Azure Data Factory Linked Service to connect Batch Account and Node with private endpoint

HI All, 

I am trying to connect batch account and batch pool from Azure Data Factory where batch pool is configured in private network. 

Steps followed. 
1. created private link service to connect batch account and node by adding the domain names of batch account and node

2. tried to establish connection but it failed to connect to batch pool (pool with virtual network).

I am not clear on the steps to be implemented in loan balancer which needs to be configured for private links service. I have added front end ip as Virtual network IP, backend pool as batch pool ip.

I couldn't find proper document for this setup. please help if anyone come across this scenario or any document which explains in detail.

Thanks,

Sathish