Topology:
Use configuration from L3VPN task #9 as initial configuration for this task.
Routers R9 and R10 are added to the topology.
Requirements:
AS22 will be providing L3VPN MPLS service to Customer A, represented by routers R9 and R10.
Use networks 22.0.19/24 and 22.0.107/24 for links between AS22 and Customer A CE routers.
1. Customer A is not running any IGP. Use static routes to provide connectivity between sites R9 and R10.
2. Update the network configuration to provide the service to Customer A.
Solution:
Highlight the text below to reveal the solution.
This task requires understanding of CSC configuration for Carrier that provides MPLS VPN services.
The difference from the previous task, is that Customer Carrier runs IGP and LDP, and Customer Carrier PE routers exchange VPNv4 BGP address-family prefixes directly or via route-reflectors.
!
vrf definition CUST_A
rd 100:100
route-target export 100:100
route-target import 100:100
!
address-family ipv4
exit-address-family
!
!
interface Ethernet1/0
vrf forwarding CUST_A
ip address 22.0.19.1 255.255.255.0
!
This task requires understanding of CSC configuration for Carrier that provides MPLS VPN services.
The difference from the previous task, is that Customer Carrier runs IGP and LDP, and Customer Carrier PE routers exchange VPNv4 BGP address-family prefixes directly or via route-reflectors.
R1:
!
vrf definition CUST_A
rd 100:100
route-target export 100:100
route-target import 100:100
!
address-family ipv4
exit-address-family
!
!
interface Ethernet1/0
vrf forwarding CUST_A
ip address 22.0.19.1 255.255.255.0
!
router ospf 1
mpls ldp autoconfig
router-id 22.0.1.1
network 0.0.0.0 255.255.255.255 area 0
!
router bgp 22
bgp log-neighbor-changes
no bgp default ipv4-unicast
neighbor 22.0.2.2 remote-as 22
neighbor 22.0.2.2 update-source Loopback0
neighbor 22.0.7.7 remote-as 22
neighbor 22.0.7.7 update-source Loopback0
!
address-family ipv4
neighbor 22.0.2.2 activate
neighbor 22.0.7.7 activate
exit-address-family
!
address-family vpnv4
neighbor 22.0.7.7 activate
neighbor 22.0.7.7 send-community both
exit-address-family
!
address-family ipv4 vrf CUST_A
redistribute connected
redistribute static
exit-address-family
!
!
ip route vrf CUST_A 10.10.9.0 255.255.255.0 22.0.19.9
!
!
R2:
!
router ospf 1
mpls ldp autoconfig
router-id 22.0.2.2
redistribute bgp 22 subnets
passive-interface Ethernet1/0
network 0.0.0.0 255.255.255.255 area 0
!
R4:
!
mpls ldp
interface GigabitEthernet0/0/0/0
!
!
R7:
!
vrf definition CUST_A
rd 100:100
route-target export 100:100
route-target import 100:100
!
address-family ipv4
exit-address-family
!
interface Ethernet1/1
vrf forwarding CUST_A
ip address 22.0.107.7 255.255.255.0
!
!
router ospf 1
mpls ldp autoconfig
router-id 22.0.7.7
passive-interface Ethernet1/0
network 0.0.0.0 255.255.255.255 area 0
!
router bgp 22
bgp router-id 22.0.7.7
bgp log-neighbor-changes
no bgp default ipv4-unicast
neighbor 8.0.78.8 remote-as 8
neighbor 22.0.1.1 remote-as 22
neighbor 22.0.1.1 update-source Loopback0
neighbor 22.0.2.2 remote-as 22
neighbor 22.0.2.2 update-source Loopback0
neighbor 22.0.4.4 remote-as 22
neighbor 22.0.4.4 update-source Loopback0
!
address-family ipv4
network 22.0.0.0 mask 255.255.0.0
neighbor 8.0.78.8 activate
neighbor 22.0.1.1 activate
neighbor 22.0.2.2 activate
neighbor 22.0.2.2 next-hop-self
neighbor 22.0.4.4 activate
neighbor 22.0.4.4 next-hop-self
exit-address-family
!
address-family vpnv4
neighbor 22.0.1.1 activate
neighbor 22.0.1.1 send-community both
exit-address-family
!
address-family ipv4 vrf CUST_A
redistribute connected
redistribute static
exit-address-family
!
ip route vrf CUST_A 10.10.10.0 255.255.255.0 22.0.107.10
!
R9:
!
interface Loopback0
ip address 10.10.9.9 255.255.255.255
!
interface Ethernet0/0
ip address 22.0.19.9 255.255.255.0
!
ip route 0.0.0.0 0.0.0.0 22.0.19.1
R10:
!
interface Loopback0
ip address 10.10.10.10 255.255.255.255
!
interface Ethernet0/0
ip address 22.0.107.10 255.255.255.0
!
ip route 0.0.0.0 0.0.0.0 22.0.107.7
!
Verification:
R9# traceroute 10.10.10.10 source 10.10.9.9
Type escape sequence to abort.
Tracing the route to 10.10.10.10
VRF info: (vrf in name/id, vrf out name/id)
1 22.0.19.1 1 msec 0 msec 0 msec
2 22.0.12.2 [MPLS: Labels 19/22 Exp 0] 7 msec 6 msec 6 msec
3 21.0.23.3 [MPLS: Labels 24011/22 Exp 0] 9 msec 7 msec 7 msec
4 21.0.35.5 [MPLS: Labels 16/19/22 Exp 0] 6 msec 8 msec 7 msec
5 21.0.56.6 [MPLS: Labels 19/22 Exp 0] 8 msec 8 msec 8 msec
6 21.0.46.4 [MPLS: Labels 24007/22 Exp 0] 6 msec 8 msec 7 msec
7 22.0.107.7 [MPLS: Label 22 Exp 0] 7 msec 9 msec 7 msec
8 22.0.107.10 7 msec 7 msec 8 msec
R10# traceroute 10.10.9.9 source 10.10.10.10
Type escape sequence to abort.
Tracing the route to 10.10.9.9
VRF info: (vrf in name/id, vrf out name/id)
1 22.0.107.7 1 msec 0 msec 0 msec
2 22.0.47.4 [MPLS: Labels 24003/23 Exp 0] 7 msec 6 msec 6 msec
3 21.0.46.6 [MPLS: Labels 28/23 Exp 0] 6 msec 6 msec 8 msec
4 21.0.56.5 [MPLS: Labels 17/24006/23 Exp 0] 6 msec 7 msec 7 msec
5 21.0.35.3 [MPLS: Labels 24006/23 Exp 0] 7 msec 7 msec 7 msec
6 21.0.23.2 [MPLS: Labels 24/23 Exp 0] 7 msec 7 msec 8 msec
7 22.0.19.1 [MPLS: Label 23 Exp 0] 6 msec 7 msec 7 msec
8 22.0.19.9 9 msec 8 msec 7 msec
R10#sh ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is 22.0.107.7 to network 0.0.0.0
S* 0.0.0.0/0 [1/0] via 22.0.107.7
10.0.0.0/32 is subnetted, 1 subnets
C 10.10.10.10 is directly connected, Loopback0
22.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 22.0.107.0/24 is directly connected, Ethernet0/0
L 22.0.107.10/32 is directly connected, Ethernet0/0
R1#sh ip route vrf CUST_A
Routing Table: CUST_A
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
10.0.0.0/24 is subnetted, 2 subnets
S 10.10.9.0 [1/0] via 22.0.19.9
B 10.10.10.0 [200/0] via 22.0.7.7, 00:46:52
22.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
C 22.0.19.0/24 is directly connected, Ethernet1/0
L 22.0.19.1/32 is directly connected, Ethernet1/0
B 22.0.107.0/24 [200/0] via 22.0.7.7, 00:49:17
R1#show mpls forwarding-table
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
16 Pop Label 21.0.23.0/24 0 Et0/0 22.0.12.2
17 Pop Label 22.0.2.2/32 0 Et0/0 22.0.12.2
18 18 22.0.4.4/32 0 Et0/0 22.0.12.2
19 19 22.0.7.7/32 0 Et0/0 22.0.12.2
20 16 22.0.47.0/24 0 Et0/0 22.0.12.2
22 No Label 22.0.19.0/24[V] 3012 aggregate/CUST_A
23 No Label 10.10.9.0/24[V] 6426 Et1/0 22.0.19.9
R1#sh ip cef vrf CUST_A 10.10.10.10
10.10.10.0/24
nexthop 22.0.12.2 Ethernet0/0 label 19 22
R1#sh ip cef vrf CUST_A 10.10.10.10 det
R1#sh ip cef vrf CUST_A 10.10.10.10 detail
10.10.10.0/24, epoch 0, flags rib defined all labels
recursive via 22.0.7.7 label 22
nexthop 22.0.12.2 Ethernet0/0 label 19
R2# show mpls forwarding-table
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
16 24012 22.0.47.0/24 0 Et1/0 21.0.23.3
17 No Label 11.0.0.0/8 0 Et1/0 21.0.23.3
18 24010 22.0.4.4/32 0 Et1/0 21.0.23.3
19 24011 22.0.7.7/32 30754 Et1/0 21.0.23.3
20 No Label 33.0.0.0/8 0 Et1/0 21.0.23.3
21 No Label 8.0.0.0/16 0 Et1/0 21.0.23.3
22 Pop Label 21.0.23.3/32 0 Et1/0 21.0.23.3
23 No Label 55.0.0.0/8 0 Et1/0 21.0.23.3
24 Pop Label 22.0.1.1/32 33580 Et0/0 22.0.12.1
30 No Label 22.0.0.0/16 0 Et1/0 21.0.23.3
R7# show mpls forwarding-table
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
16 24003 22.0.1.1/32 0 Et0/0 22.0.47.4
17 24004 22.0.2.2/32 0 Et0/0 22.0.47.4
18 Pop Label 22.0.4.4/32 0 Et0/0 22.0.47.4
19 24005 22.0.12.0/24 0 Et0/0 22.0.47.4
21 No Label 22.0.107.0/24[V] 3102 aggregate/CUST_A
22 No Label 10.10.10.0/24[V] 10614 Et1/1 22.0.107.10
