Ethernet Network Switch

Network Switch Selection - How to Select a Network Switch

Overview

The network switch is the most common network device with most network infrastructure and as such selection of new switches or upgrading is a key part of most network design projects. Wireless designs will have switches interfacing with access points. That will in some cases have an affect on the switch such as increased utilization, assigned switch ports, access lists, trunking, Power over Ethernet (PoE) wattage draw or spanning tree protocol. The decision to buy new switches or upgrade will be determined after considering the network assessment and design features specified. The 5 network switch components include switch chassis, supervisor engine, switching modules, power supplies and IOS/Cat OS software.

Switch Chassis Features

The Switch Chassis features include - dimensions, number of slots, processor slot assignments, switching fabric, supervisor engines supported, supervisor engine diversity, power supplies, power supply failover, rack units.

Supervisor Engine Features

Switches are implemented with a Supervisor Engine (Switch Processor) for processing packets on a network segment. Routing is available with an onboard Multi Layer switch feature card (MSFC) or route processor running IOS code. The network switch Supervisor Engine running IOS code on the MSFC and the switch processor is in native mode, while those running Cat OS on the processor is in hybrid mode. Some engines won't support native and hybrid mode. The engine with no MSFC supports what is called Cat OS mode. Select the engine that matches design specifications. The MSFC module is integrated with the Supervisor Engine or upgradeable. You must implement a PFC module with any MSFC. Some Supervisor Engines have no MSFC module. The routing is integrated with the hardware and as such support native mode only.

The Supervisor Engine features include - supported switch chassis, uplink speed, processor memory, native IOS, Cat OS, PFC, MSFC, slot assignment, diversity.

- Supervisor Engine 720: 6500 series switches, 400 mpps, MSFC3, IOS, Cat OS

- Supervisor Engine 32: 6500 series switches, 15 mpps, MSFC2A, IOS, Cat OS

- Supervisor Engine 5: 4500 series switches, 72 mpps, Integrated Routing, IOS

- Supervisor Engine 4: 4500 series switches, 48 mpps, Integrated Routing, IOS

Switching Module Features

The Switching Module features include - supported switch chassis, interface speed, number of ports, media, cabling, connectors, throughput, Supervisor Engine supported, protocol features, Power over Ethernet, Cisco Prestandard or 802.3af.

- Media: Copper, Fiber

- Cabling: UTP Cat 5, CAT 5e, CAT 6, STP, MMF, SMF

- Connectors: RJ45, RJ21, SC, LC

- Transceivers: GBIC, SFP

Power Supply Features

The Power Supply features include - supported chassis, wattage ratings, Power over Ethernet, input/output amps, power cord type, IOS, Cat OS.

IOS/Cat OS Software

Cisco network switches can be deployed with IOS, IOS and Cat OS or exclusive Cat OS software. Design features will determine what mode and IOS or Cat OS version is selected. The software running on the Route Processor must be IOS while the Supervisor Engine switch processor will run IOS (native mode) or Cat OS (hybrid mode). Some Cisco equipment such as the 4507R deploy the Supervisor Engine IV with no MSFC onboard. The routing processor is integrated with the engine. With that design, the Supervisor Engine IV doesn't support Cat OS.

- Native IOS - deployed at the network edge where most routing occurs and needs some switching

- Hybrid - deployed at the network core where there is routing and high speed switching

- Cat OS - deployed at the network access layer where most switching and no routing occurs

Switch Selection Process

The following describes the 5 components of any network switch selection process.

1. Consider Network Assessment and Design

2. Select Switches with Design Features

3. Select Switches with Scalability

4. Balance Cost with Features

5. Select IOS and/or Cat OS Version

The network assessment and design specifications should be considered before selecting any specific network switches. The network assessment examines what is implemented and what environment the selected device will be deployed. The design specifications will determine performance, availability and scalability features needed. Selecting IOS and/or Cat OS versions occur after you have the feature set determined. Companies will specify a budget and that is a key consideration with any equipment selection. It isn't cost effective to select a Cisco 6509 for an office with 50 employees. It is important that you select equipment that meet the design specifications, has the scalability features needed while meeting budget guidelines.

Some typical switch features to consider:

1) Are there enough chassis slots?

2) What Supervisor Engines are supported?

3) Does the Supervisor Engine support failover?

4) Is Multi Layer Switching available?

5) What Switching Modules are available?

6) What Uplinks are available?

7) What Power Supply wattage is available?

Number of Rack Units?

Switch Selection Example:

The Network Assessment discovered the following equipment at the company office.

· Distribution office has 300 employees

· Fast Ethernet implemented at the Desktop

· 6509 Cisco Switches with Gigabit Ethernet Trunking

· 3800 Cisco Router with dual T1 circuits

· Power over Ethernet is implemented

· Multiple VLANS defined

· Local Unix and Windows Servers

· Some bandwidth intensive applications

· Voice over IP is implemented

· Wiring closets are 500 feet apart

· Several rack units are available

The design specifies an additional 180 people will be employed soon. The company will have employees working from a third floor where the wiring closet is 500 feet from the 6509. The company will implement some Wireless, IP Telephony and define VLANS with specified groups.

The following is a list of specific features needed:

1. 4 chassis slots with Switching Modules of 48 Port - 10/100BaseT

2. Gigabit Trunking between wiring closets

3. Supervisor Engines with failover

4. Multi Layer Switching

5. Power over Ethernet support

6. Dual Power Supplies with at least 2800W for IP Telephony

7. Quality of Service for VoIP

8. Performance switching for converged telephony network

Selected Switch: Cisco 4507R

The 7 slot switch such as the Cisco 4507R is a good selection with an additional 180 employees. The device will have 4 - 48 port Modules with a slot available for any additional employees. The dual Supervisor Engines IV will be assigned 2 slots with failover, Multi Layer Switching between VLANS and Gigabit uplinks connecting the 6509 devices. Each of the switching module are PoE capable with the new 802.3af standard. Dual power supplies provide enough wattage for implementing hundreds of Cisco IP phones and access points. The performance is 75 mpps with wire speed switching. The 4507R is more cost effective than the nearest 6509 Cisco device. Several Supervisor Engine models are available with additional performance features.

- 7 slot chassis with 2 Supervisor Engines and 4 Switching Modules with 48 Port - 10/100BaseT

- Supervisor Engine IV with integrated Multi Layer Switching, diversity, dual Gigabit uplinks

- Power over Ethernet (PoE) support with 802.3af standard

- Dual Power Supplies with 2800W or 4200W for Telephony, Wireless, Power over Ethernet

- Quality of Service features for voice traffic

- Fast performance with 75 mpps wire speed switching for converged networking

The 3750 series Cisco switch wasn't as expensive however there were not enough slots, stacking technology is expensive and switches at 38.7 mpps compared with the 4507R device at 75 mpps. The company would have to buy 5 separate switches with 48 ports for 180 employees. The 2950 Cisco switch doesn't have power supply failover and scalability. The 6509 switch was much more expensive, had 2 additional slots, more performance than was needed and the switching modules were expensive. Implementation is somewhat difficult with the 6500 Cisco devices.

Shaun Hummel is the author of Network Planning and Design Guide and has a web site focused on information technology job search solutions, web conferencing and online technical interviews.

http://www.networkjobsolutions.com

 

 

About the Author

Shaun Hummel, CCNP, is a Senior Network Engineer with 11 years experience in enterprise network planning, design, and implementation. He has worked for various private and public companies in Canada and the United States improving infrastructure, security, and management. He has written Network Planning and Design Guide, Cisco Wireless Network Design Guide and Network Assessment Guide.

www.networkjobsolutions.com

Juniper Network Switch 24-Ports Ethernet 10Base-T/100Base-TX/1000Base-T EX3200 $2312.5 Juniper Network Switch 24-Ports Ethernet 10Base-T/100Base-TX/1000Base-T EX3200

NETGEAR PROSAFE 24-Port Ethernet Switch $104.99 Equip your office network with Ethernet connectivity using this Ethernet switch that lets you connect up to 24 computers to the Internet.

Monster 5-Port 10/100 Ethernet Switch $49.99 Easily network computers, networkable media components and other Ethernet-enabled devices in your home with this 5-port Ethernet switch.

10/100Mbps Fast Ethernet Network Switch 5 Port $23.49 Description:5-port 10/100Mbps Ethernet Switch provides 5 10/100Mbps Auto-Negotiation RJ45 ports.Simple plug and play installation and use.The Network Ethernet Switch is Plug-and-Play and each port can be used as general ports or Uplink ports and can be simply plugged into a server, a hub or a switch, using straight cable or crossover cable.10/100Mbps Ethernet Switch provides you with a low-cost, easy-to-use, high-performance, seamless and standard upgrade to improve your old network to a 100Mbps network.Easy to use with built-in error detection and correction.Fast Ethernet Switch will boost your network performance up to full duplex data transfer.Suitable for desktop use. Ideal for small office, home office.Specification:Complies with IEEE802.3u 100base-TX, IEEE802.3 10Base-TX, IEEE802.3 10base-T Ethernet.10/100Mbps RJ-45 Port fast ethernet switch.Supply full/half-duplex, transmission modelFull-duplex: IEEE802.3X, Half-duplex: Back pressure1K MAC address tableyCome with a AC-DC adapter(Input: 220VAC-50Hz. Output: 7.5V DC, 1000mA)Size: L91 x W81 x H22mmWeight: 454gPackage included:1 x 5 Port Ethernet Switch1 x AC-DC Adapter(two pin plug)

Belkin F5D5131-8 Ethernet Switch $49.99 1 K MAC Address - Unicast 10/100Base-TX 8 Access Method: CSMA/CD Unlimited Multicast MAC Addresses Max Frame: 1536 Bytes Belkin 8-Port 10/100Mbps Network Switch One Power Supply Quick Installation Guide IEEE 802.3: 10Base-T Ethernet IEEE 802.3u: 100Base-Tx fast Ethernet Power LAN link (10/100) LAN activity You can now enjoy the benefits of sharing one Internet account, as well as your printers and peripherals, and you can exchange data quickly between connected computers. Your new Belkin 8-Port Network Switch (the Switch) will enable communication via e-mail and the Internet for all your connected computers. The Network Switch can be used to connect PCs, additional switches, gateway routers, and other networking components. Belkin Belkin International, Inc Ethernet Switch F5D5131-8 F5D5131-8 Ethernet Switch Lifetime Not Applicable Twisted Pair Yes www.belkin.com

CP TECH FSW-0811 Ethernet Switch $19.99 1.08" Height x 3.35" Width x 5.55" Depth 10/100Base-TX 2 8 8 x RJ-45 10/100Base-TX LAN 9 V DC FSW-0811 Ethernet Switch Power Adapter User Manual Wall-Mounting Kit FSW-0811 8-port Fast Ethernet Switch is an easy to install plug-and-play switch, allowing users to either create a Local Area Network (LAN) or connect additional network devices, such network cameras, storage devices or print servers, to an established network. AC Adapter CP TECH CP Technologies Desktop Ethernet Switch FSW-0811 FSW-0811 Ethernet Switch Wall-mountable Yes www.cptechusa.com

Intellient Network Solutions 523318 Fast Ethernet Office Switch $54.03 Easily add more computers or other Ethernet devices to your network. The INTELLINET NETWORK SOLUTIONS 8-Port Fast Ethernet Office Switch is perfect for the small and medium-size business looking a durable switch that is reliable and easy to install. The metal case is more durable than a plastic enclosure, and is very appropriate for locations with potentially harsh environments, such as a warehouse, factory or wiring closet. Manufacturer: Intellinet Network Solutions Manufacturer Part Number: 523318 Manufacturer Website Address: www.intellinet-network.com Brand Name: Intellinet Network Solutions Product Model: 523318 Product Name: 523318 Fast Ethernet Office Switch Product Type: Ethernet Switch Media & Performance: Ethernet Technology: Fast Ethernet Media & Performance: Network Technology: 10/100Base-TX Physical Characteristics: Form Factor: Desktop Package Contents: 523318 Fast Ethernet Office Switch External Power Adapter User manual Warranty: Standard Warranty: Lifetime

8 Port Rectangular Ethernet Network Switch With US Plug $27.49 Description: 8-port 148,800pps/100Mbps Ethernet Switch provides 8 10/100Mbps Auto-Negotiation RJ45 ports.Simple plug and play installation and use.The Ethernet Network Switch is Plug-and-Play and each port can be used as general ports or Uplink ports and can be simply plugged into a server, a hub or a switch, using straight cable or crossover cable.10/100Mbps 8 Port Ethernet Switch provides you with a low-cost, easy-to-use, high-performance, seamless and standard upgrade to improve your old network to a 100Mbps network.US Plug Ethernet Switch will boost your network performance up to full duplex data transfer.Easy to use with built-in error detection and correction.Suitable for desktop use. Ideal for small office, home office.Specification:Complies with IEEE802.3u 100base-TX, IEEE802.3 10Base-TX, IEEE802.3 10base-T Ethernet.10/100Mbps fast ethernet switch.Store-and forward switching improves overall network performance.Support full-duplex switching bandwidth modes, allowing data rates of 10,20 and 100Mbps.Provides packet switching functions between 5,8,16,24 10/100Mbps Ethernet ports.10/100Mbps auto-sensing and negotiation allows flexibility between networking devices.External Power Adapter supplyCome with a AC-DC adapter(Input: 100V-240V-50/60Hz. Output: 9.0V DC, 500mA)Size: L161 x W93 x H23mmWeight: 364gPackage included:1 x Rectangular Ethernet Switch1 x AC-DC Adapter(US plug)

CP TECH FSW-0511 Ethernet Switch $16.99 10/100Base-TX 12 V DC 2 27.50" Height x 85" Width x 11.75 ft Depth 5 5 x RJ-45 10/100Base-TX LAN FSW-0511 Ethernet Switch Power Adapter User Manual Wall-Mounting Kit FSW-0511 Ethernet Switch is a compact 5-port Fast Ethernet Switch. It is a high performance, cost-effective and easy to use network switch for expanding home and office networks. AC Adapter CP TECH CP Technologies Desktop Ethernet Switch FSW-0511 FSW-0511 Ethernet Switch Wall-mountable Yes www.cptechusa.com

Belkin F5D5131-5 Ethernet Switch $44.99 1 K MAC Address - Unicast 10/100Base-TX 5 Access Method: CSMA/CD Unlimited Multicast MAC Addresses Max Frame: 1536 Bytes Belkin 5-Port 10/100Mbps Network Switch One Power Supply Quick Installation Guide IEEE 802.3: 10Base-T Ethernet IEEE 802.3u: 100Base-Tx fast Ethernet Power LAN link (10/100) LAN activity Ideal for dial-up Internet connections, these Switches provide the backbone for sharing e-mail, printers, files, multiplayer games and hard drives. One computer connects to the modem and the Switch, to become the Internet access point for all your connected computers. Using Internet Connection Sharing Software, you can now share your dial-up Internet access with up to four additional computers. Expanding your network is easy simply add more Switches through the featured uplink port. Belkin Belkin International, Inc Charcoal Gray Ethernet Switch F5D5131-5 F5D5131-5 Ethernet Switch Lifetime Limited Not Applicable Twisted Pair Yes www.belkin.com

Zyxel GS2200-48 Ethernet Switch $962.99 (2 Total) SFP (mini-GBIC) (4 Total) SFP (mini-GBIC) Shared 1 x RS-232C Console Management 10/100/1000Base-T 100 Gbps 100 V AC to 240 V AC 110 V AC 17.50" Height x 14.37 ft Width x 118" Depth 2 220 V AC 48 48 x RJ-45 10/100/1000Base-T Network LAN 6 74.4 Mpps 8.82 lb Web based management Command line interface IEEE 802.1Q VLAN IEEE 802.1p QoS Telnet SNMP v1, v2, v3 DHCP RMON groups 1, 2, 3, 9 ZyXEL's Switch GS2200-48 incorporates a high-performance switching architecture that provides 100 Gbps non-blocking switch fabric, 74.4 million packets per-second forwarding rate and wire-speed performance to connect high performance desktop devices with resources at the heart of the network. For branch offices and SME users, the GS2200-48 enables the delivery of converged applications and adapts to changing business needs with flexible configurations. In addition, the ZyXEL GS2200-48 is optimised for high-density Gigabit Ethernet deployments. With the range of switches meeting the business needs whether deployed at the edge, distribution or core of the network. Ethernet Switch GS2200 GS2200-48 GS2200-48 Ethernet Switch Lifetime Power Supply RoHS Yes Zyxel Zyxel Communications Corp. www.us.zyxel.com

D-Link Ethernet Switch $123.99 -14°F (-25.6°C) to 158°F (70°C) Storage 10% to 90% Operating 10/100/1000Base-T 10/100Base-TX 100 V AC to 240 V AC 110 V AC 220 V AC 24 32°F (0°C) to 122°F (50°C) Operating 6.17 lb 7.87" Height x 17.32" Width x 1.73" Depth CE Mark Class A FCC Class A VCCI-A 802.3 Ethernet 802.3u Fast Ethernet 802.3ab Gigabit Ethernet 802.1d, Spanning Tree Protocol 802.3x Flow Control Power (per unit) Link/Activity (per port) D-Link D-Link Systems, Inc DES-1026G Ethernet Switch Lifetime Limited Maximize your network potential with this feature-rich, high-performance switch. Efficiently migrate your network to Gigabit speed with the DES-1026G unmanaged 24-Port 10/100 plus 2-Port 10/100/1000 Switch. This switch delivers a combination of Ethernet, Fast Ethernet, and Gigabit solutions, all in one compact solution. Remove server bottlenecks, extend the network's size, and speed up access time for all your users in just one move. The non-blocking architecture of DES-1026G's enables optimal wire-speed network processing, while data flow control filters out faulty packets, minimizing their propagation. In addition, easy-to-read, front LED's show ongoing switch status and simplify troubleshooting. A reliable, easy-to-use solution with hassle-free setup and no configuration required. Twisted Pair 10/100/1000Base-T UTP 10/100Base-TX Yes www.dlink.com

NETGEAR PROSAFE 24-Port Gigabit Ethernet Switch $259.99 Connect the computers in your office with this rackmount Gigabit Ethernet switch that features auto sensing to easily adjust to your specific network.

Asus / Asus Network Switch GX1005B 5Port Desktop Unmanaged Fast Ethernet Retail / GX1005B $25.8 Asus - Asus Network Switch GX1005B 5Port Desktop Unmanaged Fast Ethernet Retail - GX1005B

TP-Link / TP-Link Network TL-SF1016DS Switch 16 Port 10/100Mbps Fast Ethernet Unmanaged Retail / TL-SF1016DS $51.95 TP-Link - TP-Link Network TL-SF1016DS Switch 16 Port 10/100Mbps Fast Ethernet Unmanaged Retail - TL-SF1016DS

Keebox / Keebox Network SFE05 5 x Port 10/100Mbps Fast Ethernet Switch Retail / SFE05 $21.44 Keebox - Keebox Network SFE05 5 x Port 10/100Mbps Fast Ethernet Switch Retail - SFE05

Keebox / Keebox Network SGE05 5 x Port 10/100/1000Mbps Gigabit Ethernet Switch Retail / SGE05 $32.22 Keebox - Keebox Network SGE05 5 x Port 10/100/1000Mbps Gigabit Ethernet Switch Retail - SGE05

Keebox / Keebox Network SFE08 8 x Port 10/100Mbps Fast Ethernet Switch Retail / SFE08 $25.24 Keebox - Keebox Network SFE08 8 x Port 10/100Mbps Fast Ethernet Switch Retail - SFE08

Keebox / Keebox Network SGE08 8 x Port 10/100/1000Mbps Gigabit Ethernet Switch Retail / SGE08 $41.04 Keebox - Keebox Network SGE08 8 x Port 10/100/1000Mbps Gigabit Ethernet Switch Retail - SGE08

Asus / Asus Network Switch GX1008B 8Port Desktop Unmanaged Fast Ethernet Retail / GX1008B $28.33 Asus - Asus Network Switch GX1008B 8Port Desktop Unmanaged Fast Ethernet Retail - GX1008B

Cisco EtherSwitch Network Module Switch 16-Ports Fast Ethernet 10Base-T 100Base-TX + 1x1000Base-T Plug-in Module NM16ESW1GIG $1279.44 Cisco EtherSwitch Network Module Switch 16-Ports Fast Ethernet 10Base-T 100Base-TX + 1x1000Base-T Plug-in Module NM16ESW1GIG

Cisco Catalyst Ethernet Switch 24-Ports 2 Slot 24 10/100/1000BASE-T 2 X Network Module WSC3750X24PS $3202.4 Cisco Catalyst Ethernet Switch 24-Ports 2 Slot 24 10/100/1000BASE-T 2 X Network Module WSC3750X24PS

Cisco Ethernet Switch 48-Ports 2 Slot 48 10/100/1000Base-T 2 X Network Module WSC3750X48TL $4022.18 Cisco Ethernet Switch 48-Ports 2 Slot 48 10/100/1000Base-T 2 X Network Module WSC3750X48TL

Cisco Catalyst Ethernet Switch 48-Ports 2 Slot 48 10/100/1000BASE-T 2 X Network Module WSC3560X48TS $3292.1 Cisco Catalyst Ethernet Switch 48-Ports 2 Slot 48 10/100/1000BASE-T 2 X Network Module WSC3560X48TS

IC Intracom USA, Inc INTELLINET Network Solutions 524162 Ethernet Switch - 24 Port $176.79 IC Intracom USA, Inc INTELLINET Network Solutions 524162 Ethernet Switch - 24 Port

IC Intracom USA, Inc INTELLINET Network Solutions 560405 Ethernet Switch - 16 Port $174.44 IC Intracom USA, Inc INTELLINET Network Solutions 560405 Ethernet Switch - 16 Port

IC Intracom USA, Inc INTELLINET Network Solutions 524124 Ethernet Switch - 8 Port $49.74 IC Intracom USA, Inc INTELLINET Network Solutions 524124 Ethernet Switch - 8 Port

IC Intracom USA, Inc INTELLINET Network Solutions 530347 Ethernet Switch - 8 Port $53.71 IC Intracom USA, Inc INTELLINET Network Solutions 530347 Ethernet Switch - 8 Port

Intel IXM5414E Blade Ethernet Switch $1053 The Intel Blade Server Chassis SBCE provides integrated Ethernet support through one or two Gigabit (Gb) Ethernet switches (the Intel Server Switch Module). By integrating Ethernet switches into the blade chassis Intel dramatically reduces cabling and the management and service workload in large data centers. Ethernet switch management becomes part of basic server operations. Simply log into a single management console to manage Ethernet switches and eliminate the jumble of cables associated with conventional switches.The 4port Intel Blade Server Switch Module provides highspeed Ethernet connections between each of the 14 blade servers and the outside network environment. The first switch module connects to the first Ethernet on each blade server in the chassis. To double the bandwidth install a second Intel Blade Server Switch Module. When using the Intel Blade Server Ethernet Expansion Card you can add two more Ethernet channels to each Intel Server Compute Blade. Use this flexible expandable fabric for building networkattached storage (NAS) solutions of for additional network bandwidth and redundancy. Cabling Type Ethernet 1000BaseT Ethernet 100BaseTX Ethernet 10BaseT. Compliant Standards: IEEE 802.1D IEEE 802.1p IEEE 802.1Q IEEE 802.3 IEEE 802.3ab IEEE 802.3ad (LACP) IEEE 802.3u IEEE 802.3x IEEE 802.3z. Connectivity Technology Wired. Data Link Protocol Ethernet Fast Ethernet Gigabit Ethernet. Data Transfer Rate 1 Gbps. Form Factor: Plugin module. MAC Address Table Size: 28K entries. Ports: Qty 4. Remote Management Protocol: HTTP RMON SNMP 1 Telnet. Subcategory (FE) Network hubs and switches. Switching Protocol: Ethernet. Type: Switch. Connector Type: RJ45. Interface Ethernet: 10BaseT/100BaseTX/1000BaseT. Type: Network.

Netgear ProSafe 16-Port Fast Ethernet Switch $81.99 10/100Base-TX 16 16 x RJ-45 10/100Base-TX Network LAN 2 QoS VLAN Ethernet Switch FE116E-100NAS Netgear Netgear, Inc ProSafe ProSafe 16-Port Fast Ethernet Switch Yes www.netgear.com

StarTech.com 8-port Fast Ethernet Switch $51.93 This 8 Port 10/100 Fast Ethernet Switch is a perfect addition to networks requiring an extension of connection distances, network traffic segmenting or bridging 10BaseT and 100BaseTX networks together. Providing not only superb performance and versatility, this Gigabit Ethernet Switch also features LED indicators that offer simple monitoring of network connections, activity, collisions, and operating mode (full or half duplex), to ensure ideal network efficiency and reliability. Manufacturer: StarTech.com Manufacturer Part Number: DS8107 Manufacturer Website Address: www.startech.com Brand Name: StarTech.com Product Name: 8-Port Fast Ethernet Switch Product Type: Ethernet Switch Media & Performance: Ethernet Technology: Fast Ethernet Media & Performance: Network Technology: 10/100Base-TX Physical Characteristics: Form Factor: Wall Mountable Package Contents: 8 Port 10/100 Fast Ethernet Switch 1 x Power Adapter 1 x Instruction Manual Green Compliant: Yes Green Compliance Certificate/Authority: RoHS

CNet CSH-800 Fast Ethernet Switch $23.99 0.98" Height x 5.70" Width x 3.40" Depth 10/100Base-TX 148810pps Forwarding Rate For 100 Mbps Ethernet 14881pps Forwarding Rate For 10 Mbps Ethernet 2 8 9 CNet's CSH-800 is a powerful Eight (8) 10/100Mbps ports Fast Ethernet Switch. Every port is equipped with a Built-In Auto-Negotiation function. Simply attach a network device to any port and the port will automatically set to operate at the fastest possible speed. CSH-800 is 100% Plug & Play and require no configuration. The new CNet switch is fully compliant to IEEE 802.3u and IEEE 802.3 standards for Fast Ethernet and Ethernet operation. AC Adapter CNet CNet Technology, Inc CSH-800 CSH-800 Fast Ethernet Switch Category 3, 4, 5 Twisted Pair 10Base-T Category 5 Twisted Pair 100Base-TX Ethernet Switch Yes www.cnetusa.com

HP E4210-16-PoE Ethernet Switch $784.99 1.70" Height x 11.80" Width x 10.80" Depth 2 6 lb Web-based administration Command Line Interface SNMP v1, v2c, and v3 RMON VLAN QoS HP E4210 Switch Series are entry level 10/100 Ethernet LAN switches with enterprise-class QoS, security, and management features, delivering high value for network administrators looking for an economical edge device. Available Power over Ethernet (PoE) models are ideal for voice over IP and wireless networking installations; non-PoE models are also available for simple port expansion. Dual-personality ports allow flexibility, setting them apart from lower-end devices, the series supports an industry-standard Command Line Interface, Web-based administration, and SNMP management. Switches can be clustered in any combination up to 255 units for simplified administration. In addition to rack-mount models, HP E4210 switches are available in small form factor units for enterprise branch and small workgroup deployments, in both PoE and non-PoE variants, with the same manageability as the larger rack-mount versions. E4210 E4210-16-PoE E4210-16-PoE Ethernet Switch Ethernet Switch HP Hewlett-Packard JE031A#ABA Lifetime Rack-mountable RoHS Yes www.hp.com

ProCurve 2520-24-PoE Ethernet Switch $2043.78 The HP ProCurve 2520 Switch Series is ideally suited for small and medium businesses looking to deploy voice, video, and/or wireless solutions that require Power over Ethernet (PoE) connectivity. The series consists of four switches: the HP ProCurve 2520-8-PoE, the HP ProCurve 2520-24-PoE, the HP ProCurve 2520G-8-PoE, and the HP ProCurve 2520G-24-PoE Switch. The four models offer a choice of either Fast Ethernet or Gigabit connectivity. All models also include support for dual-personality Gigabit ports that can be used for either copper or fiber connectivity. All products are fully managed via SNMP, command-line interface (CLI), and graphical user interface (GUI) and offer a Layer 2 feature set. In addition, the products provide deployment flexibility with compact, quiet, and energy-efficient designs. Manufacturer: Hewlett-Packard Manufacturer Part Number: J9138A#ABA Manufacturer Website Address: www.hp.com Brand Name: HP Product Line: ProCurve Product Model: 2520-24-PoE Product Name: ProCurve 2520-24-PoE Ethernet Switch Product Type: Ethernet Switch Media & Performance: Ethernet Technology: Gigabit Ethernet Media & Performance: Network Technology: 10/100/1000Base-T Management & Protocols: Manageable: Yes Power Description: Power Over Ethernet: Yes

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