D-Link DES-3326SR User Manual page 119

DES-3326SR Layer 3 Fast Ethernet Switch User's Guide
Router A
0
128.213.0.0
10
10
Router B
Router C
5
5
192.213.11.0
10
Router D
10
222.211.10.0
Figure 5-20. Constructing a Shortest Path Tree
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:
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