routers cant ping

[l2828]

Hi, I am configuring MPLS VPN between my PE routers, my VRF on the PE routers is functioning fine as the routes are being correctly imported into the PE and CE routers. However, despite the routes being successfully imported, my CE routers cant ping each other even though they are receiving the correct routes. My PE routers can ping each other perfectly fine and I have tried everything I could think of and can't seem to fix the issue. 

I would extremely appreciate any suggestions or help, thank you.

[Blue_Bird]

Hello @ l2828

If you are able share the configurations it will be helpful..!

Please check have you configured ebgp between PE and CE router ?

Here is the sample configuration:

CE1(config)#router bgp 1
CE1(config-router)#neighbor 192.168.12.2 remote-as 234
CE1(config-router)#network 1.1.1.1 mask 255.255.255.255

PE1(config)#router bgp 234
PE1(config-router)#address-family ipv4 vrf CUSTOMER
PE1(config-router-af)#neighbor 192.168.12.1 remote-as 1

I suggest.. Please go through the following article: https://community.cisco.com/t5/networking-knowledge-base/implementation-of-mpls-layer-3-vpn/ta-p/5057311

Best regards
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[l2828]

Hi, thanks so much for the quick reply! can you check your inbox if possible?

[Harold Ritter]

Hi @l2828 ,

It is probably due to the MPLS LSP not being setup properly between the PEs.

You can use mpls ping or traceroute to verify that.

ping mpls ipv4 <remote PE loopback address/32>

It would help if you could share the relevant configuration.

[Jeramiel Xavier Santos]

Can you verify nex-hop-self or share the configuration and diagram ?