Cisco 2950 - Catalyst Switch User Manual

16-8
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
78-11380-10
Chapter 16 Configuring Optional Spanning-Tree Features
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 Figure 16-6.
The bottom half of Figure 16-6 shows how to connect the GigaStack GBIC module to achieve a normal
convergence time.
You should follow these guidelines:
• 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.
Figure 16-6 GigaStack GBIC Module Connections and Spanning-Tree Convergence
Catalyst 2950G-24
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GigaStack GBIC connection for fast convergence
GigaStack GBIC connection for normal convergence
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Cisco 2950 - Catalyst Switch Specifications

General

Forwarding Rate	6.6 Mpps
Jumbo Frame Support	No
Weight	8.8 lbs (4 kg)
RAM	16 MB
Flash Memory	8 MB
Manageable	Yes
Form Factor	Rack-mountable
Ports	24 Ethernet 10/100 ports
Uplink Ports	2 x 10/100/1000Base-T ports
VLANs	250
MAC Address Table Size	8000
Power Supply	100-240 VAC, 50-60 Hz
Dimensions	4.4 cm x 44.5 cm x 24.2 cm
Operating Temperature	0 to 40 °C (32 to 104 °F)
Storage Temperature	-25 to 70 °C (-13 to 158 °F)
Operating Humidity	10% to 85% (non-condensing)
Storage Humidity	5% to 95% (non-condensing)