HP Multi-Site Traffic Director sa9200 User Manual
Page 34
C H A P T E R 4
HP Multi-Site Traffic Director Server Appliance SA9200 User Guide
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Step 2. Select HTTP probe as the ISV method and associate a
URL with each service.
Since there are no load balancers, ISV must be used to determine site
service availability. In this scenario the site represents a distributed
Web site. The best way of determining site service availability is a
combination of ISV and traffic monitoring. Only a load balancer can
do this. The next best thing is ISV using an HTTP probe. For this
scenario only the main Web page (http://www.mstd-ex.com/
main.html) is probed.
NOTE: Only the actual
file name is entered in the
URL string. The Service
VIP and Port already
imply http://www.mstd-
ex.com.
HP SA9200/config/dns/isvgroups/westcoastsite/
services/10.2.1.100:80#url /main.html
URL set to /main.html
HP SA9200/config/dns/isvgroups/eastcoastsite/
services/10.2.2.100:80#url /main.html
URL set to /main.html
Step 3. Create the delegated zone for the hostname and the
authority records for the zone.
In order for the rest of the world to know that the SA9200s are the
place to go for resolving the hostname www.mstd-ex.com they must
be made authoritative for the domain mstd-ex.com. This could be
impractical, so the solution is to make the SA9200s authoritative for
a zone within the mstd-ex.com domain, rather than for the entire
domain.
For this example the authoritative name server for the mstd-ex.com
domain delegates authority of a new zone within its domain to the
SA9200. This zone is called geo.mstd-ex.com. The hostname
www.mstd-ex.com is aliased to www.geo.mstd-ex.com. Anyone
querying the mstd-ex.com name server for the address of www.mstd-
ex.com is told to ask one of the SA9200s for the address of
www.geo.mstd-ex.com.
HP SA9200# config dns zones
HP SA9200/config/dns/zones# create geo.mstd-
ex.com
Zone geo.mstd-ex.com created.
HP SA9200/config/dns/zones/geo.mstd-ex.com#
create-authority nswc.mstd-ex.com ip 10.1.1.1
Authority record nswc.mstd-ex.com created
HP SA9200/config/dns/zones/geo.mstd-ex.com#
create-authority nsec.mstd-ex.com ip 10.1.2.1
Authority record nsec.mstd-ex.com created