Mpls route issue

[feroz syed]

Hello,

please check the topology below attached, It is Carrier Supporting Carrier (CSC) lab.

i didn't start the customer side configuration, trying to fix the issue between CSR-9 and IOS-1.
Both router exchanged their routes but they are not reachable ,

R1#tracer mpls ipv4 9.9.9.9/32 so 1.1.1.1
Tracing MPLS Label Switched Path to 9.9.9.9/32, timeout is 2 seconds

Type escape sequence to abort.
0 192.168.12.1 MRU 1500 [Labels: 202 Exp: 0]
L 1 192.168.12.22 MRU 1500 [Labels: 33334 Exp: 0] 7 ms
. 2 *
. 3 *
. 4 *

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, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR

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
3.0.0.0/32 is subnetted, 1 subnets
i L1 3.3.3.3 [115/30] via 192.168.12.22, 00:54:08, GigabitEthernet0/2
7.0.0.0/32 is subnetted, 1 subnets
i L1 7.7.7.7 [115/20] via 192.168.12.22, 00:22:33, GigabitEthernet0/2
9.0.0.0/32 is subnetted, 1 subnets
i L1 9.9.9.9 [115/20] via 192.168.12.22, 00:22:33, GigabitEthernet0/2
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 10.10.13.0/24 is directly connected, GigabitEthernet0/3
L 10.10.13.1/32 is directly connected, GigabitEthernet0/3
12.0.0.0/32 is subnetted, 1 subnets
i L1 12.12.12.12 [115/10] via 192.168.12.22, 01:16:05, GigabitEthernet0/2
88.0.0.0/32 is subnetted, 1 subnets
i L1 88.88.88.88 [115/20] via 192.168.12.22, 00:22:33, GigabitEthernet0/2
172.16.0.0/24 is subnetted, 2 subnets
i L1 172.16.78.0 [115/20] via 192.168.12.22, 00:22:33, GigabitEthernet0/2
i L1 172.16.89.0 [115/20] via 192.168.12.22, 00:22:33, GigabitEthernet0/2
192.168.12.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.12.0/24 is directly connected, GigabitEthernet0/2
L 192.168.12.1/32 is directly connected, GigabitEthernet0/2
i L1 192.168.23.0/24 [115/20] via 192.168.12.22, 01:16:05, GigabitEthernet0/2

------------------------------------------------------------------------------------------------

CSR-9#traceroute mpls ipv4 1.1.1.1/32 so 9.9.9.9
Tracing MPLS Label Switched Path to 1.1.1.1/32, timeout is 2 seconds

Type escape sequence to abort.
0 172.16.89.9 MRU 1500 [Labels: 802 Exp: 0]
L 1 172.16.89.88 MRU 1500 [Labels: 77714 Exp: 0] 20 ms
. 2 *
. 3 *







CSR-9#sh ip route

1.0.0.0/32 is subnetted, 1 subnets
i L1 1.1.1.1 [115/20] via 172.16.89.88, 00:29:05, GigabitEthernet2
3.0.0.0/32 is subnetted, 1 subnets
i L1 3.3.3.3 [115/20] via 172.16.89.88, 00:27:38, GigabitEthernet2
7.0.0.0/32 is subnetted, 1 subnets
i L1 7.7.7.7 [115/30] via 172.16.89.88, 01:02:16, GigabitEthernet2
9.0.0.0/32 is subnetted, 1 subnets
C 9.9.9.9 is directly connected, Loopback0
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 10.10.10.0/24 is directly connected, GigabitEthernet3
L 10.10.10.9/32 is directly connected, GigabitEthernet3
12.0.0.0/32 is subnetted, 1 subnets
i L1 12.12.12.12 [115/20] via 172.16.89.88, 00:27:38, GigabitEthernet2
88.0.0.0/32 is subnetted, 1 subnets
i L1 88.88.88.88 [115/20] via 172.16.89.88, 01:02:21, GigabitEthernet2
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
i L1 172.16.78.0/24 [115/20] via 172.16.89.88, 01:02:21, GigabitEthernet2
C 172.16.89.0/24 is directly connected, GigabitEthernet2
L 172.16.89.9/32 is directly connected, GigabitEthernet2
i L1 192.168.12.0/24 [115/20] via 172.16.89.88, 00:27:38, GigabitEthernet2
i L1 192.168.23.0/24 [115/20] via 172.16.89.88, 00:27:38, GigabitEthernet2

---------------------------------------------------------------

CSR-9# sh mpl for
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
9900 800 7.7.7.7/32 0 Gi2 172.16.89.88
9901 Pop Label 88.88.88.88/32 0 Gi2 172.16.89.88
9902 Pop Label 172.16.78.0/24 0 Gi2 172.16.89.88
9903 802 1.1.1.1/32 0 Gi2 172.16.89.88
9904 803 3.3.3.3/32 0 Gi2 172.16.89.88
9905 804 12.12.12.12/32 0 Gi2 172.16.89.88
9906 805 192.168.12.0/24 0 Gi2 172.16.89.88
9907 806 192.168.23.0/24 0 Gi2 172.16.89.88

---------------------------------------------------------------------------

R1#sh mpl for
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
100 Pop Label 12.12.12.12/32 0 Gi0/2 192.168.12.22
101 Pop Label 192.168.23.0/24 0 Gi0/2 192.168.12.22
102 201 3.3.3.3/32 0 Gi0/2 192.168.12.22
103 202 9.9.9.9/32 0 Gi0/2 192.168.12.22
104 203 7.7.7.7/32 0 Gi0/2 192.168.12.22
105 204 88.88.88.88/32 0 Gi0/2 192.168.12.22
106 205 172.16.78.0/24 0 Gi0/2 192.168.12.22
107 206 172.16.89.0/24 0 Gi0/2 192.168.12.22

--------------------------------------------------------------

R-22#
R-22#
R-22#
R-22#
R-22#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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR

Gateway of last resort is not set

1.0.0.0/32 is subnetted, 1 subnets
i L1 1.1.1.1 [115/10] via 192.168.12.1, 01:22:26, GigabitEthernet0/2
3.0.0.0/32 is subnetted, 1 subnets
i L1 3.3.3.3 [115/20] via 192.168.23.3, 01:00:31, GigabitEthernet0/1
7.0.0.0/32 is subnetted, 1 subnets
i L1 7.7.7.7 [115/10] via 192.168.23.3, 00:28:57, GigabitEthernet0/1
9.0.0.0/32 is subnetted, 1 subnets
i L1 9.9.9.9 [115/10] via 192.168.23.3, 00:28:57, GigabitEthernet0/1
12.0.0.0/32 is subnetted, 1 subnets
C 12.12.12.12 is directly connected, Loopback0
88.0.0.0/32 is subnetted, 1 subnets
i L1 88.88.88.88 [115/10] via 192.168.23.3, 00:28:57, GigabitEthernet0/1
172.16.0.0/24 is subnetted, 2 subnets
i L1 172.16.78.0 [115/10] via 192.168.23.3, 00:28:57, GigabitEthernet0/1
i L1 172.16.89.0 [115/10] via 192.168.23.3, 00:28:57, GigabitEthernet0/1
192.168.12.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.12.0/24 is directly connected, GigabitEthernet0/2
L 192.168.12.22/32 is directly connected, GigabitEthernet0/2
192.168.23.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.23.0/24 is directly connected, GigabitEthernet0/1
L 192.168.23.22/32 is directly connected, GigabitEthernet0/1
R-22#sh mpl for
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
200 Pop Label 1.1.1.1/32 0 Gi0/2 192.168.12.1
201 Pop Label 3.3.3.3/32 0 Gi0/1 192.168.23.3
202 33334 9.9.9.9/32 12854 Gi0/1 192.168.23.3
203 33335 7.7.7.7/32 0 Gi0/1 192.168.23.3
204 33336 88.88.88.88/32 0 Gi0/1 192.168.23.3
205 33337 172.16.78.0/24 0 Gi0/1 192.168.23.3
206 33338 172.16.89.0/24 0 Gi0/1 192.168.23.3
R-22#

-------------------------------------------------------------------




RP/0/0/CPU0:Xrv-3#sh mpl for
Tue Mar 7 07:05:43.883 UTC
Local Outgoing Prefix Outgoing Next Hop Bytes
Label Label or ID Interface Switched
------ ----------- ------------------ ------------ --------------- ------------
33330 Pop 34.34.34.4/32 Gi0/0/0/0 34.34.34.4 18820
33331 Pop 12.12.12.12/32 Gi0/0/0/1 192.168.23.22 7176
33332 Pop 192.168.12.0/24 Gi0/0/0/1 192.168.23.22 0
33333 200 1.1.1.1/32 Gi0/0/0/1 192.168.23.22 0
33334 44444 9.9.9.9/32 Gi0/0/0/0 34.34.34.4 12536
33335 44445 7.7.7.7/32 Gi0/0/0/0 34.34.34.4 0
33336 44446 88.88.88.88/32 Gi0/0/0/0 34.34.34.4 0
33337 44447 172.16.78.0/24 Gi0/0/0/0 34.34.34.4 0
33338 44448 172.16.89.0/24 Gi0/0/0/0 34.34.34.4 0
RP/0/0/CPU0:Xrv-3#




----------------------------------------------------------------




RP/0/0/CPU0:Xrv-7#sh mpl for
Tue Mar 7 07:06:25.790 UTC
Local Outgoing Prefix Outgoing Next Hop Bytes
Label Label or ID Interface Switched
------ ----------- ------------------ ------------ --------------- ------------
77710 Pop 67.67.67.6/32 Gi0/0/0/0 67.67.67.6 12034
77711 Pop 88.88.88.88/32 Gi0/0/0/1 172.16.78.88 7706
77712 Pop 172.16.89.0/24 Gi0/0/0/1 172.16.78.88 0
77713 801 9.9.9.9/32 Gi0/0/0/1 172.16.78.88 0
77714 66664 1.1.1.1/32 Gi0/0/0/0 67.67.67.6 5572
77715 66669 3.3.3.3/32 Gi0/0/0/0 67.67.67.6 0
77716 66670 12.12.12.12/32 Gi0/0/0/0 67.67.67.6 0
77717 66671 192.168.12.0/24 Gi0/0/0/0 67.67.67.6 0
77718 66672 192.168.23.0/24 Gi0/0/0/0 67.67.67.6 0







----------------------------------------------------

R-88#sh mpl for
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
800 Pop Label 7.7.7.7/32 0 Gi0/1 172.16.78.7
801 Pop Label 9.9.9.9/32 0 Gi0/2 172.16.89.9
802 77714 1.1.1.1/32 5668 Gi0/1 172.16.78.7
803 77715 3.3.3.3/32 0 Gi0/1 172.16.78.7
804 77716 12.12.12.12/32 0 Gi0/1 172.16.78.7
805 77717 192.168.12.0/24 0 Gi0/1 172.16.78.7
806 77718 192.168.23.0/24 0 Gi0/1 172.16.78.7
R-88#

[Harold Ritter · Accepted solution]

Hi @feroz syed ,

The LSPs look good from

 CSR-9 and Xrv-7 and R1 and Xrv-3

Is mpls oam enabled on

 Xrv-7 and Xrv-3?

Regards,

[feroz syed]

hello @Harold Ritter 

Thanks for your reply, i didn't enable anywhere the mpls oam,  it is required ?

[Harold Ritter]

Hi @feroz syed ,

"mpls oam" is required in XR to perform mpls ping or traceroute.

Regards,

[feroz syed]

Thanks for take time to find out the problems, the issue is resolved by configuring static route under the

 vrf on XRV-6 and XRV-4

i was wrongly configured the global one and the missing cmd

MPLS OAM on XRV-7 & XRV-3