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电信：interface Loopback0 ip address ! interface Serial0/0 ip address serial restart-delay 0 no fair-queue 网通;interface Loopback0 ip address ! interface Serial0/0 ip address serial restart-delay 0 no fair-queue r1； interface Loopback0 ip address ! interface Serial0/0 ip address interface Ethernet1/0 ip address half-duplex ! interface Ethernet1/1 ip address half-duplex ! interface Ethernet1/2 ip address interface Ethernet1/3 ip address router ospf 10 router-id log-adjacency-changes network area 0 network 55 area 0 network 55 area 0 network 55 area 0 network 55 area 0 network 55 area 0 ip route ip nat pool NAT 0 0 netmask ip nat pool vlan10 0 00 netmask ip nat pool vlan20 10 20 netmask ip nat inside source list 1 pool NAT ip nat inside source list 2 pool NAT ip nat inside source list 3 pool vlan10 overload ip nat inside source list 4 pool vlan20 overload access-list 1 permit 55 access-list 2 permit 55 access-list 3 permit any access-list 4 permit any r2;interface Loopback0 ip address ! interface Serial0/0 ip address interface Ethernet1/0 ip address half-duplex ! interface Ethernet1/1 ip address half-duplex ! interface Ethernet1/2 ip address half-duplex ! interface Ethernet1/3 ip address router ospf 10 router-id log-adjacency-changes network area 0 network 55 area 0 network 55 area 0 network 55 area 0 network 55 area 0 default-information originate ! ip http server ip route ip route ip route ! ! ip nat pool NATT 0 0 netmask ip nat pool vlan20 9 23 netmask ip nat inside source list 1 pool NATT ip nat inside source list 2 pool NATT ip nat inside source list 3 pool vlan20 overload ! access-list 1 permit 55 access-list 2 permit 55 access-list 3 permit 55 access-list 3 permit any sw1: spanning-tree uplinkfast spanning-tree backbonefast spanning-tree vlan 10 priority 8192 spanning-tree vlan 20 priority 16384 spanning-tree vlan 30 priority 8192