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RSTP not working
Posted: Thu Nov 17, 2016 10:57 am
by sanketgroup
Hello
Network cable is going to my 24 port managed switch from my bridge PC, so all other clients on that 24 port can connect to other side server on layer2.
This 24port switch is RSTP enabled, but the port#17 on which softether PC is connected is not able to detect RSTP.
Is there any special settings needs to be done on SoftEther in order to use RSTP?
Thanx
Re: RSTP not working
Posted: Sun Nov 20, 2016 10:25 pm
by moatazelmasry
Can you elaborate more on what are you trying to achieve?
This "SoftEther PC". Is this a server or a client?
Re: RSTP not working
Posted: Wed Nov 23, 2016 11:33 am
by sanketgroup
Ok, for easy and better understanding, pls see attached diagram.
I have mentioned problem in it.
Re: RSTP not working
Posted: Wed Nov 23, 2016 5:20 pm
by raafat
How to did you verify that the remote switch can't recognize the root bridge ?. Also, what is the brand of your switches ?
Re: RSTP not working
Posted: Wed Nov 23, 2016 7:40 pm
by sanketgroup
There are two ways to verify.
1. Port on which SoftEther bridge is connected, showing it as designated port.
It shall be Alter Port or Root Port.
2. Check Root Bridge ID in switch
Just to confirm, on same port if i remove SoftEther Bridge and plug in another CAT6 coming from other side switch, that it surely shows that port as Alternate port. So it just something with SoftEther.
I am tried with many switches. Netgear, Cisco, Mikrotik
Re: RSTP not working
Posted: Thu Nov 24, 2016 5:14 pm
by raafat
Try to enable STP on the bridge that you've created between the servers and local switches.
Re: RSTP not working
Posted: Thu Nov 24, 2016 5:21 pm
by sanketgroup
Bridge between server and local switches?
where do i set that?
Re: RSTP not working
Posted: Thu Nov 24, 2016 5:32 pm
by raafat
On Linux, you have to create the bridge yourself and enable STP on it. Check out this link :
https://help.ubuntu.com/community/KVM/Networking (it's for Ubuntu dist).
Re: RSTP not working
Posted: Thu Nov 24, 2016 5:34 pm
by sanketgroup
SoftEther is running on Windows at both side
Re: RSTP not working
Posted: Thu Nov 24, 2016 5:44 pm
by raafat
The same concept is applied.. search for enabling STP on the bridge that connects the SE adapter to your physical LAN.
Re: RSTP not working
Posted: Thu Nov 24, 2016 5:52 pm
by sanketgroup
I do not see any such option in windows anywhere.
Re: RSTP not working
Posted: Thu Nov 24, 2016 5:59 pm
by raafat
Re: RSTP not working
Posted: Thu Nov 24, 2016 6:05 pm
by sanketgroup
Why i need to create bridge?
It is being managed by SoftEther Bridge.
I also looked at SoftEther Site-to-Site Server and Bridge instruction.
It does not say anywhere to create Windows Bridge.
Two LAN ports on BridgePC are not bridged by windows method.
But still connection works.
So i do not understand why Windows Bridge is needed?
Re: RSTP not working
Posted: Thu Nov 24, 2016 6:11 pm
by sanketgroup
It is layer2 same LAN at both site
Re: RSTP not working
Posted: Thu Nov 24, 2016 6:23 pm
by raafat
Windows Bridge is needed because there may be you can enable STP settings (: while you can not do it with SE bridge (:.
Re: RSTP not working
Posted: Thu Nov 24, 2016 6:28 pm
by sanketgroup
So apart from STP, does it really require to Bridge two adapters in windows?
(method as you gave in previous post?)
I thought Windows bridge is not required as SoftEther software manages that thing.
Because in my current settings, i have never bridged these two ports with that method, but still all traffic coming from 1 port is going out to other 2nd port also.
Re: RSTP not working
Posted: Sun Nov 27, 2016 10:59 pm
by raafat
I would like to suggest this : create a tap device and bridge that tap device to the virtual hub (SE side) and then create another bridge but this time on Windows, create a bridge between the physical interface and the tap device and enable STP on the Windows-bridge settings.
Re: RSTP not working
Posted: Sun Dec 04, 2016 12:52 am
by raafat
Hello There! What have you done regarding your issue ?. Let's know about your interesting case!