I am connecting two cables from two switches to my Windows Server 2008 machine. The ports are configured as access ports on the switch ports and are in the same VLAN. I want to setup basic redundancy on the Windows Server. I enable the bridge and everything seems to work as expected. However, I believe Windows is running the Spanning Tree Protocol (STP). On my switches, both ports show as Forwarding. That means either a loop is going on, or that Windows took care of making one interface behave in discarding/blocking state.

I would really like to disable STP on Windows so that it lets the BPDUs flow in the bridge. I want my switch to operate STP, not Windows. Does anyone have a clue on how to configure STP on Windows?

This question is about a very specific issue. I am not looking for alternative solutions other than an STP-based one. I cannot implement any form of NIC Teaming on the server.

What I'm trying to achieve

I found out these posts:

http://www.networking-forum.com/viewtopic.php?t=26452 http://reggle.wordpress.com/2011/09/03/hidden-feature-in-windows-7-spanning-tree/

  • 3
    What are you trying to do? Why don't you just use your NIC vendor's tools to configure whatever kind of bonding or failover you're trying to do? – mfinni Aug 15 '13 at 17:23
  • 1
    Why are you bridging? you just want teaming don't you? – Chopper3 Aug 15 '13 at 17:26
  • Actually, I am connecting both ports on two different switches and they don't support 802.3ax/802.3ad for Link Aggregation/NIC Teaming. That's why I'm hoping to use RSTP to provide a failover mechanism. – user7429642 Aug 15 '13 at 17:40
  • Clarify your question, because it currently says "I am connecting two cables from a switch". Your comment says it's two switches (and you don't say how you're linking the switches, which might be relevant.) – mfinni Aug 15 '13 at 17:48
  • Bridging is intended to bridge two different network segments together. I'm assuming then that these two switches aren't connected to each other (if they are you're doing it wrong and you have no need to bridge the network connections in Windows). As such, no loop exists. Windows is bridging the two networks together. There's only one connection between Windows and each of the switches and so each switch port that Windows is connected to should be in the Forwarding state. – joeqwerty Aug 15 '13 at 17:50

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.