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Bridging, Switching, and Spanning Tree 163
Figure 4-17
Root Bridge Election--Bridge 1 Wins
*
Signifies the values that affected the cost values in the CBPDUs
Table 4-10
Bridge Cost Values
Bridge Interface
Cost
Bridge 1, E0
100
Bridge 1, E1
10
Bridge 2, E0 *
100
Bridge 2, E1
100
Bridge 3, E0 *
100
Bridge 3, E1
10
Bridge 4, E0
10
Bridge 4, E1 *
100
Bridge 5, E0 *
10
Bridge 5, E1
100
E0
E1
E1
E1
E0
E0
E0
E0
E1
B1
B2
E1
ID is 0200.2222.2222
Priority 1
Root is 0200.1111.1111
Cost is 100
B5
B3
B4
ID is 0200.3333.3333
Priority 1
Root is 0200.1111.1111
Cost is 200
ID is 0200.5555.5555
Priority 1
Root is 0200.1111.1111
Cost is 10
ID is 0200.4444.4444
Priority 1
Root is 0200.1111.1111
Cost is 110
ID is 0200.1111.1111
Priority 1
Root is 0200.1111.1111
Cost is 0
ch04.fm Page 163 Monday, March 20, 2000 5:02 PM