This reports whether this static co-routed bidirectional tunnel is actually up and forwarding, which for a manually-configured LSP means the forwarding hardware has successfully programmed both the forward and reverse label paths along the shared route. An admin treats a down oper state here as a data-plane fault affecting the entire two-way circuit at once, unlike an associated tunnel where only one leg might independently fail. For example, an admin-enabled co-routed tunnel reporting oper state down implies both directions of the circuit are affected, so the admin should check the single shared next hop rather than two separate legs.