Through analysis of MAN key client private line conservation status
we propose a new hot standby protection scheme
one manage VRRP realize batch standby switch of key client private lines
deploying BFD technology to ensure proper management of the state in manage VRRP. Key client private lines themselves do not enable VRRP protocol
but the same IP address on the pairing SR. Standby SR released by small COST value downstream traffic lanes routed to implement the interface standby switch after switching. Using this program can save public IP address
when failure to achieve large-volume customers fast automatic switching lanes
dedicated to improve the reliability of MAN key client private lines.