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Figure 1. Cisco Catalyst 2950 Series Switches
This complete set of switches offers network managers flexibility when selecting a migration path to Gigabit Ethernet. The two built-in Gigabit
Ethernet ports on the Cisco Catalyst 2950G-12, 2950G-24 and 2950G-48 accommodate several GBIC transceivers, including the Cisco GigaStack
®
,
1000BASE-SX, 1000BASE-LX/LH, 1000BASE-ZX, 1000BASE-T, and coarse wavelength-division multiplexing (CWDM) GBICs. The dual
GBIC-based Gigabit Ethernet implementation provides customers with tremendous deployment flexibility—giving them increased availability with
redundant uplinks. In sum, the configuration permits customers to implement one type of stacking and uplink configuration today, while preserving
the option to migrate to another configuration in the future. High levels of stack resiliency can also be implemented by deploying dual-redundant
Gigabit Ethernet uplinks, a redundant Cisco GigaStack GBIC loopback cable, UplinkFast and CrossStack UplinkFast technologies for high-speed
uplink and stack interconnection failover, and Per-VLAN Spanning Tree Plus (PVST+) for uplink load balancing.
In addition, the Cisco Catalyst 2950T-24 offers small and medium-sized enterprises server connectivity and an easy migration path to Gigabit by
using existing copper cabling infrastructure. Implementing Gigabit Ethernet over copper allows network managers to boost network performance
and maximize infrastructure investments in Category 5 copper cabling.
Maximum power availability for a converged voice and data network is attainable when a Cisco Catalyst 2950 Switch is combined with the Cisco
Redundant Power System 675 for protection against internal power supply failures and an uninterruptable power supply (UPS) system to safeguard
against power outages.
ADDITIONAL CISCO CATALYST 2950 SERIES SWITCHES
Cisco Catalyst 2950 Series with Standard Image Software
The Cisco Catalyst 2950SX-48-SI, 2950T-48-SI, 2950SX-24, 2950-24 and 2950-12 are standalone, fixed-configuration, managed 10/100 switches
providing basic workgroup connectivity for small to medium-sized companies. These wire-speed desktop switches come with Cisco Standard Image
software features and offer Cisco IOS
®
Software functions for basic data, video, and voice services at the edge of the network.
Cisco Catalyst 2950 Series Long-Reach Ethernet (LRE) Switches
• Cisco Catalyst 2950ST-24-LRE—24 LRE ports, 2 fixed 10/100/1000BASE-T ports, and 2 Small Form-Factor Pluggable (SFP) ports (two of the
four uplinks active at one time)
• Cisco Catalyst 2950ST-8-LRE—Eight LRE ports, two fixed 10/100/1000BASE-T ports, and two SFP ports (two of the four uplinks active at
one time)
The Cisco Catalyst 2950 Series LRE solution delivers cost-effective, high-performance broadband access over existing phone wiring in enterprise
campus environments and multi-tenant buildings (for example, hotels, apartment buildings, and office buildings). Cisco Catalyst 2950 LRE switches
include the Cisco Enhanced Image software features, enabling enterprise and service provider customers to extend intelligent services over
traditional wiring (Category 1/2/3) to distances up to 5000 feet. Cisco is the only company with the breadth of technologies that allows customers to
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