C H A P T E R 4 | Scenario 2 |
internet | |
Site 3 | |
Router | |
7190 | 7190 |
ns3.mstd-ex.com | ns4.mstd-ex.com |
10.1.3.1 | 10.1.3.2 |
generic | |
load balancer | |
Server
www.div2.mstd-ex.com
10.2.3.103:80
Site 3
Step 3. Create the delegated zones for the hostnames and the authority records for each zone.
Since 7190s are deployed at every site there is no reason to not utilize all of them to their full capabilities. All that is required to do this is to make all of the 7190s authoritative for both zones. Note that there is no need for the ns3 and ns4 to be listed as authoritative in the div1.mstd-ex.com zone. Further note that the 7190s used for hot standby redundancy are not listed as authorities. If it were not for the requirement of using Flash Response Mode for balancing www.div2.mstd-ex.com, there would need to be only two 7190s in the entire network. A 7190 only needs to be collocated (on the same network) with a site if Flash Response Mode is used and the load balancers are not configured as a primary Flash source for performance reasons.
config dns zones
create div1.mstd-ex.com div1.mstd-ex.com
create-authority ns1.mstd-ex.com ip 10.1.1.1 create-authority ns2.mstd-ex.com ip 10.1.1.2 create-authority ns3.mstd-ex.com ip 10.1.1.3 create-authority ns4.mstd-ex.com ip 10.1.1.4
