Interim logging for NAT port block allocation

You can can configure interim logging for NAT with port translation on MX Series with MS-MPCs or MS-MICs. Default logging sends a single log entry for ports allocated to a subscriber. These syslog entries can be lost for long running flows. Interim logging triggers re-sending of logs at configured time intervals for active blocks that have traffic on at least one of the ports of the block, ensuring that there is a recent syslog entry for active blocks. You can specify interim logging by including the pba-interim-logging-interval statement at the [edit interfaces interface-name services-options] hierarchy level.