A common practice when setting up Load Balancers and creating highly available services is the need to have a keep alive test to ensure the service is up and running well. In the world of Citrix NetScalers and high availability this practice does not always suit. The reason behind this is that the NetScaler will respond to ICMP echo requests on behalf of the vIP in the event that all the back end services are down unless you specifically specify otherwise. To resolve this follow these steps.
Citrix NetScaler Load Balancer ICMP Response
