Feature Description

SMF supports the auto-throttling feature to better utilize the IP pools and manage the IP address chunk allocation across multiple UPFs. Enabling this feature helps balance the load across UPFs by allowing the SMF to throttle additional or new IP address chunk allocation based on UPF capacity as advertised by the UPF, or local configuration on SMF.

In this feature, when the throttle hits, then no further chunk allocation happens. However, if the chunks are already allocated, it continues to facilitate the calls until all the chunks are exhausted.

Maximum supported sessions can be configured:

  1. Per network element (UPF) level

  2. Per vDNN basis (also applicable per UPF level)

If both are configured, then the minimum of two values gets applied for that UPF. Both these configurations are done using the new introduced CLI max-upf-sessions .