Ping to PE interface

Question

I configured the MPLSVPN in my test topology which is chain of 6 router 1 and 6 routers are CE routers and all other are for provier network in which 2 and 5 is PE1 and PE2 router, as PE-CE communication i am using RIP, In both the CE router i have configured 3 loop back interface as internal network.
Here i can see the loopback of each other CEs in their routing tables but i cannot able to ping those loopbacks why?
other strang thing is i can not ping the PE routers interface which are connected with the CE routers so i want to know why i cannot ping the PE routers interface facing to CE routers?
How can i make all those loopback reachable to each other?

Answer 1

Can you pls provide answers in brief for these questions.
1) Ping the remote CE loopback from local CE.
Pass Fail
2) Ping the same subnet from the local PE.
Pass Fail
3) Ping the same subnet from the remote PE connecting the remote CE.
Pass Fail.
4) Check this at Local PE ( show mpls forwarding x.x.x.x [where x.x.x.x is the remote PE loopback])
Pass Fail
5) Check this at the remote PE (show mpls for x.x.x.x [where x.x.x.x is the PE loopback for the local PE])
Pass Fail
6) Finally do a MPLS traceroute or ping from one PE to other.
Pass Fail.
PS: if you dont have MPLS ping/trace in your IOS then do a normal trace from one PE to ther and paste the output.(ideally you should see label swaps with each hop except for the last hop)
This will helps us or may be before you come back, you your self would be able to solve it successfully.
If the above doesnt solve, pls provide a output of "show mpls for" ,a show ip route vrf xx and show ip bgp vpnv4 all vrf xx form both PE's. "show ip route" form both CE's.
Pls mention the PE loopback used for LDP and MPBGP and also the subnet with the problem between CE's.
HTH-Cheers,
Swaroop