Tuesday, August 01, 2006

Corrected

We had very high standard deviations in the convergence time of RSTP in our topologies. Investigating the reasons, we found that links going from Blocking to Forwarding state with a blocked state on the others side were taking two hello time worth in switching state. That doesnt matter to us, because those links dont carry any stations originating traffic (point to point ethernet links) and do not form part of the spanning tree. The spanning tree itself converges upon link failure within a second in all of our failure scenarios. I had to make adjustments to the shell scrip to summarize the results and we are running the simulations yet again.