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PE3PE2
CE2-VPNACE1-VPNAMPLS/VPN Backbone
MPLS VPN Lab Setup
PE3PE2 CE2-VPNACE1-VPNAMPLS/VPN Backbone
192.168.1.0/24192.168.2.0/24
Lo0: 200.200.0.7 / 32 Lo0: 200.200.0.10 / 32
MPLS VPN Lab Test Output ( Successfully )
CE1-VPNA#ping CE2-VPNAType escape sequence to abort.Sending 5, 100-byte ICMP Echoes to 192.168.2.1, timeout is 2 seconds:!!!!!Success rate is 100 percent (5/5), round-trip min/avg/max = 4/7/8 ms
CE1-VPNA#sh ip route200.200.0.0/30 is subnetted, 2 subnetsO E2 200.200.0.112 [110/10] via 20.200.0.105, 16:32:02, Serial0C 200.200.0.104 is directly connected, Serial0C 192.168.1.0/24 is directly connected, Ethernet0 192.168.2.0/32 is subnetted, 1 subnetsO E2 192.168.2.1 [110/10] via 200.200.0.105, 16:28:56, Serial0
CE1-VPNA#traceroute CE2-VPNA 1 PE2 (200.200.0.105) 4 msec 4 msec 4 msec 2 P2 (200.200.0.89) 4 msec 4 msec 4 msec 3 P3 (200.200.0.82) 4 msec 4 msec 4 msec 4 PE3 (200.200.0.114) 4 msec 4 msec 8 msec 5 CE2-VPNA (200.200.0.113) 4 msec * 4 msec
PE3PE2MPLS/VPN Backbone
Lo0: 200.200.0.7 / 32 Lo0: 200.200.0.10 / 32
PE2#sh ip route
Gateway of last resort is not set 200.200.0.0/8 is variably subnetted, 12 subnets, 2 masksO 200.200.0.10/32 [110/139] via 200.200.0.89, 00:11:27, Serial0O 200.200.0.3/32 [110/129] via 200.200.0.89, 00:11:27, Serial0O 200.200.0.2/32 [110/65] via 200.200.0.89, 00:11:27, Serial0O 200.200.0.1/32 [110/75] via 200.200.0.89, 00:11:27, Serial0C 200.200.0.7/32 is directly connected, Loopback0C 200.200.0.88/30 is directly connected, Serial0O 200.200.0.80/30 [110/128] via 200.200.0.89, 00:11:27, Serial0O 200.200.0.84/30 [110/138] via 200.200.0.89, 00:11:28, Serial0O 200.200.0.72/30 [110/74] via 200.200.0.89, 00:11:28, Serial0O 200.200.0.76/30 [110/138] via 200.200.0.89, 00:11:28, Serial0O 200.200.0.64/30 [110/128] via 200.200.0.89, 00:11:28, Serial0O 200.200.0.68/30 [110/74] via 200.200.0.89, 00:11:28, Serial0
MPLS VPN Lab Test Output ( Successfully )
MEA30#sh ip route
Gateway of last resort is not set 200.200.0.0/8 is variably subnetted, 12 subnets, 2 masksC 200.200.0.10/32 is directly connected, Loopback0O 200.200.0.3/32 [110/11] via 200.200.0.85, 00:14:33, FastEthernet0/0O 200.200.0.2/32 [110/75] via 200.200.0.85, 00:14:33, FastEthernet0/0O 200.200.0.1/32 [110/75] via 200.200.0.85, 00:14:33, FastEthernet0/0O 200.200.0.7/32 [110/139] via 200.200.0.85, 00:14:33, FastEthernet0/0O 200.200.0.88/30 [110/138] via 200.200.0.85, 00:14:33, FastEthernet0/0O 200.200.0.80/30 [110/74] via 200.200.0.85, 00:14:33, FastEthernet0/0C 200.200.0.84/30 is directly connected, FastEthernet0/0O 200.200.0.72/30 [110/84] via 200.200.0.85, 00:14:33, FastEthernet0/0O 200.200.0.76/30 [110/74] via 200.200.0.85, 00:14:33, FastEthernet0/0O 200.200.0.64/30 [110/138] via 200.200.0.85, 00:14:33, FastEthernet0/0O 200.200.0.68/30 [110/84] via 200.200.0.85, 00:14:33, FastEthernet0/0
P 1
S1: 200.200.0.65 / 30
P 2
P 3
S0: 200.200.0.66 / 30
E0: 200.200.0.69 / 30
E0: 200.200.0.70 / 30
E1: 200.200.0.73 / 30
E1: 200.200.0.74 / 30
S0: 200.200.0.77 / 30
S0: 200.200.0.78 / 30
S1: 200.200.0.81 / 30
S1: 200.200.0.82 / 30
E0: 200.200.0.85/ 30
S2: 200.200.0.89 / 30
To PE2
Lo0: 200.200.0.1 / 32
Lo0: 200.200.0.2 / 32
Lo0: 200.200.0.3 / 32
MPLS VPN CORE Routers
To PE3
P 1
S1:200.200.0.65 / 30
P 2
P 3
S0: 200.200.0.66 / 30
E0: 200.200.0.69 / 30
E0: 200.200.0.70 / 30
E1: 200.200.0.73 / 30
E1: 200.200.0.74 / 30
S0: 200.200.0.77 / 30
S0: 200.200.0.78 / 30
S1:200.200.0.81 / 30
S1: 200.200.0.82 / 30
E0: 200.200.0.85/ 30
S2: 200.200.0.89 / 30
To PE2
Lo0: 200.200.0.1 / 32
Lo0: 200.200.0.2 / 32
Lo0: 200.200.0.3 / 32
MPLS VPN CORE Routers (LDP/TDP break between P2 & P3)
No “tag-switching ip” configured at P3 Serial 1
P3#sh tag tdp discovery Local TDP Identifier: 200.200.0.3:0TDP Discovery Sources: Interfaces: Ethernet1: xmit/recv TDP Id: 200.200.0.10:0 Serial0: xmit/recv TDP Id: 200.200.0.1:0
To PE3
P2#sh tag tdp discovery Local TDP Identifier: 200.200.0.2:0TDP Discovery Sources: Interfaces: Ethernet0: xmit/recv TDP Id: 200.200.0.1:0 Ethernet1: xmit/recv TDP Id: 200.200.0.1:0 Serial0: xmit/recv TDP Id: 200.200.0.1:0 Serial1: xmit Serial2: xmit/recv TDP Id: 200.200.0.7:0
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PE3PE2 CE2-VPNACE1-VPNAMPLS/VPN Backbone
192.168.1.0/24192.168.2.0/24
Lo0: 200.200.0.7 / 32 Lo0: 200.200.0.10 / 32
MPLS VPN CORE Routers (LDP/TDP break between P2 & P3)
CE1-VPNA to CE2-VPNA Failed
CE1-VPNA#ping CE2-VPNA
Type escape sequence to abort.Sending 5, 100-byte ICMP Echoes to 192.168.2.1, timeout is 2 seconds:.....Success rate is 0 percent (0/5)
CE1-VPNA#traceroute CE2-VPNA
Type escape sequence to abort.Tracing the route to CE2-VPNA (192.168.2.1)
1 PE2 (61.6.0.105) 4 msec 4 msec 0 msec 2 * * *
3 * * *
CE1-VPNA#sh ip routeGateway of last resort is not set
200.200.0.0/30 is subnetted, 2 subnetsO E2 200.200.0.112 [110/10] via 200.200.0.105, 16:58:00, Serial0C 200.200.0.104 is directly connected, Serial0C 192.168.1.0/24 is directly connected, Ethernet0 192.168.2.0/32 is subnetted, 1 subnetsO E2 192.168.2.1 [110/10] via 200.200.0.105, 16:54:54, Serial0
XPacket drop because PE3 no reachable
P 1
S1: 200.200.0.65 / 30
P 2
P 3
S0: 200.200.0.66 / 30
E0: 200.200.0.69 / 30
E0: 200.200.0.70 / 30
E1: 200.200.0.73 / 30
E1: 200.200.0.74 / 30
S0: 200.200.0.77 / 30
S0: 200.200.0.78 / 30
S1: 200.200.0.81 / 30
S1: 200.200.0.82 / 30
E0: 200.200.0.85/ 30
S2: 200.200.0.89 / 30
To PE2
Lo0: 200.200.0.1 / 32
Lo0: 200.200.0.2 / 32
Lo0: 200.200.0.3 / 32
MPLS VPN CORE Routers (LDP/TDP break between P2 & P3)
PE2 should re-reroute vpn prefix to P1
P3#sh tag tdp discovery Local TDP Identifier: 200.200.0.3:0TDP Discovery Sources: Interfaces: Ethernet1: xmit/recv TDP Id: 200.200.0.10:0 Serial0: xmit/recv TDP Id: 200.200.0.1:0
To PE3
P2#sh tag tdp discovery Local TDP Identifier: 200.200.0.2:0TDP Discovery Sources: Interfaces: Ethernet0: xmit/recv TDP Id: 200.200.0.1:0 Ethernet1: xmit/recv TDP Id: 200.200.0.1:0 Serial0: xmit/recv TDP Id: 200.200.0.1:0 Serial1: xmit Serial2: xmit/recv TDP Id: 200.200.0.7:0
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