Cisco Systems 2950SX-24 User Manual

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Data Sheet

Cisco Catalyst 2950 Series Switches

with Standard Image Software

Product Overview

The Cisco® Catalyst® 2950SX-48,2950T-48,2950SX-24,2950-24,and2950-12switches, members of the Cisco Catalyst 2950 Series, are standalone,fixed-configuration,managed10/100-Mbpsswitches providing basic workgroup connectivity for small to midsize networks. Thesewire-speeddesktop switches come with Standard Image software features and offer Cisco IOS® Software functions for basic data, voice, and video services at the edge of the network. Embedded in all Cisco Catalyst 2950 Series switches is the Cisco Cluster Management Suite (CMS) software, which allows users to simultaneously configure and troubleshoot multiple Cisco Catalyst desktop switches using a standard Web browser. In addition, with the newly launched Cisco Express Setup, users now have the option to set up the switch through a Web browser, eliminating the need for more complex terminal emulation programs and knowledge of thecommand-lineinterface (CLI). Cisco Express Setup reduces the cost of deployment by enablingless-skilledpersonnel to set up switches quickly. This product line offers two distinct sets of software features and a range of configurations to allow small, midsize, and enterprise branch offices to select the right combination for the network edge. For networks that require additional security, advanced quality of service (QoS), and high availability, Enhanced Image software delivers intelligent services such as rate limiting and security filtering for deployment at the network edge.

The Cisco Catalyst 2950SX-48,2950T-48,2950SX-24,2950-12and2950-24switches (Figures1–5)are available only with the Standard Image (SI) software for the Cisco Catalyst 2950 Series.

Cisco Catalyst 2950SX-48 Switch—4810/100-Mbpsports with two fixed1000BASE-SXuplinks

Cisco Catalyst 2950T-48 Switch—4810/100-Mbpsports with two fixed 10/100/1000BASE-Tuplinks

Cisco Catalyst 2950SX-24 Switch—2410/100-Mbpsports with two fixed1000BASE-SXuplinks

Cisco Catalyst 2950-24Switch— 24 10/100-Mbps ports

Cisco Catalyst 2950-12Switch—12 10/100-Mbps ports

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Figure 1

Cisco Catalyst 2950-12Switch

Figure 2

Cisco Catalyst 2950-24Switch

Figure 3

Cisco Catalyst 2950SX-24Switch

Figure 4

Cisco Catalyst 2950T-48Switch

Figure 5

Cisco Catalyst 2950SX-48Switch

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These switches provide customers with many connectivity and port-densityoptions. The Cisco Catalyst2950-12and Cisco Catalyst2950-24switches provide 12 and 2410/100-Mbpsports, respectively, for edge connectivity. Depending onport-densityrequirements, customers with gigabit fiber uplink connectivity needs can choose between the Cisco Catalyst2950SX-24Switch, which provides 2410/100-Mbpsports and 2 integrated1000BASE-SXports, and the Cisco Catalyst2950SX-48Switch, which provides 4810/100-Mbpsports and 2 integrated1000BASE-SXports.

With these integrated ports, customers get an extremely cost-effectivesolution for delivering gigabit speeds using fiber. These switches are ideal for education and government segments where fiber uplinks are required. For customers that do not need fiber connectivity, the Cisco Catalyst2950T-48Switch with 4810/100-Mbpsports and two integrated 10/100/1000BASE-Tports is acost-effectivealternative. The 10/100/1000BASE-Tports can be used for server connectivity or for uplink connectivity to distribution or other switches. Dual ports also provide redundancy and increased availability, as well as provide acost-effectivemeans for cascading switches and managing them as a cluster. The Cisco Catalyst 2950 Series Intelligent Ethernet switches with Enhanced Image software arefixed-configurationmodels that bring intelligent services, such as advanced QoS, enhanced security, and high availability to the network edge while maintaining the simplicity of traditional LAN switching. Combining a Cisco Catalyst 2950 Series Intelligent Ethernet Switch with a Cisco Catalyst 3550 Series Switch enables IP routing from the edge to the core of the network. Refer to the Cisco Catalyst 2950 Series Enhanced Image Data Sheet for more information:http://www.cisco.com/en/US/partner/products/hw/switches/ps628/products_data_sheet09186a00801a0c5b.html

Network Availability with Wire-SpeedPerformance in Connecting End Stations

to the LAN

With a switching fabric of 13.6 Gbps and a maximum forwarding bandwidth of 13.6 Gbps, Cisco Catalyst 2950 Series switches deliver wire-speedperformance on all ports in connecting end stations and users to the company LAN. Cisco Catalyst 2950 Series switches with basic services supportperformance-boostingfeatures such as Cisco Fast EtherChannel® to providehigh-performancebandwidth between Cisco Catalyst switches, routers, and servers.

Network Security

Cisco Catalyst 2950 Series switches offer enhanced data security through a wide range of security features. These features allow customers to provide network security based on users or MAC addresses. The security enhancements are available free by downloading the latest software for the Cisco Catalyst 2950 Series switches.

Private VLAN Edge isolates ports on a switch, ensuring that traffic travels directly from the entry point to the aggregation device through a virtual path and cannot be directed to another port. In addition, for authentication of users with a TACACS+ or a RADIUS server, 802.1x provides port-levelsecurity. Simple Network Management Protocol Version 3 (SNMPv3)(non-crypto)monitors and controls network devices as well as manages configurations, performance, collection of statistics, and security.

With the Cisco Catalyst 2950SX-48,2950T-48,2950SX-24,2950-24,and2950-12switches, network managers can make ports and consoles highly secure.MAC-address-basedport-levelsecurity prevents unauthorized stations from accessing the switch. Multilevel access security on the switch console and the Web management interface prevents unauthorized users from accessing or altering switch configurations and can be implemented using an internal user database on each switch or a centrally administered TACACS+ or RADIUS server. Using 802.1x in conjunction with

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a RADIUS server allows dynamic port-baseduser authentication. In addition, 802.1x can coexist with port security on aper-portbasis. Security features can be deployed using Cisco CMS software security wizards, which ease the deployment of security features that restrict user access to a server or portion of the network or restrict the applications used in certain areas of the network.

Network Control

Cisco Catalyst 2950SX-48,2950T-48,2950SX-24,2950-24,and2950-12switches deliverLAN-edgeQoS, supporting two modes of reclassification. Onemode—basedon the IEEE 802.1pstandard—honorstheclass-of-service(CoS) value at the ingress point and assigns the packet to the appropriate queue. In the second mode, packets can be reclassified based on a default CoS value assigned to the ingress port by the network administrator. In the case of frames that arrive without a CoS value (such as untagged frames), these Cisco Catalyst 2950 Series switches support classification based on a default CoS value per port assigned by the network administrator. After the frames have been classified or reclassified using one of the above modes, they are assigned to the appropriate queue at the egress. Cisco Catalyst 2950 Series switches support four egress queues, which allow the network administrator to be more discriminating and granular in assigning priorities for the various applications on the LAN. Strict Priority Scheduling configuration ensures thattime-sensitiveapplications, such as voice, always follow an expedited path through the switch fabric. Weighted Round Robin (WRR) scheduling, another significant enhancement, ensures thatlower-prioritytraffic receives attention without comprising the priority settings administered by a network manager. These features allow network administrators to prioritizemission-critical,time-sensitivetraffic, such as voice (IP telephony traffic), enterprise resource planning (Oracle, SAP, etc.), andcomputer-assisteddesign and manufacturing, over lesstime-sensitiveapplications such as FTP ore-mail(Simple Mail Transfer Protocol).

Network Availability

To provide efficient use of resources for bandwidth-hungryapplications like multicasts, Cisco Catalyst 2950 Series switches support Internet Group Management Protocol Version 3 (IGMPv3) snooping in hardware. Through the support and configuration of IGMP snooping through the Cisco CMS software, these Cisco Catalyst 2950 Series switches deliver outstanding performance and ease of use in administering and managing multicast applications on the LAN.

The IGMPv3 snooping feature allows the switch to “listen in” on the IGMP conversation between hosts and routers. When a switch hears an IGMP join request from a host for a given multicast group, the switch adds the host’s port number to the group destination address list for that group. And when the switch hears an IGMP leave request, it removes the host’s port from the content-addressablememory (CAM) table entry.

Multicast VLAN Registration (MVR) is designed for applications using wide-scaledeployment of multicast traffic across an Ethernetring-basedservice provider network (for example, the broadcast of multiple television channels over aservice-providernetwork). MVR allows a subscriber on a port to subscribe and unsubscribe to a multicast stream on the networkwide multicast VLAN.

Per VLAN Spanning Tree Plus (PVST+) allows users to implement redundant uplinks while also distributing traffic loads across multiple links. This is not possible with standard Spanning Tree Protocol implementations. Cisco UplinkFast technology ensures immediate transfer to the secondary uplink, much better than the traditional 30to 60-secondconvergence time. This is yet another enhancement of the Spanning Tree Protocol implementation. An

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additional feature that enhances performance is voice VLAN. This feature allows network administrators to assign voice traffic to a VLAN dedicated to IP telephony, thereby simplifying phone installations and providing easier network traffic administration and troubleshooting.

Network Management

Cisco Cluster Management Suite (CMS) is Web software that is embedded in Cisco Catalyst 3750, 3550, 2970, 2950, 2940, 3500 XL, 2900 XL, and 2900 LRE XL series switches. Through Cisco switch-clusteringtechnology, users access Cisco CMS software with any standard Web browser to manage up to 16 of these switches at once, regardless of their geographic proximityæwith the option of using a single IP address for the entire cluster if desired. Cisco CMS software supportsstandards-basedconnectivity options such as Ethernet, Fast Ethernet, Fast EtherChannel, Gigabit Ethernet, and Gigabit EtherChannel connectivity. Because Ciscoswitch-clusteringtechnology is not limited to a single stack of switches, Cisco CMS software expands the traditional cluster domain beyond a single wiring closet and saves time and effort for network administrators.

Cisco Catalyst 2950 Series switches can be configured either as command or member switches in a Cisco switch cluster. Cisco CMS also allows the network administrator to designate a standby or redundant command switch, which takes the commander duties should the primary command switch fail. Other key features include the ability to configure multiple ports and switches simultaneously, as well as perform software updates across the entire cluster at once, and clone configurations to other clustered switches for rapid network deployment. Bandwidth graphs and link reports provide useful diagnostic information, and the topology map gives network administrators a quick view of network status.

In addition to CMS, Cisco Catalyst 2950 Series switches provide extensive management tools using SNMP network management platforms such as CiscoWorks.

Cisco Catalyst 2950 Series switches deliver a comprehensive set of management tools to provide the required visibility and control in the network. Managed with CiscoWorks, Cisco Catalyst family switches can be configured and managed to deliver end-to-enddevice, VLAN, traffic, and policy management. Coupled with CiscoWorks, Cisco Resource Manager Essentials, aWeb-basedmanagement tool, offers automated inventory collection, software deployment, easy tracking of network changes, views into device availability, and quick isolation of error conditions.

Cisco Express Setup is a new feature that simplifies initial configuration of a switch. Users now have the option to set up the switch using a Web browser, eliminating the need for more complex terminal emulation programs and knowledge of CLI. Cisco Express Setup reduces the cost of deployment by enabling less-skilledpersonnel to set up switches quickly and simply.

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Product Features and Benefits

Feature

Benefit

 

 

Availability

 

 

 

Superior redundancy

• IEEE 802.1D Spanning Tree Protocol support for redundant backbone connections and

for fault backup

loop-freenetworks simplifies network configuration and improves fault tolerance.

 

• Support for Cisco Spanning Tree Protocol enhancements such as UplinkFast,

 

BackboneFast, and PortFast technologies ensures quick failover recovery and enhances

 

overall network stability and availability.

 

• Support for an optional 675W redundant Cisco AC power system provides a backup

 

power source for as many as four units or six units, respectively, for improved fault

 

tolerance and network uptime.

 

• Unidirectional link detection (UDLD) and aggressive UDLD detect and disable

 

unidirectional links on fiber-opticinterfaces caused by incorrectfiber-opticwiring or

 

port faults.

 

 

Integrated Cisco IOS

• Bandwidth aggregation through Cisco EtherChannel technology enhances fault tolerance

Software features

and offers higher-speedaggregated bandwidth between switches to routers and

for bandwidth

individual servers. Port Aggregation Protocol (PagP) is available to simplify configuration.

optimization

• VLAN1 minimization allows VLAN1 to be disabled on any individual VLAN trunk link.

 

Per-portbroadcast, multicast, and unicast storm control prevents faulty end stations from

 

degrading overall system performance.

 

• Per VLAN Spanning Tree Plus (PVST+) allows for Layer 2 load sharing on redundant links

 

to efficiently use 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.

 

• IGMPv3 snooping provides for fast client joins and leaves of multicast streams and limits

 

bandwidth-intensivevideo traffic to the requestors. MVR, IGMP filtering, andfast-joinand

 

immediate leave are available as enhancements.

 

 

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Feature

Benefit

 

 

 

 

 

 

Security

 

 

 

 

 

 

 

Networkwide

• A private VLAN edge provides security and isolation between ports on a switch, ensuring

 

 

security features

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

 

 

 

ports they are accessing, and it provides unique benefits to customers who have a large

 

 

 

base of mobile (wireless) users accessing the network.

 

 

 

• 802.1x with voice VLAN permits an IP phone access to the voice VLAN regardless of the

 

 

 

authorized or unauthorized state of the port.

 

 

 

• 802.1x with Port Security authenticates the port and manages 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 time 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 enables centralized control of the switch and

 

 

 

restricts 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.

 

 

 

 

 

 

Quality of Service

 

 

 

 

 

 

 

Layer 2 QoS

• Support for reclassifying frames is based either on 802.1p class-of-service(CoS) value or

 

 

 

default CoS value per port assigned by network manager.

 

 

 

• Four queues per egress port are supported in hardware.

 

 

 

• The Weighted Round Robin (WRR) scheduling algorithm ensures that low-priorityqueues

 

 

 

are not starved.

 

 

 

• Strict priority queue configuration via Strict Priority Scheduling ensures that

 

 

 

time-sensitiveapplications such as voice always follow an expedited path through the

 

 

 

switch fabric.

 

 

 

 

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Feature

Benefit

 

 

 

 

 

 

Management

 

 

 

 

 

 

 

Superior

• SNMP and Telnet interface support delivers comprehensive in-bandmanagement, and a

 

 

manageability

CLI management console provides detailed out-of-bandmanagement.

 

 

 

• An embedded Remote Monitoring (RMON) software agent supports four RMON groups

 

 

 

(history, statistics, alarms, and events) for enhanced traffic management, monitoring, and

 

 

 

analysis.

 

 

 

• A Switched Port Analyzer (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-Tindication, as well asswitch-levelstatus LEDs for system,

 

 

 

redundant power supply, and bandwidth utilization provide a comprehensive and

 

 

 

convenient visual management system.

 

 

 

• Crash information support enables a switch to generate a crash file for improved

 

 

 

troubleshooting.

 

 

 

Show-interface-capabilitiesprovide information about the configuration capabilities of

 

 

 

any interface.

 

 

 

• Response Time Monitoring (RTTMON) MIB allows users to monitor network performance

 

 

 

between a Cisco Catalyst switch and a remote device.

 

 

 

 

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Feature

Benefit

 

 

 

 

 

 

Cisco Cluster

• Cisco Cluster Management Suite (CMS) software allows the user to manage up to 16

 

 

Management Suite

interconnected Cisco Catalyst 3750, 2970, 2950, 2940, 3500XL, 2900XL, and 2900 LRE XL

 

 

 

series switches without the limitation of being 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 that any combination of the above switches can be managed with

 

 

 

a Cisco Catalyst 2950 Series Switch.

 

 

 

• Cisco AVVID (Architecture for Voice, Video and Integrated Data) wizards use just a few

 

 

 

user inputs to automatically configure the switch to optimally handle different types of

 

 

 

traffic: voice, video, multicast, and high-prioritydata.

 

 

 

One-clicksoftware upgrades can be performed across the entire cluster simultaneously,

 

 

 

and configuration cloning enables rapid deployment of networks.

 

 

 

• Cisco CMS Guide Mode helps users configure powerful advanced features by providing

 

 

 

step-by-stepinstructions.

 

 

 

• Cisco CMS provides enhanced online help for context-sensitiveassistance.

 

 

 

Easy-to-usegraphical interface provides both a topology map andfront-panelview of the

 

 

 

cluster.

 

 

 

• Cisco CMS Client Install improves the launch time of Cisco CMS by installing the software

 

 

 

files on the management station.

 

 

 

• Multideviceand multiport-configurationcapabilities allow network administrators to

 

 

 

save time by configuring features across multiple switches and ports simultaneously.

 

 

 

• Cisco CMS allows the launch of the Web-basedmanagement for a Cisco Aironet®

 

 

 

Wireless Access Point simply by clicking its icon in the topology map.

 

 

 

User-personalizedinterface allows users to modify polling intervals, table views, and

 

 

 

other settings within Cisco CMS and retain these settings the next time they use

 

 

 

Cisco CMS.

 

 

 

• Alarm notification provides automated e-mailnotification of network errors and alarm

 

 

 

thresholds.

 

 

 

• A Cisco CMS plug-inenables configuration of the management station with the correct

 

 

 

run-timesoftware.

 

 

 

 

 

 

Support for

• Manageability is enabled through CiscoWorks network management software on a

 

 

CiscoWorks

per-portandper-switchbasis, providing a common management interface for Cisco

 

 

 

routers, switches, and hubs.

 

 

 

• SNMPv1, v2, and v3 (non-crypto)and Telnet interface support delivers comprehensive

 

 

 

in-bandmanagement, and acommand-line-interface(CLI) management console provides

 

 

 

detailed out-of-bandmanagement.

 

 

 

• Cisco Discovery Protocol (CDP) versions 1 and 2 enable a CiscoWorks network

 

 

 

management station to automatically discover the switch in a network topology.

 

 

 

• Support is provided by the CiscoWorks LAN Management Solution.

 

 

 

 

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Feature

Ease of use and deployment

Benefit

Cisco Express Setup:

Simplifies initial configuration of a switch via a Web browser, eliminating the need for more complex terminal emulation programs and CLI knowledge.

Reduces the cost of deployment by enabling less-skilledpersonnel to set up switches quickly and simply.

Auto-configurationeases deployment of switches in the network by automatically configuring multiple switches across a network using a bootp server.

Autosensing on each port detects the speed of the attached device and automatically configures the port for 10or 100-Mbpsoperation, easing the deployment of the switch inmixed-speedenvironments.

Auto-negotiatingon all ports automatically selects halforfull-duplextransmission 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 EtherChannel and PagP.

Cisco Discovery Protocol 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 functions 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 memory ensures that the switch can be quickly connected to the network and can pass traffic with minimal user intervention.

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Product Specifications

Feature

Description

 

 

Performance

13.6-Gbpsswitching fabric

 

• Cisco Catalyst 2950-12:2.4-Gbpsmaximum forwarding bandwidth

 

• Cisco Catalyst 2950-24:4.8-Gbpsmaximum forwarding bandwidth

 

• Cisco Catalyst 2950SX-24:8.8-Gbpsmaximum forwarding bandwidth

 

• Cisco Catalyst 2950T-48:13.6-Gbpsmaximum forwarding bandwidth

 

• Cisco Catalyst 2950SX-48:13.6-Gbpsmaximum forwarding bandwidth

 

• (Forwarding rates based on 64-bytepackets)

 

• Cisco Catalyst 2950-12:1.8-Mppswire-speedforwarding rate

 

• Cisco Catalyst 2950-24:3.6-Mppswire-speedforwarding rate

 

• Cisco Catalyst 2950SX-24:6.6-Mppswire-speedforwarding rate

 

• Cisco Catalyst 2950T-48:10.1-Mppswire-speedforwarding rate

 

• Cisco Catalyst 2950SX-48:10.1-Mppswire-speedforwarding 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

 

 

Feature

Description/Part Numbers

 

 

 

 

Management

BRIDGE-MIB

CISCO-TC

 

CISCO-2900-MIB

CISCO-TCP-MIB

 

CISCO-BULK-FILE-MIB

CISCO-VLAN-MEMBERSHIP-MIB

 

CISCO-CDP-MIB

CISCO-VTP-MIB

 

CISCO-CLASS-BASED-QOS-MIB

ENTITY-MIB

 

CISCO-CLUSTER-MIB

IANAifType-MIB

 

CISCO-CONFIG-COPY-MIB

IF-MIB(RFC 1573)

 

CISCO-CONFIG-MAN-MIB

OLD-CISCO-CHASSIS-MIB

 

CISCO-ENVMON-MIB

OLD-CISCO-CPU-MIB

 

CISCO-FLASH-MIB

OLD-CISCO-INTERFACES-MIB

 

CISCO-FTP-CLIENT-MIB

OLD-CISCO-IP-MIB

 

CISCO-IMAGE-MIB

OLD-CISCO-MEMORY-MIB

 

CISCO-IPMROUTE-MIB

OLD-CISCO-SYSTEM-MIB

 

CISCO-MAC-NOTIFICATION-MIB

OLD-CISCO-TCP-MIB

 

CISCO-MEMORY-POOL-MIB

OLD-CISCO-TS-MIB

 

CISCO-PAGP-MIB

RFC1213-MIB(MIB-II)

 

CISCO-PING-MIB

RFC1398-MIB(ETHERNET-MIB)

 

CISCO-PROCESS-MIB

RMON-MIB(RFC 1757)

 

CISCO-PRODUCTS-MIB

RS-232-MIB

 

CISCO-RTTMON-MIB

SNMPv2-MIB

 

CISCO-SMI

SNMPv2-SMI

 

CISCO-STACKMAKER-MIB

SNMPv2-TC

 

CISCO-STP-EXTENSIONS-MIB

TCP-MIB

 

CISCO-SYSLOG-MIB

UDP-MIB

 

 

 

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Feature

Description/Part Numbers

 

 

 

 

 

 

 

 

 

 

Standards

• IEEE 802.1x support

 

 

 

 

 

• IEEE 802.3x full duplex on 10BASE-Tand100BASE-TXports

 

 

 

 

 

• IEEE 802.1D Spanning-TreeProtocol

 

 

 

 

 

• IEEE 802.1p class-of-service(CoS) prioritization

 

 

 

 

 

• IEEE 802.1Q VLAN

 

 

 

 

 

• IEEE 802.3 10BASE-Tspecification

 

 

 

 

 

• IEEE 802.3u 100BASE-TXspecification

 

 

 

 

 

• IEEE 802.3ad

 

 

 

 

 

• IEEE 802.3z 1000BASE-Xspecification

 

 

 

 

 

 

 

 

 

 

Connectors

10BASE-Tports:RJ-45connectors,two-pairCategory 3, 4, or 5 unshieldedtwisted-pair(UTP)

 

 

 

 

and cabling

cabling

 

 

 

 

 

100BASE-TXports:RJ-45connectors;two-pairCategory 5 UTP cabling

 

 

 

 

 

1000BASE-SXports:MT-RJconnectors, up to 1800 feet (550 meters) cable distance for 50/125

 

 

 

 

 

or up to 900 ft (275 m) cable distance for 62.5/125 micron multimode fiber-opticcabling

 

 

 

 

 

• Management console port: 8-pinRJ-45connector,RJ-45-to-DB9adapter cable for PC

 

 

 

 

 

connections; for terminal connections, use RJ-45-to-DB25femaledata-terminal-equipment

 

 

 

 

 

(DTE) adapter (can be ordered separately, Cisco part number ACS-DSBUASYN=)

 

MT-RJpatch cables for Cisco Catalyst2950SX-24Switch

Type of cable, Cisco part number:

1-meterMT-RJ-to-SCmultimode cable,CAB-MTRJ-SC-MM-1M

3-meterMT-RJ-to-SCmultimode cable,CAB-MTRJ-SC-MM-3M

5-meterMT-RJ-to-SCmultimode cable,CAB-MTRJ-SC-MM-5M

1-meterMT-RJ-to-STmultimode cable,CAB-MTRJ-ST-MM-1M

3-meterMT-RJ-to-STmultimode cable,CAB-MTRJ-ST-MM-3M

5-meterMT-RJ-to-STmultimode cable,CAB-MTRJ-ST-MM-5M

Power

Customers can provide power to a switch by using the internal power supply, the Cisco RPS 675

connectors

Redundant Power System. The connectors are located at the back of the switch.

 

Internal power supply connector:

 

• The internal power supply is an auto-rangingunit.

 

• 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 675 connector:

 

• The connector offers connection for an optional Cisco RPS 675 that uses AC input and supplies

 

DC output to the switch.

 

• The connector offers a 675W redundant power system that supports 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 675 (Model PWR675-AC-RPS-NI=)to the redundant power supply

 

receptacle with this connector.

 

 

Indicators

Per-portstatus LEDs: link integrity, disabled, activity, speed, andfull-duplexindications

 

• System status LEDs: system, RPS, and bandwidth-utilizationindications

Dimensions and weight (H x W x D)

1.72 x 17.5 x 9.52 in. (4.36 x 44.45 x 24.18 cm) (Cisco Catalyst 2950SX-24,2950-24,2950-12)

1.72 x 17.5 x 13 in. (4.36 x 44.45 x 33.02 cm) (Cisco Catalyst 2950SX-48,2950T-48)

1 RU high (1.72 in./4.36 cm)

6.5 lb (3.0 kg) (Cisco Catalyst 2950SX-24,2950-24,2950-12)

10.b lb (4.8 kg) (Cisco Catalyst 2950SX-48,2950T-48)

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Feature

Description/Part Numbers

 

 

 

 

 

 

Environmental

• Operating temperature: 32 to 113 F (0 to 45 C)

 

 

ranges

• Storage temperature: –13to 158 F(–25to 70 C)

 

 

 

• Operating relative humidity: 10–85%(non-condensing)

 

 

 

• Operating altitude: Up to 10,000 ft (3000 m)

 

 

 

• Storage altitude: Up to 15,000 ft (4500 m)

 

 

 

 

 

 

Power

• Power consumption: 30W (maximum), 102 BTUs per hour (Cisco Catalyst 2950SX-24,2950-24.

 

 

requirements

2950-12)

 

 

 

• Power consumption: 45W (maximum), 154 BTUs per hour (Cisco Catalyst 2950T-48,2950SX-48)

 

 

 

• AC input voltage: 100 to 127, 200 to 240 VAC (auto-ranging)

 

 

 

• AC input frequency: 47 to 63 Hz

 

 

 

• DC input voltages for Cisco RPS 675 and Cisco RPS 300: +12V at 4.5A

 

 

 

 

 

 

Acoustic noise

ISO 7770, bystander position, operating to an ambient temperature of 86 F (30 C):

 

 

Predicted mean

WS-C2950-24,WS-C2950-12,WS-C2950SX-24:46 dBa

 

 

time between

WS-C2950T-48-SI,WS-C2950SX-48-SI:48 dBa

 

 

failure

 

 

• 268,292 hours (Cisco Catalyst 2950-24)

 

 

 

 

 

 

• 318,440 hours (Cisco Catalyst 2950-12)

 

 

 

• 403,214 hours (Cisco Catalyst 2950SX-24)

 

 

 

• 268,876 hours (Cisco Catalyst 2950T-48-SI)

 

 

 

• 274,916 hours (Cisco Catalyst 2950SX-48-SI)

 

 

 

 

 

Regulatory Agency Approvals

 

 

 

 

 

 

Safety

• UL 60950/CSA 22.2 No. 950

 

 

certifications

• IEC 60950/EN 60950

 

 

 

• AS/NZS 3260, TS001

 

 

 

• CE Marking

 

 

 

 

 

 

Electromagnetic

• FCC Part 15 Class A

 

 

emissions

• EN 55022: 1998 (CISPR 22) Class A

 

 

certifications

• EN 55022: 1998 (CISPR 22)

 

 

 

 

 

 

• VCCI Class A

 

 

 

• AS/NZS 3548 Class A

 

 

 

• CE Marking

 

 

 

• CNS 13438 Class A

 

 

 

• CLEI Code

 

 

 

• MIC

 

 

 

 

 

 

Warranty

• Lifetime limited warranty

 

 

 

 

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Page 13 of 15

Service and Support

The services and support programs described here are available as part of the Cisco Desktop Switching Service and Support solution and are available directly from Cisco Systems® and through resellers.

Service and Support

Features

Benefits

 

 

 

 

Advanced Services

 

 

 

 

 

 

Total Implementation

• Project management

• Supplements existing staff

Solutions (TIS)—Available

• Site survey, configuration deployment

• Ensures that functions meet needs

direct from Cisco

Installation, text, and cutover

• Mitigates risk

 

Packaged Total

Training

 

• Major moves, adds, changes

 

Implementation Solutions

 

• Design review and product staging

 

(Packaged TIS)—Available

 

 

 

 

through resellers

 

 

 

 

 

 

 

Technical Support Services

 

 

 

 

 

 

Cisco SMARTnet® services

Around-the-clockaccess to software

• Enables proactive or expedited

and Cisco SMARTnet

 

updates

issue resolution

Onsite services—Available

• Web access to technical repositories

• Lowers cost of ownership by using

direct from Cisco

• Telephone support through the Technical

Cisco expertise and knowledge

 

 

Assistance Center

• Minimizes network downtime

Packaged Cisco SMARTnet

• Advance replacement of hardware parts

 

services—Available

 

 

 

through resellers

 

 

 

 

 

 

 

Ordering Information

Model Numbers

Configuration

 

 

WS-C2950-12

• 12 10/100-Mbpsports

 

1-RUstandalone,fixed-configuration,managed10/100-Mpbsswitch

 

• Standard Image (SI) Software

 

 

WS-C2950-24

• 24 10/100-Mpbsports

 

1-RUstandalone,fixed-configuration,managed10/100-Mbpsswitch

 

• Standard Image (SI) Software

 

 

WS-C2950SX-24

• 24 10/100-Mpbsports with two fixed1000BASE-SXuplinks

 

1-RUstandalone,fixed-configuration,managed10/100-Mbpsswitch

 

• Standard Image (SI) Software

 

 

WS-C2950T-48-SI

• 48 10/100-Mbpsports with two fixed10/100/1000BASE-Tuplinks

 

1-RUstandalone,fixed-configuration,managed10/100-Mbpsswitch

 

• Standard Image (SI) Software

 

 

WS-C2950SX-48-SI

• 48 10/100-Mbpsports with two fixed1000BASE-SXuplinks

 

1-RUstandalone,fixed-configuration,managed10/100-Mbpsswitch

 

• Standard Image (SI) Software

 

 

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For More Information

For more information about Cisco products, contact:

United States and Canada: 800 553-NETS(6387)

Europe: 32 2 778 4242

Australia: 612 9935 4107

Other: 408 526-7209

World Wide Web: http://www.cisco.com