You will need to edit the configuration under the command line to setup a L2TP tunnel to Core Transit in EdgeOS. Please login to the command line and enter the following commands:
configure
set interfaces l2tp-client l2tpc0 authentication user-id <username>
set interfaces l2tp-client l2tpc0 authentication password <password>
set interfaces l2tp-client l2tpc0 mtu 1400
set interfaces l2tp-client l2tpc0 server-ip 216.146.19.255
commit
save
Then you must edit the EdgeOS Perl source code L2TPClient library to ensure it's saving the password as well (this is a bug in EdgeOS implementation of L2TP without IPSEC):
sudo su
vi /opt/vyatta/share/perl5/Vyatta/L2TPClientConfig.pm
Then inside vi type ":316" and press enter (this should take you to line 316). Then press the lower case letter "o" for a new line insert and put the following line in:
$str .= "password $self->{_auth_pass}\n";
Hit the escape key and type ":x" and press enter to save and exit. Please test your changes across a reboot to ensure they are persistent.
