What network exactly you want to connect? Layer 2 or 3? If 2, use EoIP + IPsec. If 3 use L2TP + IPsec.

What network exactly you want to connect? Layer 2 or 3? If 2, use EoIP + IPsec. If 3 use L2TP + IPsec.

Hi Anumrak,

Layer 2 mean bridged network and Layer 3 for routed network.. why you prefer to use pppoe over L2TP ( if mean carrying pppoe_client customer to pppoe_server over l2tp )connection on Layer 3 network ?
I am interested in this topic and I wonder which one might be better and why. can you share some experience ?

Thanks...

I'm having a hard time finding all the values to calculate exactly how much overhead is used, and also the optimal TCP MSS value

Essentially I want to run PPPoE over EoIP over one of the VPN options so that it works behind NAT
I know that fragmentation will occur but I want to calculate the overhead losses for the biggest possible frame size and at least try and mitigate some fragmentation with the correct TCP MSS size

I still don't know which is the best way to go about it. I need the data to be encrypted as well, should I be using...
- PPTP + EoIP/IPsec
- L2TP/IPsec + EoIP
- L2TP + EoIP/IPSec
- SSTP + EoIP
- IPSec/IKEv2 + EoIP

• PPTP + EoIP/IPsec => EoIP over IPsec over PPTP
• L2TP/IPsec + EoIP => EoIP over L2TP over IPsec (causing issues if two such clients are NATed to the same public address, see the reason and the solution)
• L2TP + EoIP/IPSec => EoIP over IPsec over L2TP
• SSTP + EoIP => EoIP over SSTP
• IPSec/IKEv2 + EoIP => EoIP over IPsec