3Com Router 3000 Ethernet FamilyConfiguration Guide Chapter 2 MPLS Basic Capability Configuration3Com Corporation2-14session: Displays debugging information in processing LDP sessionpdu: Displays debugging information in processing PDU packetsnotification: Displays debugging information in processing notificationsremote: Displays debugging information about all remote peers2.5 MPLS Configuration ExampleI. Network requirementsAs shown in Figure 2-1, there is a network consisting of four 3Com router routers,among which Router B and Router C are connected via SDH, and Router B, Router Aand Router D are interconnected via Ethernet.The four routers all support MPLS, and LSP can be established between any tworouters with the routing protocol OSPF.II. Network diagramRouter ARouter BRouter CRouter Dethernet8/0/0168. 1.1.1ethernet1/0/0168. 1.1.2ethernet1/0/1172. 17.1.1ethernet2/0/1172. 17.1.2serial2/0/0100. 10.1.2serial1/0/0100. 10.1.1Router ARouter BRouter CRouter Dethernet8/0/0168. 1.1.1ethernet1/0/0168. 1.1.2ethernet1/0/1172. 17.1.1ethernet2/0/1172. 17.1.2serial2/0/0100. 10.1.2serial1/0/0100. 10.1.1Figure 2-1 Network diagramIII. Configuration procedure1) Configuration on Router A:# Configure LSR ID and enable MPLS and LDP.[3Com] mpls lsr-id 168.1.1.1[3Com] mpls[3Com] mpls ldp# Configure IP address and enable LDP for Ethernet interface.[3Com] interface ethernet 8/0/0[3Com-Ethernet8/0/0] ip address 168.1.1.1 255.255.0.0[3Com-Ethernet8/0/0] mpls ldp enable# Enable OSPF on the interfaces connecting Router A and Router B[3Com] route id 168.1.1.1[3Com] ospf