[pox-dev] Spanning tree problem!

[Slavica Tomovic]

Hi. I have problem with loops in my OpenFlow network. Topology is next:

   OFswitch1 ---- OFswitch2------------EthernetSwitch---------Internet
      |    \      /   |
      |      \  /     |
      |       /\      |
      |     /    \    |
      |   /        \  |
   OFswitch3      OFswitch4
        \          /
          \      /
          OFswitch5
           |    |
           |    |
          Host1 Host2

I am using l2_learning and openflow.spanning_tree scripts. When I try to
get IP addresses via DHCP server, OFs2 receives DHCP requests, but there is
no any reply. It seems like loops are problem here because when I
disconnect OFs3 I can reach Internet. Can you give me some instruction what
to do? I have used spanning_tree without calling discovery script
explicitly, because I think that spanning_tree does that by itself. Am I
right? I suppose that many of U here had a similar problem so please help!
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