TANDBERG Gatekeeper User Manual
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3.6 Bandwidth Control
The TANDBERG Gatekeeper allows you to control endpoints’ use of bandwidth on your
network. Figure 5 shows a typical deployment: a broadband LAN, where high bandwidth calls
are acceptable, a pipe to the internet with restricted bandwidth, and two satellite offices, each
with their own restricted pipes. In order to utilize the available bandwidth efficiently, the
TANDBERG Gatekeeper allows you to model your network, and bandwidth controls on
individual components of the network. Bandwidth controls may be set on a call by call basis
and on a total concurrent usage basis.
Figure 5 Typical network deployment
All endpoints registered with your Gatekeeper are part of its local zone. As shown in Figure 5,
the local zone can contain many different networks with different bandwidth limitations. In
order to model this, the local zone is made up of one or more subzones. When an endpoint
registers with the Gatekeeper it is assigned to a subzone, based on its IP address.
By default all endpoints registering with the Gatekeeper are assigned to the default subzone.
This is suitable if you have uniform bandwidth available between all your endpoints. When
you have differing bandwidth provision, as in Figure 5, you should create a new subzone for
each pool of endpoints.
Subzones are added and configured through the web interface on the Gatekeeper
Configuration > SubZones page, or through the command line using the following commands:
xConfiguration SubZones SubZone [1..100] Name
xConfiguration SubZones SubZone [1..100] Subnet IP Mask
xConfiguration SubZones SubZone [1..100] Subnet IP Address
Subzones may be configured with links joining them to each other and to other zones. These
links are used to calculate how a call is routed over the network and so which zones and
subzones are involved. If multiple routes are possible, your Gatekeeper will select the one
with the fewest links.
Links may be configured through the web interface on the Gatekeeper Configuration > Links
page, or through the command line using the following commands:
xConfiguration Links Link [1..100] Name
xConfiguration Links Link [1..100] Node1 Name
xConfiguration Links Link [1..100] Node2 Name
xConfiguration Links Link [1..100] Pipe1 Name

IP

MCU
Enterprise
Home Office
DSL
Branch Office
1003
1002
1001
Gatekeeper