And the developers seems to ignore this community entirely. 1500 views and not a single reply, not even the slightest hint at what the issue could be, no theories offered or anything. Well, in the end I've come up with a solution.įirst of all however I am greatly disappointed in this community. The other server (German) works just fine every time, and we get good speeds every time, but the UK site refuses.ĭoes anyone have any ideas what to try next? My first attempt at finding a solution was to fix the TCP connections but it only opens up 2 TCP connections, sometimes just one. ![]() I need a way to sync the SwedenUK site but nothing across the VPN is usable due to the slow speeds, and no other VPN-less solutions are good for syncing or cloning volumes across WAN. And only two TCP connections even when the client is set to 8, and no restrictions on the server. The UK ISP reports no traffic shaping or throttling, I've tried different ports, with and without Hyper-V, i've tried with a fresh config of SoftEther client, I've even tried to connect to a secondary SoftEther server in case there were some limitations imposed on the primary, but all with the same slow results. SFTP is not a solution since it won't be able to preserve file attributes or detect changes etc (as normal sync software would do), and alternative software such as SyncThing, Syncrify, DeltaCopy etc are too slow as they are using only a single TCP connection (whereas with FTP I can use several parallel connections). I could skip VPN here if I found something that would work. I've tried alternative VPN solutions such as Hamachi and OpenVPN with similar slow results, the only way to get the full speed is by using SFTP or HTTP, but I have not yet found any software than can do proper volume syncing using those protocols. It's only as soon as we use the VPN things slow down to a crawl. Any traffic going through the tunnel is dead slow.īut the kicker is, if we do a SFTP file download from Sweden to UK without the VPN tunnel across only 4 parallel threads we get full speed, so there's nothing wrong with the infrastructure speeds. The speeds are awful and the SMB tunnel is barely usable.Īs I mentioned, the UK side only opens up two 2 TCP connections even when it's set to 8. Germany Sweden (using 1 thread, 8 TCP connections):Ĭode: Select all 0.00-10.00 sec 11.0 MBytes 9.23 Mbits/sec sender Here are the iPerf speeds just to get an idea what I get from each client: I would expect to get similar speeds from the UK site as the others as it's 300Mbit download, but to no avail. The problem is that regardless what I do it can only open up 2 TCP connections from this client, and the speeds are abysmal across the VPN. Meant to be used to sync volumes between the main server (Sweden) and backup server (UK) using sync software (RoboCopy, SyncThing, FastCopy etc) Runs SoftEther VPN client in a Hyper-V VM, with identical configuration as the German connection above. ![]() It pulls data through an SMB share on the main server (Sweden), acting as a relay for the data located in Sweden.ģ00/50 connection. Getting around 300-400Mbit-ish speeds depending on server load and routing etc. Dials in to my server, set to 8 TCP connections to max out available bandwidth. ![]() Running SoftEther VPN client in a Hyper-V VM. Clients connect to it and gets an IP from my DHCP server.ġ000/1000Mbit. No limitations on the server in terms of allowed TCP connections etc. Running SoftEther VPN Server in a Hyper-V VM. All the data is always flowing from the main connection to the clients, never the other way around, so the only bandwidth that is needed by the clients is download speed.ġ000/500Mbit. It's also meant to be used to sync volumes between the main server and backup server. Traffic is mostly SMB as the clients connect to it and pulls data from a network share on my server. I am using it to tie a hosting server on the net to my private server at home to exchange smb traffic, and since it needs to be secure a VPN tunnel using SoftEther is used. I've been using SoftEther for several years now and it's been great up until now. First of all, thanks for an excellent product.
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