In the example of FIG. 4, when there is too much load of incoming subscribers or when the incoming subscriber load is out of proportionate across the instances, there is need to balance the load in order to achieve a higher call setup rate. As such, NLB 347 may maintain credits or tokens for each of the instances. Such credits or tokens may each indicate how many incoming subscriber logins a respective BNG instance may operate. NLB 347 may re-compute the tokens and/or credits based on the resources and current incoming subscriber rate. NLB 347 may be configured with low and high watermarks of a load. Depending upon the watermarks, NLB 347 may change a number of tokens per instance and publish to each of the instance. In this way, an instance may allow only those many incoming subscriber logins as described in the following.
