If the RSTP port cost is 200,000, what is the corresponding link speed?

The correct link speed corresponding to an RSTP (Rapid Spanning Tree Protocol) port cost of 200,000 is indeed 100 Mbps. In the context of RSTP, port costs are determined based on the speed of the link. The cost values are standardized as follows:

• 10 Mbps links have a port cost of 100.

• 100 Mbps links have a port cost of 19.

• 1 Gbps links have a port cost of 4.

• 10 Gbps links have a port cost of 2.

In this case, the cost of 200,000 does not directly correspond to any of the higher speeds in the standard calculations. Instead, RSTP defines the port cost based on a metric that considers factors such as the link's bandwidth and the way those costs are calculated can vary based on network configurations or specific implementations. However, in the standardized view, the cost figure for 100 Mbps typically falls within the range that corresponds to a higher numerical portal cost, often aligning more generally with additional increments in cost for even higher bandwidths.

Thus, while the given port cost of 200,000 may relate to specific network conditions or settings, associating it with 100 Mbps is consistent