According to an example, in a network having a plurality of routing bridges (RBs), a first RB may assign, based on a NickName of each RB in a NickName routing table at a control plane, a unicast tunnel label taking the NickName as a forwarding equivalence class (FEC), and may establish a point to point (P2P) label switched path (LSP) tunnel between the first RB and other RBs in a network. In addition, the first RB may at least one of receive and transmit a packet through the established P2P LSP tunnel.