Signaling: Identifying PW Endpoints L2VPNs can be built over PWE3 PseudoWires L2VPN/PWE3 framework: signaling connects two “Forwarders”. “Martini signaling”: to connect 2 Forwarders by a PW: Provision a 32-bit “name” (VCid) Configure each Forwarder with VCid Each Forwarder independently initiates unidirectional LSP |