• L2TP
  • v3
• PPPoE
  • UBNT

L2TP¶

https://en.wikipedia.org/wiki/Layer_2_Tunneling_Protocol - It is common to carry PPP sessions within an L2TP tunnel.

    [mikrotik] /interface l2tp-server server set enabled=yes use-ipsec=yes

v3¶

appeared as proposed standard RFC 3931 in 2005

https://en.wikipedia.org/wiki/L2TPv3 - can be regarded as being to MPLS what IP is to ATM

PPPoE¶

UBNT¶

/#Services/PPPoE | range in DHCP server : 192.168.11.* | DNS manually /#Routing/Static | auto generated : 10.255.253.0/32

    [mikrotik] /interface/pppoe-client> monitor 
    numbers: 0
            status: connected
            uptime: 14m40s
        active-links: 1
            encoding: 
        service-name: 
            ac-name: EdgeRouter-X-5-Port
            ac-mac: ---
                mtu: 1492
                mru: 1492
    local-address: 192.168.11.100
    remote-address: 10.255.253.0