How do you calculate the cost of a spanning tree?
How do you determine the cost of a spanning tree? By the sum of thecosts of the edges and vertices of the graph.
What is the cost of minimum spanning tree by Prim’s algorithm?
The cost of MST will be calculated as; cost(MST) = 4 + 2 + 1 + 3 = 10 units. Kruskal’s Algorithm is used to find the minimum spanning tree for a connected weighted graph. The main target of the algorithm is to find the subset of edges by using which, we can traverse every vertex of the graph.
What is path cost?
Path cost – The path cost is the metric stp uses to calculate the shortest path to elect root port to reach the root-bridge . The path cost is based on the speed of the interface of switch .
What is the STP port cost for a 1 Gbps Gigabit Ethernet connection?
The default port cost is defined by the speed at which the port operates. As shown in Table 3-1, 10 Gbps Ethernet ports have a port cost of 2, 1 Gbps Ethernet ports have a port cost of 4, 100 Mbps Fast Ethernet ports have a port cost of 19, and 10 Mbps Ethernet ports have a port cost of 100.
Which is better Prims or Kruskal?
Prim’s algorithm is significantly faster in the limit when you’ve got a really dense graph with many more edges than vertices. Kruskal performs better in typical situations (sparse graphs) because it uses simpler data structures.
Which algorithm is used to find the minimum cost?
network simplex algorithm
The minimum cost flow problem is one of the most fundamental among all flow and circulation problems because most other such problems can be cast as a minimum cost flow problem and also that it can be solved efficiently using the network simplex algorithm.
Which algorithm is used to find the minimum spanning tree?
Prim’s algorithm
Prim’s algorithm is one way to find a minimum spanning tree (MST). A minimum spanning tree (shown in red) minimizes the edges (weights) of a tree.
What is path cost in AI?
Cost of a path is the sum of costs of individual actions along the path. Goal test – test to determine if at goal state.
How do I change the spanning tree cost on an interface?
By changing the STP port costs with the command spanning tree [vlan vlan-id] cost cost, you can modify the STP forwarding path. You can lower a path that is currently an alternate port while making it designated, or you can raise the cost on a port that is designated to turn it into a blocking port.
How is STP port cost calculated?
SW3 receives BPDUs on its 10 Mbit interface (cost 100) and on its 1000 Mbit interface (cost 4). It will use its 1000 Mbit interface as its root port (shortest path to the root bridge is 19+19+4=42). SW3 will forward BPDUs to SW4. The root path cost field will be 100….Spanning-Tree Cost Calculation.
| Bandwidth | Cost |
|---|---|
| 100 Mbit | 19 |
| 1000 Mbit | 4 |