NWTK protocols - STP costs
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- Category: TechBlog
NWTK protocols: STP newer costs
18.10.2016
STP (spanning tree protocol) can be adjusted to higher connection transfer rates by the following Cisco IOS command:
MyRouter(config)#spanning-tree pathcost method long
The default method is "short", which results in the older path costs.
Bandwidth
| Old STP value | New Long STP value | |
| 10 Mbps | 100 | 2,000,000 |
| 100 Mbps | 19 | 200,000 |
| 1 Gbps | 4 | 20,000 |
| N X 1 Gbps | 3 | 10,000 |
| 10 Gbps | 2 | 2,000 |
| 100 Gbps | N/A | 200 |
| 1 Tbps | N/A | 20 |
| 10 Tbps | N/A | 2 |
see also:
http://www.networkworld.com/article/2229866/cisco-subnet/cisco-subnet-spanning-tree-long-path-cost.html