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Intel® Blade Server Ethernet Switch Module IXM5414E 263
/ NOTE
In this example, only the default STP values are used.
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.
A
B C
Port 1
Port 1
Port 1
Port 1
Port 1
Port 1
Port 2
Port 2
Port 2
Port 2
Port 2
Port 2
Port 3
Port 3
Port 3
Port 3
Port 3
Port 3
LAN 1
LAN 1
LAN 2
LAN 2
LAN 3
LAN 3
Bridge ID = 15
Bridge ID = 15
Bridge ID = 30
Bridge ID = 30
Port Cost = 19
Port Cost = 19
Port Cost = 19
Port Cost = 19
Port Cost = 19
Port Cost = 19
Port Cost = 19
Port Cost = 19
Port Cost =4
Port Cost =4
Port Cost =4
Port Cost =4
Port Cost =4
Port Cost =4
Bridge ID = 20
Bridge ID = 20
A
B C
Port 1
Port 1
Port 1
Port 1
Port 1
Port 1
Port 2
Port 2
Port 2
Port 2
Port 2
Port 2
Port 3
Port 3
Port 3
Port 3
Port 3
Port 3
LAN 1
LAN 1
LAN 2
LAN 2
LAN 3
LAN 3
Blocked
Root Bridge
Root Bridge
Designated Bridge
Designated Bridge
Root Port
Root Port
Root Port
Root Port
Designated Port
Designated Port
Designated Port
Designated Port