Belkin router LSP Configuration

Today we will talk about the establishment of LSP in the MPLS network by the Belkin router. I believe many people do not quite understand what the MPLS network structure is. I will give you a brief introduction below.
1. MPLS network structure 1. The so-called MPLS network is the basic unit of the label exchange router LSR. It mainly runs the MPLS network control protocol and the layer-3 routing protocol, it is also responsible for exchanging route information with other LSR to establish route tables, map FEC and IP grouping headers, establish binding between FEC and tags, and distribute tag binding information, create and maintain tag forwarding tables. Www.2cto.com 2. The network composed of LSR is called the MPLS domain, and the LSR at the edge of the region is called the edge LSR. It connects the MPLS domain and non-MPLS domain and functions of different MPLS network domains, it also classifies, distributes, and removes tags from services.
3. The entry LER is called Ingress, And the exit LER is called Egress. The LSR in the region is called the core LSR. The core LSR can be a router supporting MPLS networks or an LSR supporting MPLS network Label Switching. It provides Label Distribution and switching functions, the tagged groups are transmitted along the label exchange path LSP consisting of a series of LSR. 4. Path: www.2cto.com (1) marking the switching path (LSP) (2) MPLS network core router (LSR) (3) Ingress (4) Egress (5) MPLS network edge router (LER)
2. The establishment of LSP1 and LSP is actually the process of binding FEC and tags and notifying the adjacent LSR on the LSP, this process is implemented through the Label Distribution Protocol (LDP). LDP specifies the message interaction process, message structure, and routing selection method between LSR. Www.2cto.com 2. MPLS network supports LSP tunneling technology. In an LSP path, LSR Ru and LSR Rd are upstream and downstream, but the path between LSR Ru and LSR Rd is, it may not be part of the path provided by the routing protocol. MPLS allows creating a new LSP path between LSR Ru and LSR Rd, the LSR Ru and LSR Rd are the start and end points of the LSP respectively. 3. the LSP between LSR Ru and LSR Rd is the LSP tunnel, which avoids the traditional network layer encapsulation tunnel, when the routing and hop-by-hop of a tunnel are the same as those obtained from the routing protocol, this tunnel is called a hop-by-hop routing tunnel. Otherwise, this tunnel is called an explicit routing tunnel.