PC1:-
PC1>
ip 10.1.1.10 255.255.255.0 10.1.1.1
Checking
for duplicate address...
PC1 :
10.1.1.10 255.255.255.0 gateway 10.1.1.1
R1:-
R1(config)#int
fa0/0
R1(config-if)#ip
add 10.1.1.1 255.255.255.0
R1(config-if)#no
shut
R1(config-if)#int
fa2/0
R1(config-if)#ip
add 12.12.12.1 255.255.255.0
R1(config-if)#no
shut
R1(config-if)#int
lo0
R1(config-if)#ip
add 1.1.1.1 255.255.255.255
R1(config)#router
ospf 1
R1(config-router)#
log-adjacency-changes
R1(config-router)#
network 1.1.1.1 0.0.0.0 area 0
R1(config-router)#
network 10.1.1.1 0.0.0.0 area 0
R1(config-router)#
network 12.12.12.1 0.0.0.0 area 0
R2:-
R2(config)#ip
vrf cust1
R2(config-vrf)#rd
100:1
R2(config-vrf)#route-target
200:1
R2(config-vrf)#int
fa2/0
R2(config-if)#ip
vrf for cust1
R2(config-if)#ip
add 12.12.12.2 255.255.255.0
R2(config-if)#no
shut
R2(config-if)#int
fa0/0
R2(config-if)#ip
add 23.23.23.2 255.255.255.0
R2(config-if)#mpls
ip
R2(config-if)#no
shut
R2(config-if)#int
lo0
R2(config-if)#ip
add 2.2.2.2 255.255.255.255
R2(config-if)#mpls
ldp router lo0 force
R2(config)#router
ospf 1
R2(config-router)#router-id
2.2.2.2
R2(config-router)#net
23.23.23.2 0.0.0.0 are
R2(config-router)#net
23.23.23.2 0.0.0.0 area 0
R2(config-router)#network
2.2.2.2 0.0.0.0 area 0
R2(config-if)#router
bgp 1
R2(config-router)#neighbor
4.4.4.4 remote-as 1
R2(config-router)#neighbor
4.4.4.4 update-source lo0
R2(config-router)#address-family
vpnv4
R2(config-router-af)#neighbor
4.4.4.4 activate
R2(config-router-af)#exit
R2(config-router)#address-family
ipv4 vrf cust1
R2(config-router-af)#redistribute
ospf 100 vrf cust1 metric 10 --<<
metric set here, will not be used at remote end while redistributing bgp route to
ospf
R2(config-router-af)#exit
R2(config-router)#router
ospf 100 vrf cust1
R2(config-router)#
redistribute bgp 1 subnets
R2(config-router)#
network 12.12.12.2 0.0.0.0 area 0
R2(config-router)#domain-id 2.2.2.2
R2(config)#int lo1
R2(config-if)#ip vrf for cust1
R2(config-if)#ip add 22.22.22.22
255.255.255.255
R2(config-if)#router bgp 1
R2(config-router)#address ipv4 vrf
cust1
R2(config-router-af)#net 22.22.22.22
mask 255.255.255.255 --< Need to advertise Sham link end point in BGP not in
OSPF.
R2(config-router-af)#exit
R2(config-router)#router ospf 100
vrf cust1
R2(config-router)#area 0 sham-link
22.22.22.22 44.44.44.44
R3:-
R3(config)#int
lo0
R3(config-if)#ip
add 3.3.3.3 255.255.255.255
R3(config-if)#exit
R3(config)#mpls
ldp router lo0 force
R3(config)#int
fa0/0
R3(config-if)#ip
add 23.23.23.3 255.255.255.0
R3(config-if)#mpls
ip
R3(config-if)#no
shut
R3(config-if)#int
fa1/0
R3(config-if)#ip
add 34.34.34.3 255.255.255.0
R3(config-if)#mpls
ip
R3(config-if)#no
shut
R3(config-if)#router
ospf 1
R3(config-router)#router-id
3.3.3.3
R3(config-router)#net
23.23.23.3 0.0.0.0 area 0
R3(config-router)#net
34.34.34.3 0.0.0.0 are 0
R3(config-router)#net
3.3.3.3 0.0.0.0 area 0
R3(config-router)#exit
R4:-
R4(config)#int
lo0
R4(config-if)#ip
add 4.4.4.4 255.255.255.255
R4(config-if)#int
fa1/0
R4(config-if)#ip
add 34.34.34.4 255.255.255.0
R4(config-if)#mpls
ip
R4(config-if)#no
shut
R4(config-if)#exit
R4(config)#mpls
ldp router lo0 force
R4(config)#ip
vrf cust1
R4(config-vrf)#rd
1:1
R4(config-vrf)#route-target
200:1
R4(config-vrf)#exit
R4(config)#int
fa2/0
R4(config-if)#ip
vrf for cust1
R4(config-if)#ip
add 45.45.45.4 255.255.255.0
R4(config-if)#no
shut
R4(config-if)#router
ospf 1
R4(config-router)#router-id
4.4.4.4
R4(config-router)#net
34.34.34.4 0.0.0.0 area 0
R4(config-router)#network
4.4.4.4 0.0.0.0 area 0
R4(config)#router
bgp 1
R4(config-router)#neighbor
2.2.2.2 remote-as 1
R4(config-router)#neighbor
2.2.2.2 update-source lo0
R4(config-router)#address-family
vpnv4
R4(config-router-af)#neighbor
2.2.2.2 activate
R4(config-router-af)#addres
ipv4 vrf cust1
R4(config-router-af)#
redistribute ospf 100 vrf cust1
R4(config-router-af)#exit
R4(config-router)#exit
R4(config-router-af)#router
ospf 100 vrf cust1
R4(config-router)#net
45.45.45.4 0.0.0.0 area 0
R4(config-router)#domain-id 4.4.4.4
R4(config)#int lo1
R4(config-if)#ip vrf for cust1
R4(config-if)#ip add 44.44.44.44 255.255.255.255
R4(config-if)#router bgp 1
R4(config-router)#address-family ipv4 vrf cust1
R4(config-router-af)#net 44.44.44.44 mask 255.255.255.255
R4(config-router-af)#router ospf 100 vrf cust1
R4(config-router)#area 0 sham-link 44.44.44.44
22.22.22.22
R5:-
R5(config)#int
lo0
R5(config-if)#ip
add 5.5.5.5 255.255.255.255
R5(config-if)#int
fa2/0
R5(config-if)#ip
add 45.45.45.5 255.255.255.0
R5(config-if)#no
shut
R5(config)#int
fa0/0
R5(config-if)#ip
add 20.1.1.1 255.255.255.0
R5(config-if)#no
shut
R5(config)#router
ospf 1
R5(config-router)#net
5.5.5.5 0.0.0.0 area 0
R5(config-router)#net
45.45.45.5 0.0.0.0 area 0
R5(config-router)#net
20.1.1.1 0.0.0.0 area 0
Verification:-
PC1:-
PC1>
ping 20.1.1.10
84
bytes from 20.1.1.10 icmp_seq=1 ttl=59 time=368.619 ms
84
bytes from 20.1.1.10 icmp_seq=2 ttl=59 time=347.316 ms
84
bytes from 20.1.1.10 icmp_seq=3 ttl=59 time=368.788 ms
84
bytes from 20.1.1.10 icmp_seq=4 ttl=59 time=416.798 ms
84
bytes from 20.1.1.10 icmp_seq=5 ttl=59 time=379.615 ms
PC1>
trace 20.1.1.10
trace
to 20.1.1.10, 8 hops max, press Ctrl+C to stop
1
10.1.1.1 98.128 ms 32.396 ms 38.933 ms
2
12.12.12.2 193.647 ms 120.998 ms 111.703 ms
3
23.23.23.3 309.530 ms 294.889 ms 276.499 ms
4
45.45.45.4 289.342 ms 309.988 ms 292.062 ms
5
45.45.45.5 329.599 ms 272.541 ms 341.644 ms
6
*20.1.1.10 345.620 ms (ICMP type:3, code:3, Destination port
unreachable)
R1:-
R1#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
+ -
replicated route, % - next hop override
Gateway of last resort is not set
1.0.0.0/32 is
subnetted, 1 subnets
C 1.1.1.1 is
directly connected, Loopback0
5.0.0.0/32 is
subnetted, 1 subnets
O 5.5.5.5
[110/4] via 12.12.12.2, 00:05:40, FastEthernet2/0 -<< become internal
routes.
10.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
C
10.1.1.0/24 is directly connected, FastEthernet0/0
L
10.1.1.1/32 is directly connected, FastEthernet0/0
12.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
C
12.12.12.0/24 is directly connected, FastEthernet2/0
L
12.12.12.1/32 is directly connected, FastEthernet2/0
20.0.0.0/24
is subnetted, 1 subnets
O 20.1.1.0
[110/4] via 12.12.12.2, 00:05:40, FastEthernet2/0
22.0.0.0/32
is subnetted, 1 subnets
O E2
22.22.22.22 [110/1] via 12.12.12.2, 00:07:55, FastEthernet2/0
44.0.0.0/32
is subnetted, 1 subnets
O E2
44.44.44.44 [110/1] via 12.12.12.2, 00:06:30, FastEthernet2/0
45.0.0.0/24
is subnetted, 1 subnets
O 45.45.45.0
[110/3] via 12.12.12.2, 00:05:40, FastEthernet2/0
R1#
R2:-
R2#sh ip ospf neighbor
Neighbor ID
Pri State Dead Time Address Interface
3.3.3.3
1 FULL/BDR 00:00:35 23.23.23.3 FastEthernet0/0
45.45.45.4
0 FULL/ -
- 44.44.44.44 OSPF_SL0
-<< new neighborship comes up on sham links
1.1.1.1
1 FULL/BDR 00:00:39 12.12.12.1 FastEthernet2/0
R2#sh ip bgp vpnv4 all summ
BGP router identifier 2.2.2.2, local AS number 1
BGP table version is 43, main routing table version 43
7 network entries using 1064 bytes of memory
7 path entries using 364 bytes of memory
6/6 BGP path/bestpath attribute entries using 792 bytes
of memory
5 BGP extended community entries using 184 bytes of
memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP using 2404 total bytes of memory
BGP activity 13/6 prefixes, 15/8 paths, scan interval 60
secs
Neighbor
V AS MsgRcvd
MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
4.4.4.4
4 1 199
197 43 0
0 02:47:01 4
R2#show ip bgp vpnv4 all
BGP table version is 43, local router ID is 2.2.2.2
Status codes: s suppressed, d damped, h history, * valid,
> best, i - internal,
r
RIB-failure, S Stale, m multipath, b backup-path, x best-external
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 1:1 (default for vrf cust1)
r>i5.5.5.5/32
4.4.4.4 2 100
0 ?
*> 10.1.1.0/24
12.12.12.1 10 32768 ?
*> 12.12.12.0/24
0.0.0.0 0 32768 ?
r>i20.1.1.0/24
4.4.4.4 2 100
0 ?
*> 22.22.22.22/32
0.0.0.0 0 32768 i
*>i44.44.44.44/32
4.4.4.4 0 100
0 i
r>i45.45.45.0/24
4.4.4.4 0 100
0 ?
R2#show ip route vrf cust1
Routing Table: cust1
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
+ -
replicated route, % - next hop override
Gateway of last resort is not set
5.0.0.0/32 is
subnetted, 1 subnets
O 5.5.5.5
[110/3] via 4.4.4.4, 00:07:36
10.0.0.0/24
is subnetted, 1 subnets
O 10.1.1.0
[110/2] via 12.12.12.1, 00:53:18, FastEthernet2/0
12.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
C
12.12.12.0/24 is directly connected, FastEthernet2/0
L
12.12.12.2/32 is directly connected, FastEthernet2/0
20.0.0.0/24
is subnetted, 1 subnets
O 20.1.1.0
[110/3] via 4.4.4.4, 00:07:36 --<< check the cost
22.0.0.0/32
is subnetted, 1 subnets
C
22.22.22.22 is directly connected, Loopback1
44.0.0.0/32
is subnetted, 1 subnets
B
44.44.44.44 [200/0] via 4.4.4.4, 00:08:27
45.0.0.0/24
is subnetted, 1 subnets
O 45.45.45.0 [110/2] via 4.4.4.4, 00:07:36
R2#
R2#sh ip ospf sham-links
Sham Link OSPF_SL0 to address 44.44.44.44 is up
Area 0 source address 22.22.22.22
Run as demand circuit
DoNotAge LSA allowed. Cost of using 1 State POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead 40, Wait 40,
Hello due in 00:00:04
Adjacency State FULL (Hello suppressed)
Index 2/2, retransmission queue length 0, number of retransmission 0
First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0)
Last retransmission scan length is 0, maximum is 0
Last retransmission scan time is 0 msec, maximum is 0 msec
R3:-
R3#sh
ip ospf neighbor
Neighbor
ID Pri
State Dead
Time Address
Interface
4.4.4.4
1 FULL/BDR
00:00:35 34.34.34.4
FastEthernet1/0
2.2.2.2
1 FULL/DR
00:00:31 23.23.23.2
FastEthernet0/0
R3#show
mpls ldp neighbor
Peer
LDP Ident: 4.4.4.4:0; Local LDP Ident 3.3.3.3:0
TCP connection: 4.4.4.4.21070 - 3.3.3.3.646
State: Oper; Msgs sent/rcvd: 101/102; Downstream
Up time: 01:22:35
LDP discovery sources:
FastEthernet1/0, Src IP addr: 34.34.34.4
Addresses bound to peer LDP Ident:
34.34.34.4 4.4.4.4
Peer LDP Ident: 2.2.2.2:0; Local LDP Ident 3.3.3.3:0
TCP connection: 2.2.2.2.646 - 3.3.3.3.30173
State: Oper; Msgs sent/rcvd: 102/100; Downstream
Up time: 01:22:35
LDP discovery sources:
FastEthernet0/0, Src IP addr: 23.23.23.2
Addresses bound to peer LDP Ident:
23.23.23.2 2.2.2.2
R3#show
mpls ldp discovery
Local
LDP Identifier:
3.3.3.3:0
Discovery Sources:
Interfaces:
FastEthernet0/0 (ldp): xmit/recv
LDP Id: 2.2.2.2:0
FastEthernet1/0 (ldp): xmit/recv
LDP Id: 4.4.4.4:0
R3#show
mpls forwarding-table
Local
Outgoing
Prefix Bytes
Label Outgoing Next Hop
Label
Label or Tunnel Id
Switched interface
16
Pop Label 4.4.4.4/32
14366 Fa1/0
34.34.34.4
17
Pop Label 2.2.2.2/32 15433
Fa0/0
23.23.23.2
R4:-
R4#show ip ospf neighbor
Neighbor ID
Pri State Dead Time Address Interface
3.3.3.3
1 FULL/DR 00:00:31 34.34.34.3 FastEthernet1/0
12.12.12.2
0 FULL/ -
- 22.22.22.22 OSPF_SL0
5.5.5.5
1 FULL/DR 00:00:31 45.45.45.5 FastEthernet2/0
R4#show ip bgp vpnv4 all
BGP table version is 37, local router ID is 4.4.4.4
Status codes: s suppressed, d damped, h history, * valid,
> best, i - internal,
r
RIB-failure, S Stale, m multipath, b backup-path, x best-external
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 1:1 (default for vrf cust1)
*> 5.5.5.5/32
45.45.45.5 2 32768 ?
r>i10.1.1.0/24
2.2.2.2 10 100
0 ?
r>i12.12.12.0/24
2.2.2.2 0 100
0 ?
*> 20.1.1.0/24
45.45.45.5 2 32768 ?
*>i22.22.22.22/32
2.2.2.2 0 100
0 i
*> 44.44.44.44/32
0.0.0.0 0 32768 i
*> 45.45.45.0/24
0.0.0.0 0 32768 ?
R4#show ip bgp vpnv4 all
10.1.1.10/24
BGP routing table entry for 1:1:10.1.1.0/24, version 36
Paths: (1 available, best #1, table cust1,
RIB-failure(17))
Not advertised to
any peer
Local
2.2.2.2 (metric
3) from 2.2.2.2 (2.2.2.2)
Origin
incomplete, metric 10, localpref 100, valid, internal, best
Extended
Community: RT:100:1 OSPF DOMAIN ID:0x0005:0x020202020200
OSPF
RT:0.0.0.0:2:0 OSPF ROUTER ID:12.12.12.2:0
mpls labels
in/out nolabel/19
R4#show ip route vrf cust1
Routing Table: cust1
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
+ -
replicated route, % - next hop override
Gateway of last resort is not set
5.0.0.0/32 is
subnetted, 1 subnets
O 5.5.5.5
[110/2] via 45.45.45.5, 00:25:27, FastEthernet2/0
10.0.0.0/24
is subnetted, 1 subnets
O 10.1.1.0
[110/3] via 2.2.2.2, 00:09:03
12.0.0.0/24
is subnetted, 1 subnets
O 12.12.12.0
[110/2] via 2.2.2.2, 00:09:03
20.0.0.0/24
is subnetted, 1 subnets
O 20.1.1.0
[110/2] via 45.45.45.5, 00:25:27, FastEthernet2/0
22.0.0.0/32
is subnetted, 1 subnets
B
22.22.22.22 [200/0] via 2.2.2.2, 00:11:19
44.0.0.0/32
is subnetted, 1 subnets
C
44.44.44.44 is directly connected, Loopback1
45.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
C 45.45.45.0/24
is directly connected, FastEthernet2/0
L
45.45.45.4/32 is directly connected, FastEthernet2/0
R5:-
R5#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
+ -
replicated route, % - next hop override
Gateway of last resort is not set
5.0.0.0/32 is
subnetted, 1 subnets
C 5.5.5.5 is
directly connected, Loopback0
10.0.0.0/24
is subnetted, 1 subnets
O 10.1.1.0
[110/4] via 45.45.45.4, 00:10:00, FastEthernet2/0
12.0.0.0/24
is subnetted, 1 subnets
O 12.12.12.0
[110/3] via 45.45.45.4, 00:10:00, FastEthernet2/0
20.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
C
20.1.1.0/24 is directly connected, FastEthernet0/0
L
20.1.1.1/32 is directly connected, FastEthernet0/0
22.0.0.0/32
is subnetted, 1 subnets
O E2 22.22.22.22
[110/1] via 45.45.45.4, 00:12:25, FastEthernet2/0
44.0.0.0/32
is subnetted, 1 subnets
O E2
44.44.44.44 [110/1] via 45.45.45.4, 00:11:00, FastEthernet2/0
45.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
C
45.45.45.0/24 is directly connected, FastEthernet2/0
L
45.45.45.5/32 is directly connected, FastEthernet2/0
R5#
