Dell Force10 Interoperability Guide

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<strong>Dell</strong> Networking Figure 9 : S4810_2 Configuration Figure 10 : Catalyst 6509 Configuration Convergence Test: 1. Shutdown link Te0/46 on S4810_2 and Te0/47 should take over with minimal traffic interruption. Te0/47 is in discarding state as an alternate port to the root switch. Page 9
<strong>Dell</strong> Networking Results: As per the IEEE 802.1w standard, the alternate port took over as the root port transitioning from discarding to learning and forwarding in less than 2 seconds. 2. Bring back port 0/46 and verify 0/47 goes back to being an alternate port role and discarding state. Traffic should resume very quickly in less than 2 seconds. Results: Previously, with PVST and PVST+, reverting the process did not help in the traffic re-convergence time. The forwarding port still had to go through the traditional spanning tree steps of listening, learning and finally forwarding causing a 30 second traffic drop. With RSTP, this did not take place. As expected, port Te0/47 moved to discarding state and port Te0/46 transitioned to learning, and then forwarding in less than 2 seconds. MSTP MSTP was enabled on all the switches and allowed to converge. Port Te0/47 on S4810_2 is blocking while Te0/46 on the same switch is forwarding. The same set of tests was performed where port Te0/46 is shutdown and Te0/47 becomes active and traffic resumes under 2 seconds. Page 10
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Page 3 and 4: Dell Networking Page iii
Page 5 and 6: Dell Networking Introduction Vendor
Page 7 and 8: Dell Networking In this sample conf
Page 9 and 10: Dell Networking Switch Configuratio
Page 11: Dell Networking Figure 7 : RSTP and
Page 15: Dell Networking Figure 12 : Port Ch

Dell Force10 Interoperability Guide

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