Manual:BGP based VPLS
BGP based VPLS overview
MPLSVPLS page covers general introduction to VPLS service and configuration of LDP based VPLS tunnels. Due to their static nature LDP based VPLS tunnels have scalability issues that arise when number of VPLSes and sites participating in VPLSes grow. One of the problems is the requirement to maintan full mesh of LDP tunnels between sites forming VPLS. In case number of sites in VPLS is high, adding new site to existing VPLS can become burdensome for network administrator.