Why is the virtual server pingable even if all real servers are down/failed?

[Anonymous]

Why is the virtual server pingable even if all real servers are down/failed? I do have a virtual server with 3 real servers behind. The virtual servers IP address is pingable even if all real servers are disconnected (down) - why that?

[Anonymous]

A virtual server IP is a load balancer owned IP (it is owned by the ServerIron / ADX). It is available in case the ServerIron is available. This is the IP address of the virtual server and not the service offered by the virtual server. The ServerIron is not taking the virtual server IP down in case the services are not available - the IP address is still pingable by default. Please have a look at the following command

server  disable-ping-vip-down

This is going to take the virtual server IP down in case the services offered by the virtual server are not available anymore. Disconnecting the real servers would result in virtual server which is not pingable anymore.

Hope this helps.