[j-nsp] BGP VPLS support

[Monika M]

As per BGP VPLS RFC 4761 section 3.2.2, "if the PE is connected to several
u-PEs, it has a distinct VEID for each u-PE. It may additionally have a VE
ID for itself, if it itself acts as a VE for that VPLS."

Does Juniper support connecting PE to many u-PEs?. I have this doubt as
Juniper allows only one site id configuration in the PE router.
If  connecting to multiple u-PE is supported, can any one point to the
document (configuration) to achieve this?

TIA,
Monika.