VPN site not rechable

Unanswered Question
Oct 21st, 2013
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Hi,

I am doing lab on GNS and having a very simple scenario, but i am stuck somewhere...

lab diag is attached....

in MPLS clous OSPF is the IGP used... CE is communicated to PE through static routing.

Problem : unable to ping LAN of R1 through R4(PE) even though getting routes via MPBGP


172.16.1.1/24 is connected to R2 and 192.168.1.1/24 is connected to R1


At R4


Router#sh ip bgp all
For address family: VPNv4 Unicast
BGP table version is 9, 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
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
Route Distinguisher: 100:1 (default for vrf ABC)
*>i10.1.1.0/24      3.3.3.3                  0    100      0 ?
*> 10.1.4.0/24      0.0.0.0                  0         32768 ?
*> 172.16.1.0/24    10.1.4.2                 0         32768 ?  (Lan of attached CE R2)
*>i192.168.1.0      3.3.3.3                  0    100      0 ?( LAN of remote end CER1---connected to PE R3)



Router#sh ip route vrf ABC

Routing Table: ABC
Codes: 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

Gateway of last resort is not set

     172.16.0.0/24 is subnetted, 1 subnets
S       172.16.1.0 [1/0] via 10.1.4.2
     10.0.0.0/24 is subnetted, 2 subnets
B       10.1.1.0 [200/0] via 3.3.3.3, 01:11:25
C       10.1.4.0 is directly connected, FastEthernet0/1
B    192.168.1.0/24 [200/0] via 3.3.3.3, 01:57:10  ----- route of other end CE R1 via R3-PE



Router#sh mpls for

Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop

tag    tag or VC   or Tunnel Id      switched   interface

16     Untagged    10.1.3.0/24       0          Fa0/0      10.1.2.3

17     Untagged    5.5.5.5/32        0          Fa0/0      10.1.2.3

18     Aggregate   10.1.4.0/24[V]    0

19     Untagged    172.16.1.0/24[V]  0          Fa0/1      10.1.4.2

20     Untagged    3.3.3.3/32        0          Fa0/0      10.1.2.3

Router#


Similarly at R3....


Router#sh ip bgp all
For address family: VPNv4 Unicast
BGP table version is 15, local router ID is 3.3.3.3
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
Route Distinguisher: 100:1 (default for vrf ABC)
*> 10.1.1.0/24      0.0.0.0                  0         32768 ?
*>i10.1.4.0/24      4.4.4.4                  0    100      0 ?
*>i172.16.1.0/24    4.4.4.4                  0    100      0 ?
*> 192.168.1.0      10.1.1.2                 0         32768 ?



Router#

Router#sh mpls for

Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop

tag    tag or VC   or Tunnel Id      switched   interface

16     Untagged    10.1.2.0/24       0          Fa0/1      10.1.3.2

17     Untagged    192.168.1.0/24[V] 0          Fa0/0      10.1.1.2

18     Untagged    4.4.4.4/32        0          Fa0/1      10.1.3.2

19     Untagged    5.5.5.5/32        0          Fa0/1      10.1.3.2

20     Aggregate   10.1.1.0/24[V]    0


Router#sh ip route vrf ABC

Routing Table: ABC
Codes: 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

Gateway of last resort is not set

     172.16.0.0/24 is subnetted, 1 subnets
B       172.16.1.0 [200/0] via 4.4.4.4, 00:06:14
     10.0.0.0/24 is subnetted, 2 subnets
C       10.1.1.0 is directly connected, FastEthernet0/0
B       10.1.4.0 [200/0] via 4.4.4.4, 00:06:15
S    192.168.1.0/24 [1/0] via 10.1.1.2


Ping responce from R3----

Router#ping vrf ABC 172.16.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Router#ping vrf ABC 192.168.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/36/56 ms
Router#


Please help me....



Thanks

Shashi Mishra

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