A method comprising: outputting, with a plurality of routers connected as a ring network, a plurality of messages in accordance with a label distribution protocol to establish a multi-protocol label switching, MPLS, ring having at least one ring label switched path, LSP, to transport MPLS packets around the ring network to one of the routers operating as an egress router for the ring LSP, wherein the ring LSP comprises a multipoint-to-point, MP2P, LSP for which any of the routers within the ring network can operate as an ingress to source packet traffic into the ring LSP for transport to the egress router for the ring LSP, and wherein each of the messages output by the routers includes an identifier of the MPLS ring and an identifier for the respective one of the plurality of routers that operates as the egress router for the ring LSP and specifies bandwidth requirements in a downstream direction to the egress router for any packet traffic to be sourced into the ring LSP by the respective one of the routers around the ring LSP, wherein the downstream direction corresponds to a clockwise or anticlockwise direction of the ring network and an upstream direction corresponds to the other of the clockwise or anticlockwise directions of the ring network; after establishing the ring LSP, receiving, with a first intermediate one of the routers around the ring LSP, first configuration data provisioning additional network traffic to be sourced by the first intermediate one of the routers into the ring LSP; responsive to receiving the first configuration data, outputting an updated message with the first intermediate one of the routers to reserve bandwidth in the downstream direction around the ring LSP for the additional network traffic; and forwarding network traffic as MPLS packets around the ring network in accordance with the ring LSP. outputting, with a plurality of routers connected as a ring network, a plurality of messages in accordance with a label distribution protocol to establish a multi-protocol label switching, MPLS, ring having at least one ring label switched path, LSP, to transport MPLS packets around the ring network to one of the routers operating as an egress router for the ring LSP, wherein the ring LSP comprises a multipoint-to-point, MP2P, LSP for which any of the routers within the ring network can operate as an ingress to source packet traffic into the ring LSP for transport to the egress router for the ring LSP, and wherein each of the messages output by the routers includes an identifier of the MPLS ring and an identifier for the respective one of the plurality of routers that operates as the egress router for the ring LSP and specifies bandwidth requirements in a downstream direction to the egress router for any packet traffic to be sourced into the ring LSP by the respective one of the routers around the ring LSP, wherein the downstream direction corresponds to a clockwise or anticlockwise direction of the ring network and an upstream direction corresponds to the other of the clockwise or anticlockwise directions of the ring network; after establishing the ring LSP, receiving, with a first intermediate one of the routers around the ring LSP, first configuration data provisioning additional network traffic to be sourced by the first intermediate one of the routers into the ring LSP; responsive to receiving the first configuration data, outputting an updated message with the first intermediate one of the routers to reserve bandwidth in the downstream direction around the ring LSP for the additional network traffic; and forwarding network traffic as MPLS packets around the ring network in accordance with the ring LSP.