A kind of LTE PTN transmission network and its static routing protection method

Abstract

The present invention provides an LTE PTN transmission network and a static route protection method thereof, comprising: when the multi-stage Peer BFD pre-configured and deployed between the first active PE node and the second active PE node in the LTE PTN transport network detects an IP When it is unreachable, it is determined that the route corresponding to the first active PE node is unreachable; a third active PE node is connected between the first active PE node and the second active PE node; The linked physical interface is shut down, so that the active route from the first active PE node to the third active PE node is revoked; the IP / VPN hybrid FRR route is activated, so that the first active PE node The next hop points to the standby PE node corresponding to the first active PE node. The present invention realizes the protection of multi-point failure scenarios in the LTE PTN transmission network, greatly reduces the blocking probability of the entire LTE network, and improves network security.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to an LTE PTN transmission network and a static route protection method thereof. Background technique [0002] The existing LTE backhaul network is built based on PTN. The network structure and traffic model of the TD-LTE transmission network are as follows: figure 1 As shown, the base station service enters the metropolitan PTN network by accessing the PTN, passes through the metropolitan L2 / L3 convergence core node to the metropolitan L3 core node, and then transmits it to the EPC core network through the L3VPN of the provincial backbone PTN system. Under normal circumstances, all LTE service traffic and main network management traffic are backhauled from the L3 of the prefecture-city complex building to the provincial backbone L3 of the prefecture-city complex building to the core L3 equipment of the provincial capital, and finally backhauled to the EPC core networ...

AI Technical Summary

Problems solved by technology

[0019] Aiming at the defects of the prior art, the present invention provides an LTE PTN transport network and its static route protection method, which can solve the problems in the prior art of lack of linkage mechanism between static L3VPN and Native IP static route and lack of effective protection optimization method

Images