Ok my god, your are 100%, i am really sorry. I just realised I made a terrible mistake.
Thanks to spend some time to help me. Regards Troopy We are still looking for people ready to translate our Vyatta tutorials. http://openmaniak.com and in the same time, we are looking for people interested to check our english texts. ---------- Original Message ---------------------------------- From: "Nick Davey" <[EMAIL PROTECTED]> Date: Wed, 5 Dec 2007 13:42:20 -0500 >I think I understood you. In a layer 2 triangle the root ports will all be >forwarding as it's the STP root. Both devices will be forwarding on the port >connected to the root, as they are root ports. This leaves two ports in >question, the ports connecting the linux machine to the Cisco router. If you >do a show spanning-tree for that interface on the Cisco router you should >see a blocked port on the interface connecting it to the Linux box . On the >Linux box the port connected to the router will be the designated port for >that segment, and will be in forwarding mode. I have a Cisco 2811 and some >2950s, I'll set them up shortly and send in the output, but this conforms to >what I'm seeing in STP docs I referenced. This should not be a loop >regardless as the port on the Cisco router is blocking, and by it's very >nature not forwarding traffic. Is this actually creating a loop? > >On Dec 5, 2007 11:09 AM, Troopy . <[EMAIL PROTECTED]> wrote: > >> >> HEllo >> >> Thanks for your answer but i think you didn't understand me. >> >> If you have a layer 2 triangle: >> 2 (non-root stp) machines (1 Cisco + 1 Linux)have 1 blocking and 1 >> forwarding ports >> 1 (root stp) machine (Linux) has 2 forwarding ports. >> You can try it by yourself, the case study is very simple, you just >> need one cisco router and 2 linux. >> >> >> The thing is on the non-root Linux machine, there are 2 forwarding ports >> which is NOT normal. This creates a loop. >> I think something special has to be changed on Linux ... >> >> Regards >> >> TRoopy >> >> >> >> >> >> ---------- Original Message ---------------------------------- >> From: "Nick Davey" <[EMAIL PROTECTED]> >> Date: Wed, 5 Dec 2007 10:01:40 -0500 >> >> >>From what I've seen both ends of the redundant link won't be blocking, >> one >> >will be forwarding on one end, and one will be blocking. If you refer to >> the >> >original spanning tree diagram drawing in this article: >> >http://en.wikipedia.org/wiki/Spanning_tree_protocol diagram 5 you'll see >> one >> >end of the redundant link is set to designated forwarding, and one is >> >blocking. I believe this is what you're describing? I think this is due >> to >> >spanning tree's requirement that one port on a segment must be chosen for >> a >> >forwarding, or designated role. Hope that helps. >> > >> >Nick >> > >> >On Dec 4, 2007 12:32 PM, Troopy . <[EMAIL PROTECTED]> wrote: >> > >> >> >> >> Hello, >> >> >> >> I tried to test the spanning tree on Vyatta. >> >> >> >> There is one problem with Vyatta and more precisely the Linux >> plateform. >> >> >> >> We made a triangle with two Linux/Vyatta router and a Cisco router. >> >> One of the Linux is set as the root STP. >> >> >> >> The Cisco router has a correct behaviour because it has >> >> a blocking and forwarding port >> >> The root Linux stp has a correct behaviour because it has >> >> two forwarding ports >> >> The problem is on the non-root stp Linux. It has >> >> 2 forwardind ports instead of 1 blocking and one fowarding port. >> >> >> >> I think something has to be changed on the Linux level but what? >> >> >> >> Regards >> >> >> >> TRoopy >> >> >> >> >> >> >> >> >> >> >> >> ______________________________________________________ >> >> Désirez vous une adresse éléctronique @suisse.com? >> >> Visitez la Suisse virtuelle sur http://www.suisse.com >> >> >> >> _______________________________________________ >> >> Vyatta-users mailing list >> >> Vyatta-users@mailman.vyatta.com >> >> http://mailman.vyatta.com/mailman/listinfo/vyatta-users >> >> >> > >> > >> >> >> >> ______________________________________________________ >> Désirez vous une adresse éléctronique @suisse.com? >> Visitez la Suisse virtuelle sur http://www.suisse.com >> >> > > ______________________________________________________ Désirez vous une adresse éléctronique @suisse.com? Visitez la Suisse virtuelle sur http://www.suisse.com _______________________________________________ Vyatta-users mailing list Vyatta-users@mailman.vyatta.com http://mailman.vyatta.com/mailman/listinfo/vyatta-users
