Chapter 7
7 - 8
You have now set up the load balancing and delegation pools for your
domain. The last required configuration step is to create a topology
statement.
Adding a topology statement
The topology statement contains the topology records that the 3-DNS
Controller uses to load balance DNS queries from geographically dispersed
local DNS servers. The following procedure describes how to set up a
topology statement, with two topology records, for our example.
Note
For more detailed information on working with topology on the 3-DNS
Controller, see Chapter 3, Topology, in the 3-DNS Reference Guide. For
information on setting up globally-distributed network with Topology load
balancing, see Chapter 6, Configuring a Globally-Distributed Network, in
this guide.

To set up topology records using the Configuration utility

1. In the navigation pane, click Topology.
The Manage Topology Records screen opens.
2. For the first topology record, select Continent in the upper LDNS
box.
3. In the lower LDNS box, select North America.
4. In the upper Server box, select Wide IP Pool.
5. In the lower Server box, select origin.
6. In the Weight box, type a value. For our example, we type 100.
7. Click Add.
The first topology record is added to the configuration.
8. For the second topology record, in the upper LDNS box select
Continent.
9. In the lower LDNS box, select North America.
10. Check the LDNS Not Equal box.
11. In the upper Server box, select Wide IP Pool.
12. In the lower Server box, select cdn_pool.
13. In the Weight box, type a value. For our example, we type 100.
14. Click Add.
The second topology record is added to the configuration.