I have an issue problem on one PE (PE-3), if I doing test from the neighbor or another PE to PE-3 using "ping mpls pseudowire <loopback PE-3> <VCID>" and ping using vrf to PE-3 there is many packet loss, but ping test to loopback PE-3 is normal no packet loss.
From description and diagram, Am I assuming right that 192.168.9.2 is configured on PE-2?. if so, I think the comparision should be between L2VC ping and ICMP ping to x.x.x.130.
Can you share the configuration from PE-1?. Do you have any CoPP or QoS enabled?. L2VC ping is not ICMP based and uses 127.x.x.x address as destination. So they are a bit different with L3 details in header (though it is a ping to same address).
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