Connecting The Stack Ports - Cisco 2950 - Catalyst Switch Configuration Manual
Software configuration guide
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Understanding Optional Spanning-Tree Features
Connecting the Stack Ports
A fast transition occurs across the stack of switches if the multidrop backbone connections are a
continuous link from one GigaStack GBIC module to another as shown in the top half of
The bottom half of
convergence time.
You should follow these guidelines:
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Figure 16-6 GigaStack GBIC Module Connections and Spanning-Tree Convergence
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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
16-8
Figure 16-6
A switch supports only one stack port.
Do not connect alternate stack-root ports to stack ports.
Connect all stack ports on the switch stack to the multidrop backbone.
You can connect the open ports on the top and bottom GigaStack GBIC modules within the same
stack to form a redundant link.
GigaStack GBIC connection for fast convergence
Catalyst 3500
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GigaStack GBIC connection for normal convergence
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Chapter 16
shows how to connect the GigaStack GBIC module to achieve a normal
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Configuring Optional Spanning-Tree Features
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Figure
16-6.
78-11380-10
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