Functions of the OSPF protocol intended for ASON

The control plane of Huawei ASON applies the OSPF-TE, which is an extended protocol for OSPF, and implements the following functions.

Creates and maintains control links.

Establishes neighbor relationship.

Floods and collects the information about the control links on the control plane. Based on the information, the protocol then generates the information about the routes that are required for forwarding messages on the control plane.

Floods and collects the information about the TE links on the transport plane. The protocol then generates the information about the network service topologies for service trail computation.

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