https://datatracker.ietf.org/doc/html/rfc3931
RFC 3931 - Layer Two Tunneling Protocol - Version 3 (L2TPv3)
Layer Two Tunneling Protocol - Version 3 (L2TPv3) (RFC 3931, )
protocol versionrfclayertwotunneling
https://www.softether.org/4-docs/2-howto/9.L2TPIPsec_Setup_Guide_for_SoftEther_VPN_Server/6.Cisco_IOS_L2TPv3%2F%2F%2F%2FIPsec_Edge-VPN_Router_Setup
Cisco L2TPv3/IPsec Edge-VPN Router Setup - SoftEther VPN Project
vpn router setupsoftether projectciscol2tpv3ipsec
https://datatracker.ietf.org/doc/html/rfc4454
RFC 4454 - Asynchronous Transfer Mode (ATM) over Layer 2 Tunneling Protocol Version 3 (L2TPv3)
Asynchronous Transfer Mode (ATM) over Layer 2 Tunneling Protocol Version 3 (L2TPv3) (RFC 4454, )
protocol versionrfcasynchronoustransfermode
https://ja.softether.org/4-docs/2-howto/Other_VPN_Appliance_Setup_Guide/6
Cisco ルータからの L2TPv3 を用いた VPN 接続方法 - SoftEther VPN プロジェクト
ciscol2tpv3vpnsoftether