| 摘要 |
PROBLEM TO BE SOLVED: To achieve IP forwarding across a link state protocol controlled Ethernet network.SOLUTION: Nodes on the Ethernet network operate on a link state protocol on the control plane and install shortest paths into their FIBs to allow packets to follow shortest paths through the network without requiring MAC header replacement at each hop on the network. When a node learns an IP address, it inserts the IP address into an LSA to advertise reachability of the IP address on the network. Each node adds this IP address to its link state database. If a packet arrives at an ingress node, the ingress node reads the IP address, determines which node on the link state protocol controlled Ethernet network advertised the IP address, and constructs an MAC header to forward the packet to the node. |
