D-Link DES-6500 - Switch User Manual page 152

The diagram above shows the network from the viewpoint of Router A. Router A can reach 192.213.11.0 through Router B with a
cost of 10 + 5 = 15. Router A can reach 222.211.10.0 through Router C with a cost of 10 + 10 = 20. Router A can also reach
222.211.10.0 through Router B and Router D with a cost of 10 + 5 + 10 = 25, but the cost is higher than the route through Router
C. This higher-cost route will not be included in the Router A's shortest path tree. The resulting tree will look like this:
xStack DES-6500 Modular Layer 3 Chassis Ethernet Switch User Manual
Figure 6- 118. Constructing a Shortest Path Tree
128.213.0.0
5
192.213.11.0
Figure 6- 119. Constructing a Shortest Path Tree
Router A
0
10
Router B
5
Router D
10
222.211.10.0
137
10
Router C
10