SoftEther VPN User Forum

hi

i create a configuration like this one https://www.softether.org/4-docs/2-howt ... Bridge_VPN

the traffic between the ends works well for ICMP and UDP packets but is extremely slow for TCP packets

can any one gime some ideas ?

regards
taq

How to measure the speed?

Using iperf

try iperf3 or use iperf -w 256k

Although there is a layer-2 adjacency created, it has a huge amount of latency compared to a switch, so to measure the maximum throughput we need lots more data in transit at (the TCP window).

TCP over TCP is not good for high latency and high packet loss rate network.
http://sites.inka.de/bigred/devel/tcp-tcp.html