LAN 1
Port Cost = 19
A
Port 3
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| Bridge ID = 15 |
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| Port 1 | Port 2 |
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| Port Cost =4 |
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Port Cost =4 |
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| Port Cost =4 | ||
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Port 1 | B |
| C | Port 1 | |||||
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Bridge ID = 30 |
| Bridge ID = 20 | |||||||
Port 2 | Port 3 | Port Cost = 19 | Port 3 | ||||||
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| Port Cost = 19 |
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| Port Cost = 19 |
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LAN 2 |
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| LAN 3 | ||
/NOTE
In this example, only the default STP values are used.
LAN 1
A
Port 3
Root Bridge
Port 1 | Port 2 |
Designated Port | Designated Port |
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Root Port
Port 1
Root Port
B | C | Port 1 |
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Designated Bridge
Port 2 | Port 3 | Blocked | Port 2 | Port 3 |
LAN 2 | LAN 3 |
The bridge with the lowest bridge ID (bridge A) was elected the root bridge, and the ports were selected to give a high port cost between bridges B and C.
Intel® Blade Server Ethernet Switch Module IXM5414E | 263 |
