Hi All
I am bit confused,if I have four routers PE1 <--link1--> p1 <--link2--> p2 <--link3--> PE2 and I advertise labels for physical interfaces only.
Can we have an issue is we are using PHP feature?
Lets say if we running TLDP for L2VPN labels between PE1 and PE2 . Now for L2VPN PE2 will advertise its directly connected interface as next hop.
PE1 LFIB will have <link3> label advetised from P2 as it is directly connected to P2 as well. P1 will use PHP feature and will POP the transport label(outer label) and will forward packet to P2 with VPN label(inner label) only. Now P2 is not aware of VPN label.
We will create blackhole in this case?