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Hi!My test lab works fine, but when I do a "debug spanning-tree bpdu"I never see bpdus of the root bridge in my logs. I have tried it out with a C3750 and a C3550 as a root bridge, but it is always the same.If any one could help me - that would be g...
Dear guys,as far as I read only port up/downs can trigger TCNs.I have got 4 switches connected to each other.The direct link to the root bridge breaks down. The other switch (switch2) now asumesitself as root. I guess that's the reason why it does no...
Hi!I did a couple of STP tests in my lab.The following confused me:SW1#sh spanVLAN0001 Spanning tree enabled protocol ieee[...]Int Role Sts Cost Prio.Nbr Type---------------- ---- --- --------- -------- [...}Gi1/0/2 Altn BLK 19 128...
Hi Guiseppe!Thank you for the answer and the hint!But I am luckily in the lab.That's exactly what I could see.I see outgoing config bpdus from all switches (except the root).As soon as Topology Changes happen - I see more.So there is no way to change...
Hi Giuseppe,thank you for writing back so quickly.You brought already some light in this issue ... but there are still some inconsistencies for me ...I think that didn't come out in my last message:switch2 sends straight away (without waiting for t...
