Port block allocation

This feature allocates ports to subscribers in blocks and generates logs during block allocation or release. Deterministic port block allocation allows the mapping of a subscriber's IP address to an external address and port number using predefined algorithms. This feature reduces excessive log generation. To configure port block allocation, include the block-size, max-blocks-per-host, block-active-timeout, and log statements at the [edit security nat pool pool-name port block-allocation ] hierarchy level. To configure deterministic port block allocation, include the block-size and host statements at the [edit security source pool pool-name port deterministic ] hierarchy level.