Thanks for your reply. I had gone through this URL. This explains how the VPN-v4 address is being exchanged for the L3VPNs between AS. But in a L2VPN(AToM) case, the targetted LDP session is between the PE1 and PE2 in AS1 and AS2. How is this possible by just exchanging VPN-v4 addresses.
The document provided by waris is VPNv4 centric. What is needed to implement InterAS L2VPN is IPv4 + label to share certain IP addresses (PE loopback addresses) and label for these addresses between the tso ASes. Once this is done, implementing L2VPN in an interAS context is as trivial as implementing it in a single AS scenario.
For more information on IPv4 + label, refer to the following document (disregard the VPNv4 section since you don't need it):
Between PE1 and PE2 there is a VC for FR DLCI to DLCI switching.
One obvious reason for this.is that I do not see local label for the remote PE1's loopback at PE2 in AS2. Could it be related to any known issues ?.
While doing PING test over the PVC from CE2 to CE1, I could see input packets and output packets incrementing at CE1 but only output packets count increases on CE2. Echo reply is not reaching the router back.
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