LTE PTN transport network and static route protection method thereof

Abstract

The invention provides an LTE PTN transport network and a static route protection method thereof, comprising: determining that the route corresponding to the first primary PE node is unreachable whenthe multi-segment Peer BFD pre-configured and deployed between the first primary PE node and the second primary PE node in the LTE PTN transport network detects that IP is unreachable; connecting thethird primary PE node between the first primary PE node and the second primary PE node; controlling the physical interface associated with the BFD to be turned off, so that the primary route of the first primary PE node to the third primary PE node is revoked; and activating the IP / VPN hybrid FRR route, so that the next hop of the first primary PE node points to the standby PE node corresponding to the first primary PE node. The invention realizes the protection of the multi-point failure scenario in the LTE PTN transmission network, greatly reduces the blocking probability of the LTE whole network, and improves the 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 on the basis of 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 ...

AI Technical Summary

Problems solved by technology

[0020] 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

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