Acquiring Initial Links

In an RSTP network, the system uses the following process for acquiring new links:

Based on the configuration, the system selects a link as active and the other as redundant.
The spanning tree converges on a topology.
When convergence occurs and the status of the spanning tree ports change to forwarding, network traffic appears on the links.
The local port detects the traffic and confirms the active member as active and the other as the redundant port. Because the initial traffic is broadcast or flooded, both ports receive the packets. However, because of the timing difference, the selected active port remains active.