Hello, Lean, I enabled only MPLS on eth1 interfaces on PE1 and PE2, but ping from CE1 to 20.20.20.20 still no.
Packets from CE1 reach PE2. They can be seen on the eth1 interface. They do not reach eth0. As far as I understand, packages only have a service label 80.
PE2:
vyos@vyos:~$ sudo tcpdump -n -i eth1
tcpdump: verbose output suppressed, use -v[v]… for full protocol decode
listening on eth1, link-type EN10MB (Ethernet), snapshot length 262144 bytes
07:22:02.218950 MPLS (label 80, exp 0, [S], ttl 63) IP 10.80.80.2 > 20.20.20.20: ICMP echo request, id 16620, seq 410, length 64
07:22:03.243188 MPLS (label 80, exp 0, [S], ttl 63) IP 10.80.80.2 > 20.20.20.20: ICMP echo request, id 16620, seq 411, length 64
07:22:04.267158 MPLS (label 80, exp 0, [S], ttl 63) IP 10.80.80.2 > 20.20.20.20: ICMP echo request, id 16620, seq 412, length 64
07:22:05.291159 MPLS (label 80, exp 0, [S], ttl 63) IP 10.80.80.2 > 20.20.20.20: ICMP echo request, id 16620, seq 413, length 64
07:22:06.315128 MPLS (label 80, exp 0, [S], ttl 63) IP 10.80.80.2 > 20.20.20.20: ICMP echo request, id 16620, seq 414, length 64
07:22:07.339140 MPLS (label 80, exp 0, [S], ttl 63) IP 10.80.80.2 > 20.20.20.20: ICMP echo request, id 16620, seq 415, length 64
07:22:08.363120 MPLS (label 80, exp 0, [S], ttl 63) IP 10.80.80.2 > 20.20.20.20: ICMP echo request, id 16620, seq 416, length 64