(2) Cross-access ring SR-BE within the convergence ring: Prioritize the convergence link, reroute the backbone convergence pair interconnection, and not bypass other access rings and convergence rings;
(2) Convergence ring across access ring SR-BE: priority to take the convergence link, rerouting to take the backbone convergence to interconnect, do not bypass other access ring, convergence ring;
(2) Cross access ring sr-be in the convergence ring: take the convergence link first, reroute the backbone convergence pair interconnection, and do not bypass other access rings and convergence rings;<BR>