You could be more explicit in describing what you are trying to do.
You could create a DNS alias for all your indexers and forward to the DNS name.
You could also create a VIP using a load-balancer and forward to the VIP.
Finally if you just want the http events balanced among your indexers, you could set up a heavy forwarder, send all the events to it and then have it load balance it's ouput (via outputs.conf) to all indexers.
I'm looking to setup a VIP for this, but when using port 8089 as the VIP Health Check it keeps showing as down. Has anyone configured a VIP for the HEC?