This is the tunnel type -- static, dynamic, or FRR (fast-reroute) -- bundled into a trap so the receiving NMS knows immediately whether the affected head-end tunnel was manually provisioned, RSVP-TE signaled, or a backup LSP, without a separate lookup. This distinction changes how an admin should react: a state change on an frr(3) tunnel might just mean a protection switch happened, while the same event on a static(1) tunnel implies someone's fixed configuration stopped working. For example, a trap reporting type dynamic(2) alongside an oper-down event tells the admin to check RSVP-TE signaling rather than static label configuration.