Cisco 2950 Software Configuration Guide - Page 46

Network Configuration Examples Chapter 1 Overview - 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 Catalyst 2950 switch Cost-Effective Wiring Closet Catalyst 2900 XL, Catalyst 2950, Catalyst 3500 XL, and Catalyst 3550 GigaStack cluster High-Performance Workgroup Catalyst 3550-12T or Catalyst 3550-12G switch Si Gigabit server Catalyst 2900 XL, Catalyst 2950, Catalyst 2955, Catalyst 3500 XL, and Catalyst 3550 cluster Catalyst 3550-12T or Catalyst 3550-12T or Catalyst 3550-12G switch Catalyst 3550-12G switch 1-Gbps HSRP Si Si Redundant Gigabit Backbone 60992 Catalyst 2900 XL, Catalyst 2950, Catalyst 2955, Catalyst 3500 XL, and Catalyst 3550 cluster 1-12 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10