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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Chapter 1 Overview
Network Configuration Examples
–
GigaStack GBIC module for creating a 1-Gbps stack configuration of up to nine supported
switches. The GigaStack GBIC supports one full-duplex link (in a point-to-point configuration)
or up to nine half-duplex links (in a stack configuration) to other Gigabit Ethernet devices.
Using the required Cisco proprietary signaling and cabling, the GigaStack GBIC-to-GigaStack
GBIC connection cannot exceed 3 feet (1 meter).
–
SFP modules: fiber and copper connections of up to 32,808 feet (10 kilometers) (supported only
on the Catalyst 2950 LRE switches)
• Redundant Gigabit backbone—Using HSRP, you can create backup paths between
Catalyst
3550-12T-L3 switches. To enhance network reliability and load balancing for different
VLANs and subnets, you can connect the Catalyst
2950 switches, again in a star configuration, to
two backbone switches. If one of the backbone switches fails, the second backbone switch preserves
connectivity between the switches and network resources.
Figure 1-1 Example Configurations
Si
Si
Si
Catalyst 2900 XL,
Catalyst 2950,
Catalyst 3500 XL,
and Catalyst 3550
GigaStack cluster
1-Gbps HSRP
60992
Catalyst 2950 switch
Cost-Effective
Wiring Closet
High-Performance
Workgroup
Redundant Gigabit
Backbone
Catalyst 3550-12T or
Catalyst 3550-12G switch
Gigabit
server
Catalyst 2900 XL, Catalyst 2950, Catalyst 2955,
Catalyst 3500 XL, and Catalyst 3550 cluster
Catalyst 3550-12T or
Catalyst 3550-12G switch
Catalyst 3550-12T or
Catalyst 3550-12G switch
Catalyst 2900 XL, Catalyst 2950, Catalyst 2955,
Catalyst 3500 XL, and Catalyst 3550 cluster