Multiprotocol Label Switching (MPLS) 299 LDP options x.x.x.x Label Switch Router (LSR) id ipv4 LSR ipv4 id LDP Id of neighbor ipv4 neighbor IPv4 id Peer password Discovery parameters ipv4 Discovery parameters Transport ipv4 address ipv4 IPv4 bind as transport Transport ipv6 address ipv6 IPv6 bind as transport Listen interface for LDP