拓扑：

 

R1配置：

mpls label range 100 199

mpls traffic-eng tunnels interface Loopback0 ip address 192.168.1.1 255.255.255.255 ! interface Tunnel1 ip unnumbered Loopback0 tunnel mode mpls traffic-eng tunnel destination 192.168.1.4 tunnel mpls traffic-eng path-option 10 explicit name r14 ! interface FastEthernet0/0 ip address 12.1.1.1 255.255.255.0 speed auto duplex auto mpls traffic-eng tunnels ip rsvp bandwidth 2048 ! router ospf 100 router-id 1.1.1.1 network 12.1.1.0 0.0.0.255 area 1 network 192.168.1.1 0.0.0.0 area 1 mpls traffic-eng router-id Loopback0 mpls traffic-eng area 1 ! ip route 192.168.1.4 255.255.255.255 Tunnel1 ! ip explicit-path name r14 enable next-address loose 192.168.1.2 next-address loose 192.168.1.3 next-address loose 192.168.1.4

R3配置：

mpls label range 300 399

mpls traffic-eng tunnels interface Loopback0 ip address 192.168.1.3 255.255.255.255 ! interface FastEthernet0/0 ip address 34.1.1.3 255.255.255.0 speed auto duplex auto mpls traffic-eng tunnels ip rsvp bandwidth 2048 ! interface FastEthernet0/1 ip address 23.1.1.3 255.255.255.0 speed auto duplex auto mpls traffic-eng tunnels ip rsvp bandwidth 2048 ! router ospf 100 router-id 3.3.3.3 network 23.1.1.0 0.0.0.255 area 0 network 34.1.1.0 0.0.0.255 area 2 network 192.168.1.3 0.0.0.0 area 0 mpls traffic-eng router-id Loopback0 mpls traffic-eng area 0 mpls traffic-eng area 2

R2配置：

mpls label range 200 299

mpls traffic-eng tunnels ! interface Loopback0 ip address 192.168.1.2 255.255.255.255 ! interface FastEthernet0/0 ip address 12.1.1.2 255.255.255.0 speed auto duplex auto mpls traffic-eng tunnels ip rsvp bandwidth 2048 ! interface FastEthernet0/1 ip address 23.1.1.2 255.255.255.0 speed auto duplex auto mpls traffic-eng tunnels ip rsvp bandwidth 2048 ! router ospf 100 router-id 2.2.2.2 network 12.1.1.0 0.0.0.255 area 1 network 23.1.1.0 0.0.0.255 area 0 network 192.168.1.2 0.0.0.0 area 0 mpls traffic-eng router-id Loopback0 mpls traffic-eng area 0 mpls traffic-eng area 1

R4配置：

mpls label range 400 499

mpls traffic-eng tunnels interface Loopback0 ip address 192.168.1.4 255.255.255.255 ! interface Loopback1 ip address 4.4.4.4 255.255.255.0 ! interface FastEthernet0/0 ip address 34.1.1.4 255.255.255.0 speed auto duplex auto mpls traffic-eng tunnels ip rsvp bandwidth 2048 ! interface FastEthernet0/1 no ip address shutdown speed auto duplex auto ! router ospf 100 router-id 4.4.4.4 network 4.4.4.0 0.0.0.255 area 2 network 34.1.1.0 0.0.0.255 area 2 network 192.168.1.4 0.0.0.0 area 2 mpls traffic-eng router-id Loopback0 mpls traffic-eng area 2

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