Abstract: According to the needs of meteorological operations, for upgrading the network link at the national level, it is combined with the current network structure to realize MSTP + MPLS VPN link hot backup. The relevant agreements and core technologies which involve two kinds of link of MSTP and MPLS VPN are deeply analyzed. The configuration of the two kinds of network link structure is focused. The advantages of these two kinds of link for backup each other are fully explained. The bearing and transmitting meteorological business performance of the hot backup link is validated to realize the weather system of double security, to make the weather business transmission quality assurance of higher, and to give full play to the role of meteorological guards.

Key words: MSTP, MPLS VPN, QoS, protocol, backup