HP Multi-Site Traffic Director sa9200 - Manual (Page 37)

C H A P T E R 4 Scenario 1
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Step 7. Configure the Secondary SA9200.
Type the IP address of the primary SA9200 (10.1.1.1).
HP SA9200# config dns secondary 10.1.1.1
Warning: Your current configuration will be
lost.
Are you sure you want to become a Secondary
(yes|no) ? yes
Now running as a Secondary
In a matter of seconds after issuing the command, the secondary has
a copy of the configuration from the primary.
Subsequent commit all commands automatically transfer the
configuration to every attached secondary. This automatic process of
transferring (copying) a configuration from primary to secondary
SA9200s is called Global Sync.
Step 8. Delegate authority to the SA9200s.
The primary name sever responsible for the mstd-ex.com domain
needs to be modified. The modifications vary depending on the type
and version of the DNS server used. For this example it is assumed
that a Bind server is being used.
At a Bind DNS server, add the following lines to the database file for
the mstd-ex.com domain. Typically this file would be called
something like “db.mstd-ex”.
geo.mstd-ex.com. IN NS nswc.mstd-ex.com.
geo.mstd-ex.com. IN NS nsec.mstd-ex.com.
nswc.mstd-ex.com. IN A 10.1.1.1
nsec.mstd-ex.com. IN A 10.1.2.1
www.mstd-ex.com. CNAME www.geo.mstd-ex.com.
Step 9. Verify the configuration and network operation.
There are many tools available to accomplish this step. The simplest
is to ping www.mstd-ex.com. Since we have initially configured for
Weighted Round Robin (with a weight of 1) we expect to ping
10.2.1.100. After waiting at least 60 seconds (the default Time To
Live for a SA9200 response) perform another ping. This time it
should ping 10.2.2.100. Performing this a third time should result in
the first service being pinged again.