Eigrp as PE-CE protocol – MPLS – PEs are in different AS

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-if)#router
eigrp 100

R1(config-router)#eigrp
router-id 1.1.1.1

R1(config-router)#net
10.1.1.1 0.0.0.0

R1(config-router)#net
12.12.12.1 0.0.0.0

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)#router
eigrp 100

R2(config-router)#address-family
ipv4 vrf cust1

R2(config-router-af)#net
12.12.12.2 0.0.0.0

R2(config-router-af)#autonomous
100

R2(config-router-af)#redistribute
bgp 1

R2(config-router-af)#default-metric
1 1 1 1 1 -< Metric is mandatory

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 eigrp 100

R2(config-router-af)#exit

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)#router
eigrp 100

R4(config-router)#address-family
ipv4 vrf cust1

R4(config-router-af)#net
45.45.45.4 0.0.0.0

R4(config-router-af)#autonomous
200

R4(config-router-af)#exit

R4(config-router)#

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
eigrp 200

R4(config-router-af)#router
eigrp 100

R4(config-router)#address-family
ipv4 vrf cust1

R4(config-router-af)#redistribute
bgp 1

R4(config-router-af)#default-metric
1 1 1 1 1

R4(config-router-af)#exit

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-if)#router
eigrp 200

R5(config-router)#eigrp
router-id 5.5.5.5

R5(config-router)#net
45.45.45.5 0.0.0.0

R5(config-router)#net
5.5.5.5 0.0.0.0

R5(config-router)#net
20.1.1.1 0.0.0.0

R5(config-router)#exit

R5(config)#int fa0/0

R5(config-if)#ip add
20.1.1.1 255.255.255.0

R5(config-if)#no shut

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

D EX 5.5.5.5 [170/2560002816] via 12.12.12.2,
00:00:10, FastEthernet2/0–<<
Become external route when AS is different on remote PE.and metric is
calculated based on values configured during redistribution

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

D EX 20.1.1.0 [170/2560002816] via 12.12.12.2,
00:00:10, FastEthernet2/0

45.0.0.0/24 is subnetted, 1 subnets

D EX 45.45.45.0 [170/2560002816] via
12.12.12.2, 00:01:46, FastEthernet2/0

R2:-

R2#sh ip eigrp vrf
cust1 neighbors

EIGRP-IPv4 Neighbors
for AS(100) VRF(cust1)

H
Address
Interface       Hold Uptime
SRTT   RTO Q Seq

(sec)
(ms)       Cnt Num

0
12.12.12.1
Fa2/0
   14 02:20:05 1311 5000 0 3

R2#sh ip bgp vpnv4
all summary

BGP router identifier
2.2.2.2, local AS number 1

BGP table version is
9, main routing table version 9

8 network entries
using 1216 bytes of memory

8 path entries using
416 bytes of memory

5/5 BGP path/bestpath
attribute entries using 660 bytes of memory

5 BGP extended
community entries using 1250 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 3542 total
bytes of memory

BGP activity 8/0
prefixes, 8/0 paths, scan interval 60 secs

Neighbor
V           AS MsgRcvd
MsgSent   TblVer InQ OutQ Up/Down State/PfxRcd

4.4.4.4
4
1     104
103        9    0
0 01:27:35        3

R2#show ip bgp
summary

BGP router identifier
2.2.2.2, local AS number 1

BGP table version is
1, main routing table version 1

Neighbor
V           AS MsgRcvd
MsgSent   TblVer InQ OutQ Up/Down State/PfxRcd

4.4.4.4
4
1     104
103        1    0
0 01:27:38        0

R2#sh ip bgp vpnv4
vrf cust1 20.1.1.0/24BGP routing table entry for 100:1:20.1.1.0/24, version 8

Paths: (1 available,
best #1, table cust1)

Not advertised
to any peer

Local,
imported path from 1:1:20.1.1.0/24

4.4.4.4 (metric 3) from 4.4.4.4 (4.4.4.4)

Origin incomplete, metric 30720, localpref 100, valid, internal, best

Extended Community: RT:200:1 Cost:pre-bestpath:128:30720 0x8800:32768:0

0x8801:100:5120 0x8802:65281:25600 0x8803:65281:1500 0x8806:0:84215045

mpls labels in/out nolabel/18

R2#sh ip bgp vpnv4
vrf cust1

Network          Next
Hop            Metric
LocPrf Weight Path

Route Distinguisher:
100:1 (default for vrf cust1)

*>i5.5.5.5/32
4.4.4.4
156160    100      0 ?

*> 10.1.1.0/24
12.12.12.1
30720         32768 ?

*>
12.12.12.0/24
0.0.0.0
0         32768 ?

*>i20.1.1.0/24
4.4.4.4
30720    100      0 ?

*>i45.45.45.0/24
4.4.4.4
0    100      0 ?

R2#sh ip route vrf
cust1

5.0.0.0/32 is subnetted, 1 subnets

B
5.5.5.5 [200/156160] via 4.4.4.4, 01:30:23

10.0.0.0/24 is subnetted, 1 subnets

D
10.1.1.0 [90/30720] via 12.12.12.1, 02:23:02, 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

B
20.1.1.0 [200/30720] via 4.4.4.4, 01:30:23

45.0.0.0/24 is subnetted, 1 subnets

B
45.45.45.0 [200/0] via 4.4.4.4, 01:30:23

R2#sh 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

B
5.5.5.5 [200/156160] via 4.4.4.4, 01:30:23

10.0.0.0/24 is subnetted, 1 subnets

D
10.1.1.0 [90/30720] via 12.12.12.1, 02:23:02, 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

B
20.1.1.0 [200/30720] via 4.4.4.4, 01:30:23

45.0.0.0/24 is subnetted, 1 subnets

B
45.45.45.0 [200/0] via 4.4.4.4, 01:30:23

R2# 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

2.0.0.0/32 is subnetted, 1 subnets

C
2.2.2.2 is directly connected, Loopback0

3.0.0.0/32 is subnetted, 1 subnets

O
3.3.3.3 [110/2] via 23.23.23.3, 01:22:03, FastEthernet0/0

4.0.0.0/32 is subnetted, 1 subnets

O
4.4.4.4 [110/3] via 23.23.23.3, 01:34:12, FastEthernet0/0

23.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

C
23.23.23.0/24 is directly connected, FastEthernet0/0

L
23.23.23.2/32 is directly connected, FastEthernet0/0

34.0.0.0/24 is subnetted, 1 subnets

O
34.34.34.0 [110/2] via 23.23.23.3, 02:22:13, FastEthernet0/0

R2#sh ip ospf
neighbor

Neighbor
ID     Pri
State           Dead
Time   Address
Interface

3.3.3.3
1   FULL/BDR
00:00:33    23.23.23.3
FastEthernet0/0

R2#show mpls
forwarding-tableLocal      Outgoing
Prefix           Bytes
Label   Outgoing   Next Hop

Label
Label or Tunnel Id Switched
interface

16
Pop Label 34.34.34.0/24
0
Fa0/0      23.23.23.3

17
No Label   10.1.1.0/24[V]
3414
Fa2/0      12.12.12.1

18
No Label   12.12.12.0/24[V]
0
aggregate/cust1

19
16         4.4.4.4/32
0
Fa0/0      23.23.23.3

20
Pop Label 3.3.3.3/32
0
Fa0/0      23.23.23.3

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 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

D
5.5.5.5 [90/156160] via 45.45.45.5, 02:02:27, FastEthernet2/0

10.0.0.0/24 is subnetted, 1 subnets

B
10.1.1.0 [200/30720] via 2.2.2.2, 01:34:24

12.0.0.0/24 is subnetted, 1 subnets

B
12.12.12.0 [200/0] via 2.2.2.2, 01:34:24

20.0.0.0/24 is subnetted, 1 subnets

D
20.1.1.0 [90/30720] via 45.45.45.5, 01:56:05, 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
45.45.45.4/32 is directly connected, FastEthernet2/0

R4#show ip bgp vpnv4
vrf cust1

BGP table version is
8, 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
156160         32768 ?

*>i10.1.1.0/24
2.2.2.2
30720    100      0 ?

*>i12.12.12.0/24
2.2.2.2
0    100      0 ?

*>
20.1.1.0/24
45.45.45.5
30720         32768 ?

*>
45.45.45.0/24
0.0.0.0
0         32768 ?

R4#show ip bgp vpnv4
vrf cust1 10.1.1.0/24

BGP routing table
entry for 1:1:10.1.1.0/24, version 7

Paths: (1 available,
best #1, table cust1)

Not advertised
to any peer

Local,
imported path from 100:1:10.1.1.0/24

2.2.2.2 (metric 3) from 2.2.2.2 (2.2.2.2)

Origin incomplete, metric 30720, localpref 100, valid,
internal, best

Extended Community: RT:200:1 Cost:pre-bestpath:128:30720 0x8800:32768:0

0x8801:100:5120 0x8802:65281:25600 0x8803:65281:1500 0x8806:0:16843009

mpls labels in/out nolabel/17

R4#sh ip eigrp vrf
cust1 neighbors

EIGRP-IPv4 Neighbors
for AS(100) VRF(cust1)

H
Address
Interface       Hold Uptime
SRTT   RTO Q Seq

                     (sec)
(ms)       Cnt Num

0
45.45.45.5
Fa2/0
14 02:04:28 362 2172 0 5

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

D EX 10.1.1.0 [170/2560002816]
via 45.45.45.4, 00:23:38, FastEthernet2/0 –<< -<< Become external route when AS is
different on remote PE.and metric is calculated based on values configured
during redistribution

12.0.0.0/24 is subnetted, 1
subnets

D EX 12.12.12.0
[170/2560002816] via 45.45.45.4, 00:23:38, 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

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