A method for establishing a hard pipe in a network, wherein the network comprises multiple routers and a network management device, the multiple routers are connected to each other by using a link that has a particular bandwidth, and the method comprises: acquiring (S601), by the network management device, bandwidths of links between a first router and a second router, wherein the first router is one router of the multiple routers, and the second router is one router of the multiple routers; determining (S602), by the network management device, a static multiprotocol label switching, MPLS, label set; determining (S603), by the network management device, in the network, a path from the first router to the second router according to the bandwidths of the links acquired between the first router and the second router; allocating (S604), by the network management device, from the static MPLS label set, a corresponding MPLS label to each router on the path, and generating a label forwarding entry corresponding to each router; separately delivering (S605), by the network management device, the corresponding label forwarding entry to each router, instructing each router on the path to allocate a fixed bandwidth from a bandwidth of a link on the path, wherein the link to which the fixed bandwidth is allocated forms a sublink; and establishing (S606), by the network management device, on the path, a hard pipe from the first router to the second router by using the sublink and the router that allocates the sublink, wherein the hard pipe is a Label Switched Path, LSP, or a pseudo wire, PW, in the network, wherein the hard pipe has a fixed bandwidth, and the fixed bandwidth of the hard pipe is used to forward a leased line packet. acquiring (S601), by the network management device, bandwidths of links between a first router and a second router, wherein the first router is one router of the multiple routers, and the second router is one router of the multiple routers; determining (S602), by the network management device, a static multiprotocol label switching, MPLS, label set; determining (S603), by the network management device, in the network, a path from the first router to the second router according to the bandwidths of the links acquired between the first router and the second router; allocating (S604), by the network management device, from the static MPLS label set, a corresponding MPLS label to each router on the path, and generating a label forwarding entry corresponding to each router; separately delivering (S605), by the network management device, the corresponding label forwarding entry to each router, instructing each router on the path to allocate a fixed bandwidth from a bandwidth of a link on the path, wherein the link to which the fixed bandwidth is allocated forms a sublink; and establishing (S606), by the network management device, on the path, a hard pipe from the first router to the second router by using the sublink and the router that allocates the sublink, wherein the hard pipe is a Label Switched Path, LSP, or a pseudo wire, PW, in the network, wherein the hard pipe has a fixed bandwidth, and the fixed bandwidth of the hard pipe is used to forward a leased line packet. <EOS>