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e-bgp routes not advertising to ospf after redistribute

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R Manjunatha
Level 3
Level 3

‎05-17-2023 06:38 AM - last edited on ‎05-26-2023 02:45 AM by Community Manager

HI,

After advertising to e-bgp on my local LAN networks, I am not getting the following routes. I redistributed between OSPF to BGP Router MPLS-1. I do not find any routes from other end routers CE-UK. Please find all the router configurations below.

network 10.10.1.0
network 10.10.1.16
network 10.10.1.32

India-CE-MPLS#sh run | se bgp
router bgp 65002
bgp log-neighbor-changes
no synchronization
neighbor 172.16.12.1 remote-as 65004
network 10.10.1.0 mask 255.255.255.240
network 10.10.1.16 mask 255.255.255.240
network 10.10.1.32 mask 255.255.255.240

India-CE-MPLS#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, E - EGP
i - IS-IS, 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

Gateway of last resort is 10.10.10.14 to network 0.0.0.0

10.0.0.0/8 is variably subnetted, 9 subnets, 3 masks
D 10.10.1.0/28 [90/25628160] via 10.10.10.14, 02:27:30, GigabitEthernet0/0
[90/25628160] via 10.10.10.9, 02:27:30, GigabitEthernet0/1
D 10.10.1.16/28 [90/25628160] via 10.10.10.14, 02:27:30, GigabitEthernet0/0
[90/25628160] via 10.10.10.9, 02:27:30, GigabitEthernet0/1
D 10.10.1.32/28 [90/25628160] via 10.10.10.14, 02:27:30, GigabitEthernet0/0
[90/25628160] via 10.10.10.9, 02:27:30, GigabitEthernet0/1
D 10.10.10.0/30 [90/30720] via 10.10.10.14, 02:27:30, GigabitEthernet0/0
D 10.10.10.4/30 [90/30720] via 10.10.10.9, 02:27:30, GigabitEthernet0/1
C 10.10.10.8/30 is directly connected, GigabitEthernet0/1
L 10.10.10.10/32 is directly connected, GigabitEthernet0/1
C 10.10.10.12/30 is directly connected, GigabitEthernet0/0
L 10.10.10.13/32 is directly connected, GigabitEthernet0/0
172.16.0.0/16 is variably subnetted, 9 subnets, 2 masks
B 172.16.1.0/24 [20/0] via 172.16.12.1, 00:00:00
B 172.16.3.0/24 [20/3] via 172.16.12.1, 00:00:00
B 172.16.4.0/24 [20/3] via 172.16.12.1, 00:00:00
B 172.16.5.0/24 [20/3] via 172.16.12.1, 00:00:00
B 172.16.7.0/24 [20/2] via 172.16.12.1, 00:00:00
B 172.16.8.0/24 [20/2] via 172.16.12.1, 00:00:00
B 172.16.10.0/24 [20/4] via 172.16.12.1, 00:00:00
C 172.16.12.0/24 is directly connected, GigabitEthernet0/2
L 172.16.12.2/32 is directly connected, GigabitEthernet0/2
201.0.0.0/30 is subnetted, 1 subnets
D 201.0.0.4/30 [90/30976] via 10.10.10.14, 02:27:30, GigabitEthernet0/0
[90/30976] via 10.10.10.9, 02:27:30, GigabitEthernet0/1
D* 0.0.0.0/0 [90/30976] via 10.10.10.14, 02:27:30, GigabitEthernet0/0
[90/30976] via 10.10.10.9, 02:27:30, GigabitEthernet0/1

MPLS-1#
router ospf 1
log-adjacency-changes
redistribute bgp 65004 metric 1
network 172.16.1.0 0.0.0.255 area 0
network 172.16.12.0 0.0.0.255 area 0
!
router bgp 65004
bgp log-neighbor-changes
no synchronization
neighbor 172.16.12.2 remote-as 65002
network 172.16.1.0 mask 255.255.255.0
network 172.16.12.0 mask 255.255.255.0
redistribute ospf 1
redistribute static
redistribute connected
MPLS-1#sh ip rou
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, E - EGP
i - IS-IS, 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

Gateway of last resort is not set

10.0.0.0/28 is subnetted, 3 subnets
B 10.10.1.0/28 [20/0] via 172.16.12.2, 00:00:00
B 10.10.1.16/28 [20/0] via 172.16.12.2, 00:00:00
B 10.10.1.32/28 [20/0] via 172.16.12.2, 00:00:00
172.16.0.0/16 is variably subnetted, 10 subnets, 2 masks
C 172.16.1.0/24 is directly connected, GigabitEthernet0/2
L 172.16.1.1/32 is directly connected, GigabitEthernet0/2
O 172.16.3.0/24 [110/3] via 172.16.1.2, 02:29:04, GigabitEthernet0/2
O 172.16.4.0/24 [110/3] via 172.16.1.2, 02:29:04, GigabitEthernet0/2
O 172.16.5.0/24 [110/3] via 172.16.1.2, 02:29:04, GigabitEthernet0/2
O 172.16.7.0/24 [110/2] via 172.16.1.2, 02:29:04, GigabitEthernet0/2
O 172.16.8.0/24 [110/2] via 172.16.1.2, 02:29:04, GigabitEthernet0/2
O 172.16.10.0/24 [110/4] via 172.16.1.2, 02:21:39, GigabitEthernet0/2
C 172.16.12.0/24 is directly connected, GigabitEthernet0/0
L 172.16.12.1/32 is directly connected, GigabitEthernet0/0
O E2 192.168.10.0/24 [110/20] via 172.16.1.2, 01:26:57, GigabitEthernet0/2

MPLS-ISP-1#sh run | se osp
router ospf 1
log-adjacency-changes
network 172.16.1.0 0.0.0.255 area 0
network 172.16.7.0 0.0.0.255 area 0
network 172.16.8.0 0.0.0.255 area 0
ISP-MPLS-R1#sh ip rou
ISP-MPLS-R1#sh ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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

Gateway of last resort is not set

172.16.0.0/24 is subnetted, 8 subnets
C 172.16.1.0 is directly connected, FastEthernet0/4
O 172.16.3.0 [110/2] via 172.16.8.2, 02:29:40, FastEthernet0/7
O 172.16.4.0 [110/2] via 172.16.8.2, 02:29:40, FastEthernet0/7
O 172.16.5.0 [110/2] via 172.16.8.2, 02:29:40, FastEthernet0/7
C 172.16.7.0 is directly connected, FastEthernet0/5
C 172.16.8.0 is directly connected, FastEthernet0/7
O 172.16.10.0 [110/3] via 172.16.8.2, 02:22:05, FastEthernet0/7
O 172.16.12.0 [110/2] via 172.16.1.1, 02:22:48, FastEthernet0/4
O E2 192.168.10.0/24 [110/20] via 172.16.8.2, 01:27:23, FastEthernet0/7

-MPLS-ISP-2#sh run | se ospf
router ospf 1
log-adjacency-changes
network 172.16.3.0 0.0.0.255 area 0
network 172.16.4.0 0.0.0.255 area 0
network 172.16.5.0 0.0.0.255 area 0
network 172.16.8.0 0.0.0.255 area 0
ISP-MPLS-R2#sh ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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

Gateway of last resort is not set

172.16.0.0/24 is subnetted, 8 subnets
O 172.16.1.0 [110/2] via 172.16.8.1, 02:30:08, FastEthernet0/1
C 172.16.3.0 is directly connected, FastEthernet0/3
C 172.16.4.0 is directly connected, FastEthernet0/4
C 172.16.5.0 is directly connected, FastEthernet0/2
O 172.16.7.0 [110/2] via 172.16.8.1, 02:29:58, FastEthernet0/1
C 172.16.8.0 is directly connected, FastEthernet0/1
O 172.16.10.0 [110/2] via 172.16.5.1, 02:22:33, FastEthernet0/2
O 172.16.12.0 [110/3] via 172.16.8.1, 02:23:16, FastEthernet0/1
O E2 192.168.10.0/24 [110/20] via 172.16.5.1, 01:27:51, FastEthernet0/2

MPLS-2 #sh run | se ospf
router ospf 1
log-adjacency-changes
redistribute bgp 65003 subnets
network 172.16.5.0 0.0.0.255 area 0
network 172.16.10.0 0.0.0.255 area 0
redistribute ospf 1
ISP-MPLS-R1#sh run | se bgp
redistribute bgp 65003 subnets
router bgp 65003
bgp log-neighbor-changes
no synchronization
neighbor 172.16.10.1 remote-as 65001
network 172.16.5.0 mask 255.255.255.0
network 172.16.10.0 mask 255.255.255.0
redistribute ospf 1
redistribute static
redistribute connected
ISP-MPLS-R1#sh ip rou
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, E - EGP
i - IS-IS, 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

Gateway of last resort is not set

172.16.0.0/16 is variably subnetted, 10 subnets, 2 masks
O 172.16.1.0/24 [110/3] via 172.16.5.2, 02:30:36, GigabitEthernet0/1
O 172.16.3.0/24 [110/2] via 172.16.5.2, 02:30:36, GigabitEthernet0/1
O 172.16.4.0/24 [110/2] via 172.16.5.2, 02:30:36, GigabitEthernet0/1
C 172.16.5.0/24 is directly connected, GigabitEthernet0/1
L 172.16.5.1/32 is directly connected, GigabitEthernet0/1
O 172.16.7.0/24 [110/3] via 172.16.5.2, 02:30:26, GigabitEthernet0/1
O 172.16.8.0/24 [110/2] via 172.16.5.2, 02:30:36, GigabitEthernet0/1
C 172.16.10.0/24 is directly connected, GigabitEthernet0/0
L 172.16.10.2/32 is directly connected, GigabitEthernet0/0
O 172.16.12.0/24 [110/4] via 172.16.5.2, 02:23:49, GigabitEthernet0/1
B 192.168.10.0/24 [20/0] via 172.16.10.1, 00:00:00

UK-CE-R1#sh run | se bgp
router bgp 65001
bgp log-neighbor-changes
no synchronization
neighbor 172.16.10.2 remote-as 65003
network 192.168.10.0
UK-CE-R1#sh ip rou
UK-CE-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, E - EGP
i - IS-IS, 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

Gateway of last resort is 10.70.70.41 to network 0.0.0.0

10.0.0.0/8 is variably subnetted, 24 subnets, 3 masks
D 10.50.1.0/28 [90/25630720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
[90/25630720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D 10.50.1.16/28 [90/25630720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
[90/25630720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D 10.50.1.32/28 [90/25630720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
[90/25630720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D 10.50.1.48/28 [90/25630720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
[90/25630720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D 10.60.1.32/28 [90/25630720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
[90/25630720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D 10.60.1.48/28 [90/25630720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
[90/25630720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D 10.70.70.0/30 [90/30720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D 10.70.70.4/30 [90/30720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
D 10.70.70.8/30 [90/30720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D 10.70.70.12/30 [90/30720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
D 10.70.70.16/30 [90/30720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D 10.70.70.20/30 [90/30720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
D 10.70.70.24/30 [90/30720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D 10.70.70.28/30 [90/30720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
C 10.70.70.32/30 is directly connected, GigabitEthernet0/0
L 10.70.70.34/32 is directly connected, GigabitEthernet0/0
C 10.70.70.40/30 is directly connected, GigabitEthernet0/1
L 10.70.70.42/32 is directly connected, GigabitEthernet0/1
D 10.70.70.44/30 [90/30720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
D 10.70.70.48/30 [90/30720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D 10.70.70.56/30 [90/30720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
D 10.70.70.60/30 [90/30720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
D 10.70.70.64/30 [90/30720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D 10.70.70.68/30 [90/30720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
172.16.0.0/16 is variably subnetted, 9 subnets, 2 masks
B 172.16.1.0/24 [20/3] via 172.16.10.2, 00:00:00
B 172.16.3.0/24 [20/2] via 172.16.10.2, 00:00:00
B 172.16.4.0/24 [20/2] via 172.16.10.2, 00:00:00
B 172.16.5.0/24 [20/0] via 172.16.10.2, 00:00:00
B 172.16.7.0/24 [20/3] via 172.16.10.2, 00:00:00
B 172.16.8.0/24 [20/2] via 172.16.10.2, 00:00:00
C 172.16.10.0/24 is directly connected, GigabitEthernet0/2
L 172.16.10.1/32 is directly connected, GigabitEthernet0/2
B 172.16.12.0/24 [20/4] via 172.16.10.2, 00:00:00
D 192.168.10.0/24 [90/25630720] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
[90/25630720] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
201.0.0.0/30 is subnetted, 1 subnets
D 201.0.0.20/30 [90/30976] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
[90/30976] via 10.70.70.33, 02:32:18, GigabitEthernet0/0
D* 0.0.0.0/0 [90/30976] via 10.70.70.41, 02:32:18, GigabitEthernet0/1
[90/30976] via 10.70.70.33, 02:32:18, GigabitEthernet0/0


 

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3 Accepted Solutions

Accepted Solutions

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Harold Ritter
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In response to Harold Ritter

‎05-17-2023 01:42 PM - last edited on ‎05-26-2023 02:59 AM by Community Manager

Hi @R Manjunatha ,

After making the following changes on India-CE-MPLS, I could

ping 10.10.1.3 from both ISP-MPLS-R1 and UK-CE-R1.
India-CE-MPLS:

router eigrp 10

redistribute bgp 65002 metric 10000 1 255 1 1500

no network 0.0.0.0

network 10.0.0.0

 

Regards,

Regards,
Harold Ritter, CCIE #4168 (EI, SP)

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Harold Ritter
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In response to Harold Ritter

‎05-27-2023 09:14 AM

Hi @R Manjunatha ,

I had forgotten to change the ASN to AS65011 on WAN-R. Here's the new file.

Regards,

Regards,
Harold Ritter, CCIE #4168 (EI, SP)

View solution in original post

IT infrastrusture design3.pkt.zip
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Harold Ritter
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In response to R Manjunatha

‎06-26-2023 06:50 PM - edited ‎06-26-2023 06:51 PM

Hi @R Manjunatha ,

Sorry for the delay. I was away from the office for a while. 

The reason you are not able to ping 192.168.10.1 and 10.30.100.1 from SW-D1 is that the ping will use FA0/6 as the source address to go to these destinations, but this address is not advertised to other sites. Normally in a real network, you would use the "ping x.x.x.x source" to specify one of the vlan (50 to 100) as the source of the ping, as these prefixes are advertised. But packet tracer does allow to specify the source on the ping command. 

The other option is to advertise fa0/6 prefix to the remote sites via BGP, as follow:

India-CE-MPLS:

router bgp 65002

network 10.10.10.12 mask 255.255.255.252

You should then be able to ping.

SW-D1#ping 192.168.10.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.10.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/0 ms

SW-D1#ping 10.30.100.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.30.100.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/1 ms

Regards,

Regards,
Harold Ritter, CCIE #4168 (EI, SP)

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Harold Ritter
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‎05-17-2023 06:54 AM - last edited on ‎05-26-2023 02:46 AM by Community Manager

Hi @R Manjunatha ,

In IOS, ospf only redistributes the classful networks by default. You need to add the following keyword on MPLS-1 to change that behavior.

router ospf 1
redistribute bgp 65004 metric 1 subnets

Regards,

 

Regards,
Harold Ritter, CCIE #4168 (EI, SP)

Go to solution
R Manjunatha
Level 3
Level 3
In response to Harold Ritter

‎05-17-2023 08:44 AM - last edited on ‎05-26-2023 02:51 AM by Community Manager

Yes...now I can able to see the routes till MPLS-2 and I could not able to ping the 10.10.1.3/28 host, I can able to ping from MPLS-1, and also there are no routes from the CE-UK router.

 

MPLS-2#sh ip rou
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, E - EGP
i - IS-IS, 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

Gateway of last resort is not set

10.0.0.0/28 is subnetted, 3 subnets
O E2 10.10.1.0/28 [110/1] via 172.16.5.2, 00:33:10, GigabitEthernet0/1
O E2 10.10.1.16/28 [110/1] via 172.16.5.2, 00:33:10, GigabitEthernet0/1
O E2 10.10.1.32/28 [110/1] via 172.16.5.2, 00:33:10, GigabitEthernet0/1
172.16.0.0/16 is variably subnetted, 10 subnets, 2 masks
O 172.16.1.0/24 [110/3] via 172.16.5.2, 03:29:20, GigabitEthernet0/1
O 172.16.3.0/24 [110/2] via 172.16.5.2, 03:29:20, GigabitEthernet0/1
O 172.16.4.0/24 [110/2] via 172.16.5.2, 03:29:20, GigabitEthernet0/1
C 172.16.5.0/24 is directly connected, GigabitEthernet0/1
L 172.16.5.1/32 is directly connected, GigabitEthernet0/1
O 172.16.7.0/24 [110/3] via 172.16.5.2, 03:29:10, GigabitEthernet0/1
O 172.16.8.0/24 [110/2] via 172.16.5.2, 03:29:20, GigabitEthernet0/1
C 172.16.10.0/24 is directly connected, GigabitEthernet0/0
L 172.16.10.2/32 is directly connected, GigabitEthernet0/0
O 172.16.12.0/24 [110/4] via 172.16.5.2, 03:22:33, GigabitEthernet0/1
B 192.168.10.0/24 [20/0] via 172.16.10.1, 00:00:00

ISP-MPLS-R1#ping 10.10.1.3

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.1.3, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

MPLS-1(config-router)#do sh ip rou

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, E - EGP

       i - IS-IS, 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




Gateway of last resort is not set




     10.0.0.0/28 is subnetted, 3 subnets

B       10.10.1.0/28 [20/0] via 172.16.12.2, 00:00:00

B       10.10.1.16/28 [20/0] via 172.16.12.2, 00:00:00

B       10.10.1.32/28 [20/0] via 172.16.12.2, 00:00:00

     172.16.0.0/16 is variably subnetted, 10 subnets, 2 masks

C       172.16.1.0/24 is directly connected, GigabitEthernet0/2

L       172.16.1.1/32 is directly connected, GigabitEthernet0/2

O       172.16.3.0/24 [110/3] via 172.16.1.2, 03:28:35, GigabitEthernet0/2

O       172.16.4.0/24 [110/3] via 172.16.1.2, 03:28:35, GigabitEthernet0/2

O       172.16.5.0/24 [110/3] via 172.16.1.2, 03:28:35, GigabitEthernet0/2

O       172.16.7.0/24 [110/2] via 172.16.1.2, 03:28:35, GigabitEthernet0/2

O       172.16.8.0/24 [110/2] via 172.16.1.2, 03:28:35, GigabitEthernet0/2

O       172.16.10.0/24 [110/4] via 172.16.1.2, 03:21:10, GigabitEthernet0/2

C       172.16.12.0/24 is directly connected, GigabitEthernet0/0

L       172.16.12.1/32 is directly connected, GigabitEthernet0/0

O E2 192.168.10.0/24 [110/1] via 172.16.1.2, 00:00:15, GigabitEthernet0/2










MPLS-1(config-router)#do ping 10.10.1.3




Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.10.1.3, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 0/2/13 ms


UK-CE-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, E - EGP
i - IS-IS, 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

Gateway of last resort is 10.70.70.33 to network 0.0.0.0

10.0.0.0/8 is variably subnetted, 24 subnets, 3 masks
D 10.50.1.0/28 [90/25630720] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
[90/25630720] via 10.70.70.41, 00:02:02, GigabitEthernet0/1
D 10.50.1.16/28 [90/25630720] via 10.70.70.33, 00:02:06, GigabitEthernet0/0
[90/25630720] via 10.70.70.41, 00:02:02, GigabitEthernet0/1
D 10.50.1.32/28 [90/25630720] via 10.70.70.33, 00:02:04, GigabitEthernet0/0
[90/25630720] via 10.70.70.41, 00:02:02, GigabitEthernet0/1
D 10.50.1.48/28 [90/25630720] via 10.70.70.33, 00:02:04, GigabitEthernet0/0
[90/25630720] via 10.70.70.41, 00:02:02, GigabitEthernet0/1
D 10.60.1.32/28 [90/25630720] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
[90/25630720] via 10.70.70.41, 00:02:05, GigabitEthernet0/1
D 10.60.1.48/28 [90/25630720] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
[90/25630720] via 10.70.70.41, 00:02:05, GigabitEthernet0/1
D 10.70.70.0/30 [90/30720] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
D 10.70.70.4/30 [90/30720] via 10.70.70.41, 00:02:06, GigabitEthernet0/1
D 10.70.70.8/30 [90/30720] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
D 10.70.70.12/30 [90/30720] via 10.70.70.41, 00:02:06, GigabitEthernet0/1
D 10.70.70.16/30 [90/30720] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
D 10.70.70.20/30 [90/30720] via 10.70.70.41, 00:02:06, GigabitEthernet0/1
D 10.70.70.24/30 [90/30720] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
D 10.70.70.28/30 [90/30720] via 10.70.70.41, 00:02:06, GigabitEthernet0/1
C 10.70.70.32/30 is directly connected, GigabitEthernet0/0
L 10.70.70.34/32 is directly connected, GigabitEthernet0/0
C 10.70.70.40/30 is directly connected, GigabitEthernet0/1
L 10.70.70.42/32 is directly connected, GigabitEthernet0/1
D 10.70.70.44/30 [90/30720] via 10.70.70.41, 00:02:06, GigabitEthernet0/1
D 10.70.70.48/30 [90/30720] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
D 10.70.70.56/30 [90/30720] via 10.70.70.41, 00:02:06, GigabitEthernet0/1
D 10.70.70.60/30 [90/30720] via 10.70.70.41, 00:02:06, GigabitEthernet0/1
D 10.70.70.64/30 [90/30720] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
D 10.70.70.68/30 [90/30720] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
172.16.0.0/16 is variably subnetted, 9 subnets, 2 masks
B 172.16.1.0/24 [20/3] via 172.16.10.2, 00:00:00
B 172.16.3.0/24 [20/2] via 172.16.10.2, 00:00:00
B 172.16.4.0/24 [20/2] via 172.16.10.2, 00:00:00
B 172.16.5.0/24 [20/0] via 172.16.10.2, 00:00:00
B 172.16.7.0/24 [20/3] via 172.16.10.2, 00:00:00
B 172.16.8.0/24 [20/2] via 172.16.10.2, 00:00:00
C 172.16.10.0/24 is directly connected, GigabitEthernet0/2
L 172.16.10.1/32 is directly connected, GigabitEthernet0/2
B 172.16.12.0/24 [20/4] via 172.16.10.2, 00:00:00
D 192.168.10.0/24 [90/25630720] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
[90/25630720] via 10.70.70.41, 00:02:05, GigabitEthernet0/1
201.0.0.0/30 is subnetted, 1 subnets
D 201.0.0.20/30 [90/30976] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
[90/30976] via 10.70.70.41, 00:02:06, GigabitEthernet0/1
D* 0.0.0.0/0 [90/30976] via 10.70.70.33, 00:02:07, GigabitEthernet0/0
[90/30976] via 10.70.70.41, 00:02:06, GigabitEthernet0/1
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Harold Ritter
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In response to R Manjunatha

‎05-17-2023 09:09 AM - last edited on ‎06-21-2023 02:30 AM by Community Manager

Hi @R Manjunatha ,

I am glad it solved the

redistribution

issue. There are quite a few routing protocols and

redistribution

points involved. It would help if you could provide a network

diagram/map

if you want us to help further troubleshooting.

Regards,

Regards,
Harold Ritter, CCIE #4168 (EI, SP)
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R Manjunatha
Level 3
Level 3
In response to Harold Ritter

‎05-17-2023 10:56 AM

network diagram

RManjunatha_0-1684346155370.png

 

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Harold Ritter
Spotlight
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In response to R Manjunatha

‎05-17-2023 11:11 AM - last edited on ‎05-26-2023 02:55 AM by Community Manager

Thanks for the diagram @R Manjunatha . I see this is a Packet Trace simulation. Could you please zip the

.pkt

and load the zipped file here. This will make it easier for us to see what is going on.

Regards,

Regards,
Harold Ritter, CCIE #4168 (EI, SP)
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R Manjunatha
Level 3
Level 3
In response to Harold Ritter

‎05-17-2023 11:23 AM

Hi,

attached as requested ....

IT infrastrusture design.zip
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Harold Ritter
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In response to Harold Ritter

‎05-17-2023 01:42 PM - last edited on ‎05-26-2023 02:59 AM by Community Manager

Hi @R Manjunatha ,

After making the following changes on India-CE-MPLS, I could

ping 10.10.1.3 from both ISP-MPLS-R1 and UK-CE-R1.
India-CE-MPLS:

router eigrp 10

redistribute bgp 65002 metric 10000 1 255 1 1500

no network 0.0.0.0

network 10.0.0.0

 

Regards,

Regards,
Harold Ritter, CCIE #4168 (EI, SP)

Go to solution
R Manjunatha
Level 3
Level 3
In response to Harold Ritter

‎05-17-2023 08:34 PM

Thanks for the clarification it is working. 

 

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Harold Ritter
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In response to R Manjunatha

‎05-17-2023 08:37 PM

You are very welcome @R Manjunatha and thanks for the feedback

Regards,
Harold Ritter, CCIE #4168 (EI, SP)
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R Manjunatha
Level 3
Level 3
In response to Harold Ritter

‎05-19-2023 09:57 AM

Hi,

I have one more clarification on the same topology. I have a requirement I need access from India, Singapore, Dubi, and Hong Kong from the branch office to London HQ servers that is 192.168.10.0/24 and similar US-Data center server farm 10.30.100.0/24 and 10.30.200.0/24 networks.

I advertised London HQ servers that is 192.168.10.0/24 and similar US-Data center server farm 10.30.100.0/24 and 10.30.200.0/24 networks. I am not finding any routes from CE Routers (all my branch offices) to communicate those servers.

 

 

IT infrastrusture design.zip
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Harold Ritter
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In response to R Manjunatha

‎05-21-2023 09:55 AM - last edited on ‎06-21-2023 02:32 AM by Community Manager

Hi @R Manjunatha ,

There are a few things that need to be changed for the connectivity between the branch office, the US DC and London HQ servers to happen.

1. Use AS 65011 on both UD DC Wan routers to avoid routes advertised to the WAN via BGP to be sent back to US DC via BGP.

2. On all SP WAN routers (Router11 (US DC), ISP-MPLS-R1(London HQ), MPLS-1 (India), MPLS-2 (Singapore), Router6 (Dubai) and Router9 (Hong Kong))

These routers will learn routes from US DC, London HQ and branch offices via BGP,

redistribute

them in OSPF and

redistribute

them back from OSPF to BGP at other location. The issue is that external routes are not

redistributed

by default from OSPF to BGP. You need the following command on all the above mentioned router to make sure routes from the SP Core OSPF are

redistributed

into BGP at the different locations:

router bgp xxx

redistribute ospf 1 match internal external 1

3. In all locations using eigrp, configure a specific network statement for all interfaces

(i.e. network <interface address> 0.0.0.0)

in place of the generic

network 0.0.0.0 or network 10.0.0.0

With these changes I have complete connectivity between all branch offices, network 10.30.100.0/24, 10.30.200.0/24 and 192.168.10.0/24.

Regards,

 

Regards,
Harold Ritter, CCIE #4168 (EI, SP)
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R Manjunatha
Level 3
Level 3

‎05-24-2023 01:56 AM - last edited on ‎05-26-2023 03:05 AM by Community Manager

Its grate.

Do you have that

.pkt

file where you changed the configuration, and it works fine? please attach the same.

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R Manjunatha
Level 3
Level 3
In response to R Manjunatha

‎05-27-2023 04:37 AM - last edited on ‎06-08-2023 06:34 PM by Community Manager

Hi,

I can able to see the routes from the MPLS-1 router and able to ping the London HQ server i.e 192.168.10.1, but the same route I am unable to find them in the India CE-MPLS router and similarly MPLS-1 router does not have the route of US-data center server network 10.30.100.0 /10.30.200.0.

MPLS-1#sh ip rou 192.168.10.1
Routing entry for 192.168.10.0/24
Known via "ospf 1", distance 110, metric 1, type intra area
Last update from 172.16.1.2 on GigabitEthernet0/2, 00:13:32 ago
Routing Descriptor Blocks:
* 172.16.1.2, from 172.16.10.2, 00:13:32 ago, via GigabitEthernet0/2
Route metric is 1, traffic share count is 1

MPLS-1#ping 192.168.10.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.10.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/1 ms
India-CE-MPLS#sh ip rou 192.168.10.0

% Network not in table

configuration-MPLS-1#
router ospf 1
log-adjacency-changes
redistribute bgp 65041 metric 1 subnets
network 172.16.1.0 0.0.0.255 area 0
!
router bgp 65041
bgp log-neighbor-changes
no synchronization
neighbor 172.16.12.2 remote-as 65040
network 172.16.12.0 mask 255.255.255.0
network 172.16.1.0 mask 255.255.255.

0
redistribute ospf 1 match internal external 1
redistribute static
redistribute connected

This is wan router 11 (us-data center side )

Router#sh ip rou
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, E - EGP
i - IS-IS, 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

Gateway of last resort is not set

10.0.0.0/8 is variably subnetted, 22 subnets, 2 masks
O E2 10.10.1.0/28 [110/1] via 172.16.7.2, 00:02:30, GigabitEthernet0/0
O E2 10.10.1.16/28 [110/1] via 172.16.7.2, 00:02:30, GigabitEthernet0/0
O E2 10.10.1.32/28 [110/1] via 172.16.7.2, 00:02:30, GigabitEthernet0/0
O E2 10.10.1.48/28 [110/1] via 172.16.7.2, 00:03:40, GigabitEthernet0/0
O E2 10.10.1.64/28 [110/1] via 172.16.7.2, 00:02:30, GigabitEthernet0/0
O E2 10.10.1.80/28 [110/1] via 172.16.7.2, 00:02:30, GigabitEthernet0/0
O E2 10.20.1.0/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.20.1.16/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.20.1.32/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.20.1.48/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.30.1.0/28 [110/1] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O E2 10.30.1.16/28 [110/1] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O E2 10.30.1.32/28 [110/1] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O E2 10.30.1.48/28 [110/1] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O E2 10.30.30.4/30 [110/1] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O E2 10.30.30.12/30 [110/1] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O E2 10.40.1.0/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.40.1.16/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.40.1.32/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.40.1.48/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
B 10.55.1.0/30 [20/0] via 172.16.17.1, 00:00:00
B 10.55.2.0/30 [20/0] via 172.16.17.1, 00:00:00
172.16.0.0/16 is variably subnetted, 15 subnets, 2 masks
O 172.16.1.0/24 [110/2] via 172.16.7.2, 00:03:50, GigabitEthernet0/0
O 172.16.2.0/24 [110/2] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O 172.16.3.0/24 [110/3] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O 172.16.4.0/24 [110/3] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O 172.16.5.0/24 [110/3] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
C 172.16.7.0/24 is directly connected, GigabitEthernet0/0
L 172.16.7.1/32 is directly connected, GigabitEthernet0/0
O 172.16.8.0/24 [110/2] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 172.16.12.0/24 [110/1] via 172.16.7.2, 00:03:50, GigabitEthernet0/0
O 172.16.14.0/24 [110/4] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O 172.16.15.0/24 [110/4] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
C 172.16.16.0/24 is directly connected, GigabitEthernet0/2/0
L 172.16.16.2/32 is directly connected, GigabitEthernet0/2/0
C 172.16.17.0/24 is directly connected, GigabitEthernet0/3/0
L 172.16.17.2/32 is directly connected, GigabitEthernet0/3/0
O E2 192.168.10.0/24 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0

This is US-Data center CE router 

Router#sh ip rou
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, E - EGP
i - IS-IS, 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

Gateway of last resort is not set

10.0.0.0/8 is variably subnetted, 22 subnets, 2 masks
O E2 10.10.1.0/28 [110/1] via 172.16.7.2, 00:02:30, GigabitEthernet0/0
O E2 10.10.1.16/28 [110/1] via 172.16.7.2, 00:02:30, GigabitEthernet0/0
O E2 10.10.1.32/28 [110/1] via 172.16.7.2, 00:02:30, GigabitEthernet0/0
O E2 10.10.1.48/28 [110/1] via 172.16.7.2, 00:03:40, GigabitEthernet0/0
O E2 10.10.1.64/28 [110/1] via 172.16.7.2, 00:02:30, GigabitEthernet0/0
O E2 10.10.1.80/28 [110/1] via 172.16.7.2, 00:02:30, GigabitEthernet0/0
O E2 10.20.1.0/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.20.1.16/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.20.1.32/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.20.1.48/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.30.1.0/28 [110/1] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O E2 10.30.1.16/28 [110/1] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O E2 10.30.1.32/28 [110/1] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O E2 10.30.1.48/28 [110/1] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O E2 10.30.30.4/30 [110/1] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O E2 10.30.30.12/30 [110/1] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O E2 10.40.1.0/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.40.1.16/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.40.1.32/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 10.40.1.48/28 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
B 10.55.1.0/30 [20/0] via 172.16.17.1, 00:00:00
B 10.55.2.0/30 [20/0] via 172.16.17.1, 00:00:00
172.16.0.0/16 is variably subnetted, 15 subnets, 2 masks
O 172.16.1.0/24 [110/2] via 172.16.7.2, 00:03:50, GigabitEthernet0/0
O 172.16.2.0/24 [110/2] via 172.16.7.2, 00:10:40, GigabitEthernet0/0
O 172.16.3.0/24 [110/3] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O 172.16.4.0/24 [110/3] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O 172.16.5.0/24 [110/3] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
C 172.16.7.0/24 is directly connected, GigabitEthernet0/0
L 172.16.7.1/32 is directly connected, GigabitEthernet0/0
O 172.16.8.0/24 [110/2] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O E2 172.16.12.0/24 [110/1] via 172.16.7.2, 00:03:50, GigabitEthernet0/0
O 172.16.14.0/24 [110/4] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
O 172.16.15.0/24 [110/4] via 172.16.7.2, 00:16:00, GigabitEthernet0/0
C 172.16.16.0/24 is directly connected, GigabitEthernet0/2/0
L 172.16.16.2/32 is directly connected, GigabitEthernet0/2/0
C 172.16.17.0/24 is directly connected, GigabitEthernet0/3/0
L 172.16.17.2/32 is directly connected, GigabitEthernet0/3/0
O E2 192.168.10.0/24 [110/1] via 172.16.7.2, 00:16:00, GigabitEthernet0/0

 

 

 

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Harold Ritter
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In response to R Manjunatha

‎05-27-2023 10:24 AM - last edited on ‎06-08-2023 06:35 PM by Community Manager

Hi @R Manjunatha ,

Please try with the latest

.pkt file

I provided.

Regards,

Regards,
Harold Ritter, CCIE #4168 (EI, SP)
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