ヤマハルーターからNGN折り返し通信の速度が出ない
Posted: Mon Mar 30, 2026 7:31 am
YAMAHA RTX シリーズからの L2TPv3 を用いた VPN 接続方法 (IPv4, IPv6 対応)
https://ja.softether.org/4-docs/2-howto ... rtx-l2tpv3
YAMAHA ルータにおける設定情報例 #4 (IPv6 で通信を行う場合 フレッツ網内折り返し通信対応)
の設定をし、YAMAHAのLAN1へ接続すれば、vpnserver側のIPが振られ通信ができますが、
iperfをしても10Mbps程度しか速度がでません。何か要因はありますでしょうか？
iperfは計測PCとvpnserverが動いているPC間で測定しています。
計測PC---RTX1210--------------vpnserver
ヤマハルーター側 設定
# Reporting Date: Mar 30 16:50:03 2026
administrator password *
console lines infinity
console prompt sample5
login timer 3000
ipv6 routing on
ipv6 route default gateway dhcp lan2
bridge member bridge1 lan1 tunnel2
ip bridge1 address 192.168.1.254/22
ipv6 lan2 address auto
ipv6 lan2 address dhcp
ipv6 lan2 dhcp service client
tunnel select 2
tunnel encapsulation l2tpv3
tunnel endpoint address XXX
ipsec tunnel 101
ipsec sa policy 101 1 esp aes-cbc sha-hmac
ipsec ike duration ipsec-sa 1 691200 rekey 90%
ipsec ike duration isakmp-sa 1 691200 rekey 90%
ipsec ike keepalive log 1 on
ipsec ike keepalive use 1 on dpd 10 6 0
ipsec ike local name 1 YAMAHA1_ID fqdn
ipsec ike nat-traversal 1 on keepalive=30 force=off
ipsec ike pre-shared-key 1 text XXX
ipsec ike remote address 1 XXX
ipsec ike restrict-dangling-sa 1 off
l2tp always-on on
l2tp tunnel disconnect time off
l2tp keepalive use on 5 10
l2tp keepalive log on
l2tp syslog on
l2tp remote end-id vpn
tunnel enable 2
ipsec auto refresh on
ipsec transport 1 101 udp 1701
dns server dhcp lan2
schedule at 1 */* *:*:00 * lua -e "rt.command(\"ping6 uupdate-XXX.i.open.ad.jp\")"
l2tp service on l2tpv3
statistics traffic on
heartbeat2 myname keepalive
heartbeat2 transmit 1 auth keepalive 192.168.1.255
heartbeat2 transmit interval 30
heartbeat2 transmit enable 1
https://ja.softether.org/4-docs/2-howto ... rtx-l2tpv3
YAMAHA ルータにおける設定情報例 #4 (IPv6 で通信を行う場合 フレッツ網内折り返し通信対応)
の設定をし、YAMAHAのLAN1へ接続すれば、vpnserver側のIPが振られ通信ができますが、
iperfをしても10Mbps程度しか速度がでません。何か要因はありますでしょうか？
iperfは計測PCとvpnserverが動いているPC間で測定しています。
計測PC---RTX1210--------------vpnserver
ヤマハルーター側 設定
# Reporting Date: Mar 30 16:50:03 2026
administrator password *
console lines infinity
console prompt sample5
login timer 3000
ipv6 routing on
ipv6 route default gateway dhcp lan2
bridge member bridge1 lan1 tunnel2
ip bridge1 address 192.168.1.254/22
ipv6 lan2 address auto
ipv6 lan2 address dhcp
ipv6 lan2 dhcp service client
tunnel select 2
tunnel encapsulation l2tpv3
tunnel endpoint address XXX
ipsec tunnel 101
ipsec sa policy 101 1 esp aes-cbc sha-hmac
ipsec ike duration ipsec-sa 1 691200 rekey 90%
ipsec ike duration isakmp-sa 1 691200 rekey 90%
ipsec ike keepalive log 1 on
ipsec ike keepalive use 1 on dpd 10 6 0
ipsec ike local name 1 YAMAHA1_ID fqdn
ipsec ike nat-traversal 1 on keepalive=30 force=off
ipsec ike pre-shared-key 1 text XXX
ipsec ike remote address 1 XXX
ipsec ike restrict-dangling-sa 1 off
l2tp always-on on
l2tp tunnel disconnect time off
l2tp keepalive use on 5 10
l2tp keepalive log on
l2tp syslog on
l2tp remote end-id vpn
tunnel enable 2
ipsec auto refresh on
ipsec transport 1 101 udp 1701
dns server dhcp lan2
schedule at 1 */* *:*:00 * lua -e "rt.command(\"ping6 uupdate-XXX.i.open.ad.jp\")"
l2tp service on l2tpv3
statistics traffic on
heartbeat2 myname keepalive
heartbeat2 transmit 1 auth keepalive 192.168.1.255
heartbeat2 transmit interval 30
heartbeat2 transmit enable 1