You can configure
a load balancing virtual server to automatically transition from the UP state
to the DOWN state if the percentage of active services falls below a configured
threshold. For example, if you bind 10 services to a load balancing virtual
server and configure a threshold of 50% for that virtual server, it transitions
from UP to DOWN if six or more services are DOWN. When the percentage health
rises above the threshold value, the virtual server returns to the UP state.
You can also
enable an SNMP alarm called ENTITY-STATE if you want the NetScaler appliance to
notify you when the percentage health of bound services causes a virtual server
to change state.