Thanks Neale for the response. We are trying to simulate L3VPN usecase and want to maintain counters per FEC(on both PE and P nodes).
Yes, we can achieve label swap/pop without tunnel interface too but that way we are not maintaining per FEC counters. As per my understanding, with tunnels, we can have counters per FEC. I have few follow-up questions based on your responses 1) Are tunnel interfaces meant only for having statistics per FEC or are there any other usecase for creating mpls tunnel? In other words, we can achieve label encapsulation, label swap/pop operations without tunnel too then what's the need of having a tunnel? 2) As per the sample configuration of L3VPN given in https://wiki.fd.io/view/VPP/MPLS_FIB, tunnel interface is not considered. Any reason why tunnel interface is not considered for realizing L3VPN ? Does it have any other implication (if considered for L3VPN) or we can configure L3VPN even with tunnel interface (on both PE and P devices) too and it would be another alternative way? Regards Amit
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