route in RIB but the ping not working - UNIFIED MPLS

[simophrenia]

Hi, i'm working on a topology to implement unified mpls between core, aggregation and access networks, seems like everything is okay, the routes, the labels IGP and BGP ones are well distributed but when it comes to ping its not working, if anyone have any idea what to do please tell :

this is some verifications that illustre my problem, i'm trying to ping this address 172.16.1.11

-routring table , ip bgp table ,  ip bgp labels , ping to next hop --- attatched

thank you.

[Renan Abreu]

Hi,

     Can you check if the labels are fine? Do you have the configuration used? Check the link below, it explains how unified MPLS works.

http://www.cisco.com/c/en/us/support/docs/multiprotocol-label-switching-mpls/mpls/116127-configure-technology-00.html

[simophrenia]

Hi, thanks for your reply

i checked the link, the configuration seems okay and labels too. well this is the topology i'm working on

PAN_RR(PE) -------AGN------ABR_RR----------CN---------MTG(PE)

172.16.1.11----------------------172.16.1.1----------------------172.16.1.10

i want to ping between the two PEs, i have reachabilty between PAN and ABR and between ABR and MTG

here is some tables from PAN_RR(PE):

sh ip bgp 

   Network          Next Hop            Metric LocPrf Weight Path
* i172.16.1.10/32   172.16.1.2               0    100      0 i
*>i                 172.16.1.1               0    100      0 i
*> 172.16.1.11/32   0.0.0.0                  0         32768 i
r i172.16.1.22/32   172.16.1.2               0    100      0 i
r>i                 172.16.1.1               0    100      0 i
* i172.16.1.55/32   172.16.1.2               0    100      0 i
*>i                 172.16.1.1               0    100      0 i
* i172.16.1.66/32   172.16.1.2               0    100      0 i
*>i                 172.16.1.1               0    100      0 i

the PE's(172.16.1.10) route is there and its best route

sh ip bgp labels

PAN_iRR#sh ip bgp labels
Network          Next Hop         In Label/Out Label
172.16.1.10/32   172.16.1.2       nolabel/51
172.16.1.10/32   172.16.1.1       nolabel/51
172.16.1.11/32   0.0.0.0          imp-null/nolabel
172.16.1.22/32   172.16.1.2       25/50
172.16.1.22/32   172.16.1.1       25/50
172.16.1.55/32   172.16.1.2       nolabel/48

BGP label is fine

show mpls forwarding-table

Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop    
tag    tag or VC   or Tunnel Id      switched   interface              
16     Pop tag     10.1.1.16/30      0          Fa0/0      10.1.1.2     
17     Pop tag     10.1.1.4/30       0          Fa0/0      10.1.1.2     
18     Pop tag     10.1.1.12/30      0          Fa2/0      10.1.1.10    
19     Pop tag     10.1.1.20/30      0          Fa2/0      10.1.1.10    
20     Pop tag     33.33.33.33/32    0          Fa0/0      10.1.1.2     
21     Pop tag     44.44.44.44/32    0          Fa2/0      10.1.1.10    
22     21          172.16.1.1/32     0          Fa0/0      10.1.1.2     
23     23          172.16.1.2/32     15584      Fa2/0      10.1.1.10    
24     21          22.22.22.22/32    0          Fa2/0      10.1.1.10 

next-hop prefixes are there and ldp labels seems fine too

but still can't ping

if you have any idea what else i should verify 

thank you.

[Renan Abreu]

Please run show ip cef 172.16.1.10 on PAN_RR.

On ABR_RR please run the commands below.

show ip route 172.16.1.10

show ip cef 172.16.1.10

show ip route 172.16.1.11

show ip cef 172.16.1.11

It would be nice to review the router's configuration if you can send...

[simophrenia]

router's configuration is attached

here is the shows command you asked for 

PAN_iRR#show ip cef 172.16.1.10  
172.16.1.10/32, version 43, epoch 0, cached adjacency 10.1.1.2
0 packets, 0 bytes
  tag information set
    local tag: BGP route head
    fast tag rewrite with Fa0/0, 10.1.1.2, tags imposed: {16 45}
  via 172.16.1.1, 0 dependencies, recursive
    next hop 10.1.1.2, FastEthernet0/0 via 172.16.1.1/32
    valid cached adjacency
    tag rewrite with Fa0/0, 10.1.1.2, tags imposed: {16 45}

ABR_iRR#show ip route 172.16.1.10
Routing entry for 172.16.1.10/32
  Known via "ospf 1", distance 110, metric 3, type intra area
  Last update from 192.168.1.6 on FastEthernet2/0, 00:04:25 ago
  Routing Descriptor Blocks:
    192.168.1.6, from 172.16.1.10, 00:04:25 ago, via FastEthernet2/0
      Route metric is 3, traffic share count is 1
  * 192.168.1.2, from 172.16.1.10, 00:04:25 ago, via FastEthernet1/0
      Route metric is 3, traffic share count is 1

ABR_iRR#show ip cef 172.16.1.10
172.16.1.10/32, version 48, epoch 0, per-destination sharing
0 packets, 0 bytes
  tag information set
    local tag: 45
  via 192.168.1.6, FastEthernet2/0, 0 dependencies
    traffic share 1
    next hop 192.168.1.6, FastEthernet2/0
    valid adjacency
    tag rewrite with Fa2/0, 192.168.1.6, tags imposed: {29}
  via 192.168.1.2, FastEthernet1/0, 0 dependencies
    traffic share 1
    next hop 192.168.1.2, FastEthernet1/0
    valid adjacency
    tag rewrite with Fa1/0, 192.168.1.2, tags imposed: {25}
  0 packets, 0 bytes switched through the prefix
  tmstats: external 0 packets, 0 bytes
           internal 0 packets, 0 bytes
ABR_iRR#show ip route 172.16.1.11
Routing entry for 172.16.1.11/32
  Known via "ospf 100", distance 110, metric 3, type intra area
  Redistributing via ospf 1
  Last update from 10.1.1.18 on FastEthernet0/0, 00:06:15 ago
  Routing Descriptor Blocks:
  * 10.1.1.18, from 11.11.11.11, 00:06:16 ago, via FastEthernet0/0
      Route metric is 3, traffic share count is 1

ABR_iRR#show ip cef 172.16.1.11  
172.16.1.11/32, version 27, epoch 0, cached adjacency 10.1.1.18
0 packets, 0 bytes
  tag information set
    local tag: 24
    fast tag rewrite with Fa0/0, 10.1.1.18, tags imposed: {22}
  via 10.1.1.18, FastEthernet0/0, 0 dependencies
    next hop 10.1.1.18, FastEthernet0/0
    valid cached adjacency
    tag rewrite with Fa0/0, 10.1.1.18, tags imposed: {22}