Cisco 2950SX 24 - Catalyst Switch - Stackable User Manual download pdf

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New Products: Cisco Catalyst 2950 Series — Intelligent Ethernet

Switches

Product Overview

Cisco extends its Catalyst 2950 Series Intelligent Ethernet Switches with new ﬁxed-conﬁguration, stackable models that

provide wire-speed Fast Ethernet and Gigabit Ethernet connectivity for mid-sized networks. The Catalyst 2950 Series is an

affordable product line that brings intelligent services, such as advanced quality of service, rate-limiting, security ﬁlters, and

multicast management, to the network edge-while maintaining the simplicity of traditional LAN switching. When a Catalyst

2950 Switch is combined with a Catalyst 3550 Series Switch, the solution enables IP routing from the edge to the core of the

network. Embedded in the Catalyst 2950 Series is the Cisco Cluster Management Suite (CMS) Software, which allows users

to simultaneously conﬁgure and troubleshoot multiple Catalyst desktop switches using a standard Web browser. Cisco CMS

Software provides new conﬁguration wizards that greatly simplify the implementation of converged applications and

network-wide services.

The Cisco Catalyst 2950 Series Intelligent Ethernet Switches consists of the following devices:

• Catalyst 2950G-48 Switch-48 10/100 ports and 2 Gigabit Interface Converter (GBIC)-based

• Gigabit Ethernet ports

• Catalyst 2950G-24 Switch-24 10/100 ports and 2 GBIC ports

• Catalyst 2950G-24-DC Switch-24 10/100 ports, 2 GBIC ports and DC Power

• Catalyst 2950G-12 Switch-12 10/100 ports and 2 GBIC ports

• Catalyst 2950T-24 Switch-24 10/100 ports and 2 ﬁxed 10/100/1000BaseT uplink ports

• Catalyst 2950C-24 Switch-24 10/100 ports and 2 ﬁxed 100BaseFX uplink ports

The complete set of switches offer network managers ﬂexibility when selecting a migration path to Gigabit Ethernet. The

two built-in Gigabit Ethernet ports on the Catalyst 2950G-12, 2950G-24 and 2950G-48 accommodate a range of Gigabit

Interface Converter (GBIC) transceivers, including the Cisco GigaStack GBIC, 1000BaseSX, 1000BaseLX/LH,

1000BaseZX and 1000BaseT (planned future support) GBICs. The dual GBIC-based Gigabit Ethernet implementation

provides customers with tremendous deployment ﬂexibility-allowing customers increased availability with the 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 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.

Key Features and Beneﬁts

Availability

Superior Redundancy for Fault Backup

• IEEE 802.1D Spanning-Tree Protocol support for redundant backbone connections and loop-free networks simpliﬁes

network conﬁguration and improves fault tolerance.

• Support for Cisco Spanning-Tree Protocol enhancements such as UplinkFast, BackboneFast and PortFast technologies

ensure quick fail-over recovery enhancing overall network stability and availability.

• Cisco CrossStack UplinkFast technology extends UplinkFast to a stack to ensure quick fail-over recovery enhancing

network stability and availability.

• Support for Cisco’s optional, 300-watt redundant AC power system provides a backup power source for up to four units

for improved fault tolerance and network uptime.

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Summary of Contents

Page 1 - Switches

1Visit Cisco Connection Online at www.cisco.comNew Products: Cisco Catalyst 2950 Series — Intelligent EthernetSwitchesProduct OverviewCisco extends it

Page 2 - Security

2 Cisco Product Catalog, June, 2002• Redundant stacking connections provide support for a redundant loopback connection for top and bottom switches in

Page 3

3Visit Cisco Connection Online at www.cisco.comControlAdvanced Quality of Service• This feature enables end-to-end QoS in the network by extending the

Page 4 - Scalability

4 Cisco Product Catalog, June, 2002Superior Manageability• Simple Network Management Protocol (SNMP) and Telnet interface support delivers comprehensi

Page 5 - Hardware

5Visit Cisco Connection Online at www.cisco.comEase of Use and Ease of Deployment• Auto-conﬁguration eases deployment of switches in the network by au

Page 6

6 Cisco Product Catalog, June, 2002Table 21-131: Power Speciﬁcations for Cisco Catalyst 2950 Series Intelligent Ethernet SwitchesConnectors and Cablin

Page 7 - Ordering Information

7Visit Cisco Connection Online at www.cisco.comTable 21-132: Physical and Environmental Speciﬁcations for Cisco Catalyst 2950 Series Intelligent Ether

Page 8

8 Cisco Product Catalog, June, 2002