Cisco | 2950SX 24 - Catalyst Switch - Stackable | Cisco Catalyst 2950 Switches with Standard Image (SI) Software

Cisco Catalyst 2950 Switches with Standard Image (SI) Software
Product Overview
The Cisco Catalyst® 2950SX-24, 2950-24 and 2950-12, members of the Cisco Catalyst 2950 Series Switches, are
standalone, fixed-configuration, managed 10/100 switches providing basic workgroup connectivity for small to midsized
networks. These wire-speed desktop switches come with Standard Image (SI) Software features and offer Cisco IOS
functionality for basic data, video and voice services at the edge of the network. Embedded in all 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.
This product line offers two distinct sets of software features and a range of configurations to allow small, midsized, and
enterprise branch offices to select the right combination for the network edge. The SI software offers Cisco IOS functionality
for basic data, video, and voice services. For networks with requirements for additional security, advanced quality of service
(QoS), and high availability, the Enhanced Image (EI) software delivers intelligent services such as rate limiting and security
filtering for deployment at the network edge.
The Catalyst 2950SX-24, 2950-12, and 2950-24 switches are only available with the SI software for the Catalyst 2950 Series.
•
•
•
Catalyst 2950SX-24 Switch — 24 10/100 ports with 2 fixed 1000BASE-SX uplinks
Catalyst 2950-24 Switch — 24 10/100 ports
Catalyst 2950-12 Switch — 12 10/100 ports
These switches provide customers with a choice of connectivity options. While the Catalyst 2950-12 and 2950-24 provide
12 and 24 10/100 ports for edge connectivity respectively, the Catalyst 2950SX-24 provides 24 10/100 ports and 2 integrated
1000BASE-SX ports for gigabit uplink connectivity over fiber. With these integrated ports, customers get an extremely costeffective solution for delivering gigabit speeds using fiber. Dual ports also provide redundancy and increased availability, as
well as provide a cost-effective means for cascading switches and managing them as a cluster. This switch is ideal for
education and government segments, where fiber uplinks are a requirement.
Other Catalyst 2950 Series Switches
The Catalyst 2950 Series Intelligent Ethernet Switches with EI Software are also part of the Catalyst 2590 Series switches.
These fixed-configuration, stackable models bring intelligent services, such as advanced QoS, enhanced security, and high
availability to the network edge — while maintaining the simplicity of traditional LAN switching. When a Catalyst 2950
Intelligent Ethernet Switch is combined with a Catalyst 3550 Series Switch, the solution enables IP routing from the edge to
the core of the network. Refer to the Catalyst 2950 Series EI Data Sheet for more information.
Catalyst 2950 Long-Reach Ethernet (LRE) Switches
•
Catalyst 2950ST-24-LRE — 24 Long-Reach Ethernet (LRE) ports and 2 fixed 10/100/1000BASE-T ports and 2 Small
Form Factor Pluggable (SFP) ports (two of the four uplinks active at one time)
•
Catalyst 2950ST-8-LRE — Eight LRE ports and two fixed 10/100/1000BASE-T ports and two SFP ports (two of the four
uplinks active at one time)
The Cisco Catalyst 2950 LRE solution delivers cost-effective, high-performance broadband access over existing phone
wiring in enterprise campus environments and multitenant buildings (for example, hotels, apartment buildings, and office
buildings). The Catalyst 2950 LRE switches come with the EI Software features enabling enterprise and service provider
customers to extend intelligent services over legacy wiring (category 1/2/3) to distances up to 5000 feet. Cisco is the only
company with the breadth of technologies that allow customers to deliver intelligent network services across any
combination of wired and wireless infrastructures. Refer to the Catalyst 2950 LRE Series Data Sheet for more
information.
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1
Key Features and Benefits
Table 21-54: Catalyst 2950 Switches with SI Software — Features and Benefits
Feature
Benefit
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.
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.
Provides unidirectional link detection (UDLD) and Aggressive UDLD for detecting and disabling
unidirectional links on fiber-optic interfaces caused by incorrect fiber-optic wiring or port faults.
Integrated Cisco IOS Features for
Bandwidth Optimization
Bandwidth aggregation through EtherChannel technology enhances fault tolerance and offers higher-speed
aggregated bandwidth between switches, to routers and individual servers. Port Aggregation Protocol (PAgP)
is available to simplify configuration.
Per-port broadcast, multicast, and unicast storm control prevents faulty end stations from degrading overall
systems performance.
Per virtual LAN (VLAN) Spanning-Tree Plus (PVST+) allows for Layer 2 load sharing on redundant links to
efficiently utilize the extra capacity inherent in a redundant design.
VLAN Trunking Protocol (VTP) pruning limits bandwidth consumption on VTP trunks by flooding broadcast
traffic only on trunk links required to reach the destination devices. Dynamic Trunking Protocol (DTP) enables
dynamic trunk configuration across all ports in the switch.
IGMP snooping provides for fast client joins and leaves of multicast streams and limits bandwidth-intensive
video traffic to only the requestors. MVR, IGMP filtering and fast-join and immediate leave are available as
enhancements.
Security
Network-Wide Security Features
A private VLAN edge provides security and isolation between ports on a switch, ensuring that voice traffic
travels directly from its entry point to the aggregation device through a virtual path and cannot be directed to a
different port.
Support for the 802.1x standard allows users to be authenticated regardless of which LAN port they are
accessing, and provides unique benefits to customers who have a large base of mobile (wireless) users
accessing the network.
• 802.1x with voice VLAN to permit an IP phone access to the voice VLAN irrespective of the authorized or
unauthorized state of the port.
• 802.1x with port security for authenticating the port and managing network access for all MAC addresses,
including that of the client.
Port Security secures the access to a port based on the MAC address of a user’s device. The aging feature
removes the MAC address from the switch after a specific timeframe to allow another device to connect to the
same port.
MAC Address Notification allows administrators to be notified of new users added or removed from the
network.
Multilevel security on console access prevents unauthorized users from altering the switch configuration.
Trusted Boundary provides the ability to trust the QoS priority settings if an IP phone is present and disable the
trust setting in the event that the IP phone is removed, thereby preventing a rogue user from overriding
prioritization policies in the network.
TACACS+ and RADIUS authentication to enable centralized control of the switch and restrict unauthorized
users from altering the configuration.
SNMPv3 (non-crypto) monitors and controls network devices, manages configurations, statistics collection,
performance, and security
Cisco CMS Software Security Wizards ease the deployment of security features for restricting user access to a
server, a portion of the network, or access to the network.
QoS
Layer 2 QoS
2 Cisco Product Catalog, April, 2003
Support for reclassifying frames based either on 802.1p CoS value or default CoS value per port assigned by
network manager.
Four queues per egress port supported in hardware.
The WRR scheduling algorithm ensures that low-priority queues are not starved.
Strict priority queue configuration via Strict Priority Scheduling ensures that time-sensitive applications such
as voice always follow an expedited path through the switch fabric.
Feature
Benefit
Management
Superior Manageability
SNMP and Telnet interface support delivers comprehensive in-band management, and a command-line
interface (CLI)-based management console provides detailed out-of-band management.
An embedded Remote Monitoring (RMON) software agent supports four RMON groups (history, statistics,
alarms, and events) for enhanced traffic management, monitoring, and analysis.
A SPAN port can mirror traffic from one or many ports to another port for monitoring all nine RMON groups
with an RMON probe or network analyzer.
Trivial File Transfer Protocol (TFTP) reduces the cost of administering software upgrades by downloading
from a centralized location.
Network Timing Protocol (NTP) provides an accurate and consistent timestamp to all switches within the
intranet.
Layer 2 traceroute eases troubleshooting by identifying the physical path that a packet takes from the source
device to a destination device.
Multifunction LEDs per port for port status, half-duplex/full-duplex, 10BASE-T/100BASE-TX/1000BASE-T
indication, as well as switch-level status LEDs for system, redundant power supply, and bandwidth utilization
provide a comprehensive and convenient visual management system.
Crash Information support enables switch to generate a crash file for improved troubleshooting.
Show-interface-capabilities provides information on configuration capabilities of any interface.
RTTMON-MIB allows users to monitor network performance between a Catalyst switch and a remote device.
Cisco CMS
Cisco CMS Software allows the user to manage up to 16 inter-connected Cisco Catalyst 3550, 2950, 3500 XL,
2900 XL, and 2900 LRE XL switches without the limitation of being physically located in the same wiring
closet, and with the option of using a single IP address for the entire cluster if desired. Full backward
compatibility ensures any combination of the above switches can be managed with a Cisco Catalyst 2950
switch.
Cisco Architecture for Voice, Video and Integrated Data (AVVID) Wizards use just a few user inputs to
automatically configure the switch to optimally handle different types of traffic: voice, video, multicast, and/or
high-priority data.
One-click software upgrades can be performed across the entire cluster simultaneously, and configuration
cloning enables rapid deployment of networks.
Cisco CMS Guide Mode assists users in the configuration of powerful advanced features by providing step-bystep instructions.
Cisco CMS provides enhanced online help for context-sensitive assistance.
Easy-to-use graphical interface provides both a topology map and front panel view of the cluster.
Multi-device and multiport configuration capabilities allow network administrators to save time by configuring
features across multiple switches and ports simultaneously.
Ability to launch the Web-based management for a Cisco Aironet Wireless Access Point by simply clicking on
its icon in the topology map.
User-personalized interface allows users to modify polling intervals, table views, and other settings within
CMS and retain these settings the next time they use CMS.
Alarm notification provides automated e-mail notification of network errors and alarm thresholds.
Support for CiscoWorks
Manageable through CiscoWorks network management software on a per-port and per-switch basis providing
a common management interface for Cisco routers, switches, and hubs.
SNMP v1, v2, and v3 (non-crypto) and Telnet interface support delivers comprehensive in-band management,
and a CLI-based management console provides detailed out-of-band management.
Cisco Discovery Protocol (CDP) Versions 1 and 2 enable a CiscoWorks network management station to
automatically discover the switch in a network topology.
Supported by the CiscoWorks 2000 LAN Management Solution.
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Feature
Benefit
Ease of Use and Ease of Deployment
Auto-configuration eases deployment of switches in the network by automatically configuring multiple
switches across a network via a bootp server.
Auto-sensing on each port detects the speed of the attached device and automatically configures the port for
10- or 100-operation, easing the deployment of the switch in mixed 10- and 100BASE-T environments.
Auto-negotiating on all ports automatically selects half- or full-duplex transmission mode to optimize
bandwidth.
Link Aggregation Control Protocol (LACP) allows the creation of Ethernet channeling with devices that
conform to IEEE 802.3ad. This is similar to Cisco’s EtherChannel and PAgP.
Cisco CDP Versions 1 and 2 enable a CiscoWorks network management station to automatically discover the
switch in a network topology.
Cisco VTP supports dynamic VLANs and dynamic trunk configuration across all switches.
Support for dynamic VLAN assignment through implementation of VLAN Membership Policy Server
(VMPS) client functionality provides flexibility in assigning ports to VLANs.
Voice VLAN simplifies telephony installations by keeping voice traffic on a separate VLAN for easier network
administration and troubleshooting.
The default configuration stored in Flash ensures that the switch can be quickly connected to the network and
can pass traffic with minimal user intervention.
Specifications
Hardware
Table 21-55: Technical Specifications for Catalyst 2950 Series Switches with SI Software
Description
Specification
Performance
8.8-Gbps switching fabric
Catalyst 2950-12: 2.4-Gbps maximum forwarding bandwidth
Catalyst 2950-24: 4.8-Gbps maximum forwarding bandwidth
Catalyst 2950SX-24: 8.8-Gbps maximum forwarding bandwidth
• (Forwarding Rates based on 64-byte packets)
Catalyst 2950-12: 1.8-Mpps wire-speed forwarding rate
Catalyst 2950-24: 3.6-Mpps wire-speed forwarding rate
Catalyst 2950SX-24: 6.6-Mpps wire-speed forwarding rate
8-MB packet buffer memory architecture shared by all ports
16-MB DRAM and 8-MB Flash memory
Configurable up to 8000 MAC addresses
4 Cisco Product Catalog, April, 2003
Description
Specification
Management
BRIDGE-MIB
CISCO-2900-MIB
CISCO-BULK-FILE-MIB
CISCO-CDP-MIB
CISCO-CLASS-BASED-QOS-MIB
CISCO-CLUSTER-MIB
CISCO-CONFIG-COPY-MIB
CISCO-CONFIG-MAN-MIB
CISCO-ENVMON-MIB
CISCO-FLASH-MIB
CISCO-FTP-CLIENT-MIB
CISCO-IMAGE-MIB
CISCO-IPMROUTE-MIB
CISCO-MAC-NOTIFICATION-MIB
CISCO-MEMORY-POOL-MIB
CISCO-PAGP-MIB
CISCO-PING-MIB
CISCO-PROCESS-MIB
CISCO-PRODUCTS-MIB
CISCO-RTTMON-MIB
CISCO-SMI
CISCO-STACKMAKER-MIB
CISCO-STP-EXTENSIONS-MIB
CISCO-SYSLOG-MIB
CISCO-TC
CISCO-TCP-MIB
CISCO-VLAN-MEMBERSHIP-MIB
CISCO-VTP-MIB
ENTITY-MIB
IANAifType-MIB
IF-MIB (RFC 1573)
OLD-CISCO-CHASSIS-MIB
OLD-CISCO-CPU-MIB
OLD-CISCO-INTERFACES-MIB
OLD-CISCO-IP-MIB
OLD-CISCO-MEMORY-MIB
OLD-CISCO-SYSTEM-MIB
OLD-CISCO-TCP-MIB
OLD-CISCO-TS-MIB
RFC1213-MIB (MIB-II)
RFC1398-MIB (ETHERNET-MIB)
RMON-MIB (RFC 1757)
RS-232-MIB
SNMPv2-MIB
SNMPv2-SMI
SNMPv2-TC
TCP-MIB
UDP-MIB
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Description
Specification
Standards
IEEE 802.1x support
IEEE 802.3x full duplex on 10BASE-T and 100BASE-TX ports
IEEE 802.1D Spanning-Tree Protocol
IEEE 802.1p CoS prioritization
IEEE 802.1Q VLAN
IEEE 802.3 10BASE-T specification
IEEE 802.3u 100BASE-TX specification
IEEE 802.3ad
IEEE 802.3z 1000BASE-X specification
Y2K
Y2K compliant
Connectors and Cabling
10BASE-T ports: RJ-45 connectors, two-pair Category 3, 4, or 5 unshielded twisted-pair (UTP) cabling
100BASE-TX ports: RJ-45 connectors; two-pair Category 5 UTP cabling
1000BASE-SX ports: MT-RJ connectors, 50/125 or 62.5/125 micron multimode fiber-optic cabling
Management console port: 8-pin RJ-45 connector, RJ-45-to-DB9 adapter cable for PC connections; for
terminal connections, use RJ-45-to-DB25 female data-terminal-equipment (DTE) adapter (can be ordered
separately from Cisco, part number ACS-DSBUASYN=)
MT-RJ Patch Cables for Catalyst 2950SX24 Switch
Type of Cable ------------------------------------------------ Cisco Part Number
• 1-meter, MT-RJ-to-SC multimode cable - - - - - - - CAB-MTRJ-SC-MM-1M
• 3-meter, MT-RJ-to-SC multimode cable - - - - - - - CAB-MTRJ-SC-MM-3M
• 5-meter, MT-RJ-to-SC multimode cable - - - - - - - CAB-MTRJ-SC-MM-5M
• 1-meter, MT-RJ-to-ST multimode cable - - - - - - - CAB-MTRJ-ST-MM-1M
• 3-meter, MT-RJ-to-ST multimode cable - - - - - - - CAB-MTRJ-ST-MM-3M
• 5-meter, MT-RJ-to-ST multimode cable - - - - - - - CAB-MTRJ-ST-MM-5M
Indicators
Per-port status LEDs: link integrity, disabled, activity, speed, and full-duplex indications
System status LEDs: system, RPS, and bandwidth utilization indications
Mean Time Between Failure (MTBF) —
Predicted
• 268,292 hours (Catalyst 2950-24)
• 318,440 hours (Catalyst 2950-12)
• 403,214 hours (Catalyst 2950SX-24)
Table 21-56: Cables and Accessories for Catalyst 2950 Switches with SI Software
Product Name
Description
1 RU Catalyst Rack Mount Kit
Rack mount kit for 1 RU versions of Catalyst 2950, 3500 XL, 2900 XL switches
Cisco Redundant Power System 300 (RPS
300)
Cisco Redundant Power System 300 (RPS 300) with 1 connector cable
1.2 meter cable for Cisco RPS 300 to
external device connection
1.2 meter cable for Cisco RPS 300 to external device connection
6 Cisco Product Catalog, April, 2003
Table 21-57: Power Specifications for Catalyst 2950 Switches with SI Software
Description
Specification
Power Connectors
Customers can provide power to a switch by using either the internal power supply or the Cisco Redundant
Power System (RPS) 300. The connectors are located at the back of the switch.
Internal Power Supply Connector
• The internal power supply is an auto-ranging unit.
• The internal power supply supports input voltages between 100 and 240 VAC.
• Use the supplied AC power cord to connect the AC power connector to an AC power outlet.
Cisco RPS Connector
• The connector offers connection for an optional Cisco RPS 300 that uses AC input and supplies DC output
to the switch.
• The connector offers a 300-watt redundant power system that can support six external network devices and
provides power to one failed device at a time.
• The connector automatically senses when the internal power supply of a connected device fails and provides
power to the failed device, preventing loss of network traffic.
• Attach only the Cisco RPS 300 (model PWR300-AC-RPS-N1) to the redundant-power-supply receptacle.
Internal Power Supply Connector
•
•
•
•
•
Cisco RPS Connector
• The connector offers connection for an optional Cisco RPS 300 that uses AC input and supplies DC output
to the switch.
• The connector offers a 300-watt redundant power system that can support six external network devices and
provides power to one failed device at a time.
• The connector automatically senses when the internal power supply of a connected device fails and provides
power to the failed device, preventing loss of network traffic.
• Attach only the Cisco RPS 300 (model PWR300-AC-RPS-N1) to the redundant-power-supply receptacle
Power Requirements
Power consumption: 30W (maximum), 102 BTUs per hour
The internal power supply is an auto-ranging unit.
The internal power supply supports input voltages between 100 and 240 VAC.
Use the supplied AC power cord to connect the AC power connector to an AC power outlet.
Cisco RPS Connector
The connector offers connection for an optional Cisco RPS 300 that uses AC input and supplies DC output
to the switch.
• The connector offers a 300-watt redundant power system that can support six external network devices and
provides power to one failed device at a time.
• The connector automatically senses when the internal power supply of a connected device fails and provides
power to the failed device, preventing loss of network traffic.
• Attach only the Cisco RPS 300 (model PWR300-AC-RPS-N1) to the redundant-power-supply receptacle.
AC input voltage/frequency: 100 to 127 or 200 to 240 VAC (auto-ranging), 50 to 60 Hz
DC Input Voltages for Cisco RPS 300 Redundant Power System (RPS): +12V @ 4.5A
Table 21-58: Physical and Environmental Specifications for Catalyst 2950 Switches with SI Software
Description
Specification
Dimensions (H x W x D)
1.72 x 17.5 x 9.52 in. (4.36 x 44.45 x 24.18 cm)
One rack-unit (RU) high (1.72 in./4.36 cm)
Weight
6.5 lbs (3.0 kg)
Operating temperature
32 to 113˚F (0˚ to 45˚C)
Storage temperature
-13 to 158˚F (-25 to 70˚C)
Operating relative humidity
10 to 85% (non-condensing)
Operating altitude
Up to 10,000 ft (3,000 m)
Storage Altitude
Up to 15,000 ft (4,500 m)
Warranty
Limited lifetime warranty
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Description
Specification
Acoustic Noise
ISO 7770, bystander position-operating to an ambient temperature of 30 degrees Celsius:
• WS-C2950-24, WS-C2950-12, WS-C2950C-24, WS-C2950T-24: 46dBa
• WS-C2950G-12, WS-C2950G-24: 46 dBa
• WS-C2950G-48: 48 dBa
Table 21-59: Regulatory Approvals for Catalyst 2950 Switches with SI Software
Description
Specification
Safety Certifications
•
•
•
•
UL 60950/CSA 22.2 No. 950
IEC 60950/EN 60950
AS/NZS 3260, TS001
CE Marking
Electromagnetic Emissions Certifications
•
•
•
•
•
•
•
•
•
FCC Part 15 Class A
EN 55022: 1998 (CISPR 22) Class A
EN 55022: 1998 (CISPR 22)
VCCI Class A
AS/NZS 3548 Class A
CE Marking
CNS 13438 Class A
CLEI Code
MIC
Software
N/A
Ordering Information
Product Part Numbers
All part descriptions and part numbers for Cisco products can be accessed using the online Cisco Pricing Tool at
http://www.cisco.com/cgi-bin/front.x/pricing
The Cisco Pricing Tool requires a user name and password. If you are not already registered, go to
http://www.cisco.com/register and follow the instructions. After you have registered, you may access the Pricing Tool.
Documentation
For more product specific documentation, visit
http://www.cisco.com/go/catalyst2950
8 Cisco Product Catalog, April, 2003
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