This read-write field classifies a SPAN destination entry's role, indicating whether the current session is a local SPAN session or the start or final leg of a multi-switch RSPAN chain. Admins care because RSPAN configurations spanning multiple switches need each hop's role correctly identified for mirrored traffic to actually reach the analyzer. For example, an admin marks a destination as the RSPAN final session on the switch physically connected to the packet analyzer, distinguishing it from an intermediate switch just forwarding traffic onward.