site level aggregation (IPv6) (SLA)

The Site Level Aggregation (SLA) is a 16-bit long data field in the addressing area of the IPv6 protocol, which represents the lowest level of the address, after Next Layer Aggregation ( NLA) and Top Level Aggregation( TLA), and follows the Next Level Aggregation data field.

The 16-bit Site Level Aggregation data field can be used to address 65,535 (2^16-1) different networks, resulting in correspondingly comprehensive routing tables.