment to include firewalls between the offices, we can use the firewall traversal
capability of the TANDBERG Gatekeeper and Border Controller to maintain connectivity.
Figure 14: Network deployment with firewalls
In Figure 14, the endpoints in the enterprise register with the Gatekeeper, whilst those in the branch and
home office register with the Border Controller.