Cisco Catalyst Express 520-24TT Switch

Cisco Catalyst Express 520-24TT Switch:

The Cisco Catalyst Express 520-24TT provides 24 access ports for desktop connectivity and two Gigabit Ethernet ports for uplink or server connectivity in general office environments. This switch is ideal for customers that previously used basic, unmanaged switches but that now require a richer network experience, including support for advanced features such as traffic prioritization with QoS, virtual LANs, and secure device traffic.

• 24 10/100 access ports for desktop connectivity
• 2 10/100/1000BASE-T ports for uplink or server connectivity

Cisco Catalyst Express 520 Series Switches

Today's innovative technologies have helped SMBs become more competitive than ever before. However, modern business technologies also can present significant challenges. As business networks become more essential to business success and the number of network-supported applications and devices grows, networks have become more complex and difficult to manage, especially for small organizations without a dedicated networking staff. SMBs also need secure, high-performing, and highly reliable networking solutions to help ensure that their essential business processes are always operating and available. In addition, they need all of these capabilities delivered in affordable, easy-to-use network solutions.

Cisco Catalyst^® Express 520 Series Switches provide a secure, high-performance foundation for your essential business applications that is both affordable and easy to deploy and use. A component of the Cisco Smart Business Communications System-a complete system of advanced voice, data, video, and wireless networking products designed specifically for SMBs-the Cisco Catalyst Express 520 Series supports your business' voice, security, and wireless networking services with a single, comprehensive platform.

The Cisco Catalyst Express 520 Series offers:

Cisco Catalyst Express 520 Series Switches are a family of fixed-configuration, Layer 2 managed Ethernet switches that provide the reliability, scalability, and rich feature set your business needs in a cost-effective, easy-to-manage platform. Designed specifically for organizations with fewer than 250 employees, the solutions provide:

• Wire-speed Fast Ethernet and Gigabit Ethernet connectivity
• Power over Ethernet (PoE) to provide 15.4 Watts simultaneously on all PoE ports
• Quality-of-service (QoS) intelligence to prioritize delay-sensitive traffic
• Robust integrated security to protect management traffic
• Simple deployment, centralized management, and troubleshooting
• Scalability to continually incorporate new applications and services over time
• Easy integration with established architectures without requiring major upgrades to the network infrastructure
• Limited Lifetime Warranty and free Cisco IOS^® Software updates

For businesses that have been using basic, unmanaged network switches but now need higher performance, increased reliability, and a more advanced feature set, the Cisco Catalyst Express 520 Series offers an ideal solution.

A Simple, Powerful Platform
Designed specifically for SMBs, the Cisco Catalyst Express 520 Series can be deployed quickly and managed centrally using the Cisco Configuration Assistant. This easy-to-use tool provides straightforward graphical interfaces to simplify the management, troubleshooting, and ongoing optimization of the Cisco Catalyst Express 520 Series as well as all the devices in the Cisco Smart Business Communication System. After the network is deployed, Cisco Configuration Assistant can generate status reports, synchronize passwords, and upgrade software across all of your Cisco network devices, reducing the time your staff must devote to network deployment and configuration and allowing them to focus on your business priorities. Cisco Configuration Assistant makes troubleshooting easy with the Cisco Troubleshooting Advisor, which identifies cabling problems, common configuration errors, and other potential problems in your network before they cause network outages.

Strong, Integrated Security
The Cisco Catalyst Express 520 Series provides several layers of security to protect your business. The switches provide embedded encryption capabilities to help ensure that all management traffic to and from the device is protected with Secure Sockets Layer (SSL) encryption. The Cisco Catalyst 520 Series also provides built-in support for advanced security services, including IEEE 802.1x port security, which helps ensure that only authorized users and applications can access your wired and wireless LAN, and Cisco Network Admission Control (NAC) services, which verify that all devices entering your network meet baseline security requirements. In addition, you can easily configure network security options with the Cisco Configuration Assistant, which allows you to choose from three preset levels of security using a simple “security slider.”

An Adaptable Network Foundation
The Cisco Catalyst Express 520 Series also prepares your network for the future. The switches feature embedded QoS intelligence to prioritize voice, video, and data networking traffic, allowing you to help ensure consistent network performance and to support delay-sensitive services such as real-time voice. Cisco Catalyst Express 520 switches are also available with as many as 24 PoE ports, allowing you to power IP phones, wireless access points, or IP video cameras directly over the Ethernet connection. In addition to making it easier to take advantage of advanced voice, video, and wireless services, PoE simplifies deployment by eliminating the need and cost to install separate power supplies for each connected network endpoint.

Benefits:
 

Business Benefits:

Building on 20 years of innovation, Cisco brings you a new network foundation of intelligent switches with the Cisco Catalyst Express 520 Series, helping your business:

• Improve employee productivity and customer responsiveness by preserving the availability of your essential business applications
• Meet tight budget restraints while still providing the security, capabilities, and application performance that your employees and customers require
• Improve the operational efficiency of your staff by reducing the time and effort required to configure, manage, and optimize the network
• Rapidly deploy and benefit from advanced IP communications and wireless solutions
• Enhance the security of sensitive business assets and customer information
• Protect your technology investments with a scalable solution that provides built-in features and capabilities to continually support new applications

A Comprehensive Foundation For Your Business Network
As you strive to better support your customers and enhance your profitability, you can expect to continue relying on network applications and communications tools as your business grows. With so much depending on your network, you need to help ensure that your network foundation delivers the security, performance, and uptime that your essential business applications demand. The Cisco Catalyst Express 520 Series provides a robust foundation for your network that combines optimal performance, strong security, and support for advanced wireless and IP communications solutions in an affordable, easy-to-use solution.

Features and Benefits:

The Cisco Catalyst 520 Series provides:

• High performance: With nonblocking, wire-speed switching on all ports, the Cisco Catalyst Express 520 Series offers the performance you need to support all of your essential business services, both today and in the future. Each switch provides as many as 24 10/100-Mbps ports for desktop, wireless access point, printer, and IP phone connectivity, as well as available 10/100/1000BASE-T Gigabit Ethernet and SFP optical connectivity options. All switches in the Cisco Catalyst Express 520 Series also feature head-of-line blocking prevention to help ensure that a heavily congested port will not affect performance on other ports on the switch. Ultimately, you can more effectively manage and prioritize your high-bandwidth traffic to keep employees productive and continually connected to business applications.
   
• PoE: Cisco Catalyst Express 520 Series Switches are available with as many as 24 PoE ports, allowing you to power network attached devices such as IP phones, wireless access points, video cameras, and other devices directly over the Ethernet connection, without an external power supply, simplifying deployment and eliminating the need and cost of installing separate power supplies for connected endpoints.
   
• QoS: Cisco Catalyst Express 520 Series Switches feature QoS intelligence to prioritize networking traffic such as voice, video, and data to help ensure consistent network performance and to support delay-sensitive data such as real-time voice. The switches also allow you to optimize QoS prioritization by using Cisco Smartports technology in Cisco Configuration Assistant.
   
• Simplified deployment and centralized management: You can easily deploy and centrally manage Cisco Catalyst Express 520 Series Switches with Cisco Configuration Assistant. This intuitive GUI-based application dynamically configures all products that are part of the Cisco Smart Business Communications System, allowing you to quickly deploy and centrally manage your entire office network. After the network is deployed, Cisco Configuration Assistant can generate status reports, synchronize passwords, and upgrade software across all of your Cisco network devices, reducing the time your staff must devote to network deployment and configuration and allowing them to focus on your business priorities. Cisco Configuration Assistant is available for download free of charge at http://www.cisco.com/go/configassist.
   
• Robust security: Cisco Catalyst Express 520 Series Switches provide several layers of security to protect your business. The switches provide embedded encryption capabilities to help ensure that all management traffic to and from the device is protected with Secure Sockets Layer (SSL) encryption. The Cisco Catalyst 520 Series also provides built-in support for advanced security services. It includes IEEE 802.1x port security which helps ensure that only authorized users and applications can access your wired and wireless LAN and Cisco Network Admission Control (NAC) services, which verify that all devices entering your network meet baseline security requirements. In addition, you can configure network security options with the Cisco Configuration Assistant deployment interface, which allows you to choose from three preset levels of security using a simple security slider control.
   
• Simple monitoring and troubleshooting: Cisco Configuration Assistant makes troubleshooting easy with Cisco Troubleshooting Advisor, which identifies cabling problems, common configuration errors, and other potential problems in your network and recommends corrective action. Graphical trend charts and an alert LED help you identify problems before they cause network outages.
   
• Easy integration with the Cisco Smart Business Communications System: The Cisco Catalyst Express 520 Series was designed to integrate a complete system of advanced voice, data, video, and wireless networking products designed specifically for SMBs. You can quickly deploy and configure all components in the Cisco Smart Business Communications System, including the Cisco Catalyst Express 520 Series using Cisco Configuration Assistant.
   
• Ease of use: The Cisco Catalyst Express 520 Series was designed for ease of use by SMBs without dedicated networking resources. You can deploy the switches in minutes using Cisco Configuration Assistant's intuitive GUI without ever having to learn command-line interfaces or complex administrative terminals. Cisco Configuration Assistant can dynamically configure your switches or suggest recommended settings for all ports and let you choose from preset options with Cisco Smartports Advisor. In addition, all ports support autonegotiation of port speed, data rate, and duplex mode. The Cisco Catalyst Express 520 Series includes automatic medium-dependent interface crossover (Auto-MDIX) detection support, which determines the wire pair to use for transmitting and receiving data and avoids the use of incorrect cable types.
   
• Limited Lifetime Warranty: All Cisco Catalyst switches are protected for the life of the product by the Cisco Limited Lifetime Hardware Warranty and include free Cisco IOS Software updates.

Architecture:

There are four models in the Cisco Catalyst Express 520 Series Switch family. The three Fast Ethernet switches are ideal for desktop, IP telephony, and wireless Access Point connectivity.

Typical Cisco Catalyst Express 520 Series Switch Deployment Scenarios

Technical Specifications:

Cisco Catalyst Express 520-24TT Switch
Product image
Performance Summary:
DRAM/flash memory	64MB DRAM 16MB flash memory
Switching capacity	8.8 Gbps
Forwarding rate	6.6-Mpps wire-speed performance
Layer 2 Switching:
Spanning Tree Protocol	Fast convergence using 802.1w, enabled by default Portfast: supported on: "Desktop," "Phone + Desktop," "Printer," and "Server" Smartports roles
MAC addressess	8000 MAC addresses
Virtual LANs (VLANs)	Up to 32 VLANs (1000 range) and support for 802.1Q trunking using Cisco Smartports
Number and type of queues	4 queues per port Shaped Round Robin (SRR) queuing Support for DSCP and CoS using Cisco Smartports
Port grouping	Support for Cisco EtherChannel® and IEEE 802.3ad Up to 6 groups Up to 8 ports per group
Smartports (Preset Cisco Recommended Network Enhancements, QoS, and Security):
Desktop	Optimized for desktop connectivity Configurable VLAN setting Port security enabled to limit unauthorized access to the network
IP Phone + Desktop	Optimized QoS for IP Phone + Desktop configurations Voice traffic is placed on "Cisco-Voice" VLAN Configurable data VLAN QoS level assures Voice-over-IP (VoIP) traffic takes precedence Port security enabled to limit unauthorized access to the network
Router	Configured for optimal connection to a router or firewall for WAN connectivity
Switch	Configured as an uplink port to a backbone switch for fast convergence Enables 802.1Q trunking
Access Point	Configured for optimal connection to a wireless access point Configurable VLAN
Server	Can be classified as trusted, critical, business, or standard server: Trusted: for use with Cisco CallManager Express, same QoS setting as Voice (VoIP traffic is prioritized) Critical: for critical servers with QoS set higher than default Business: default setting; QoS higher than desktop Internet traffic Standard: for servers set to same level as regular desktop Internet traffic Configurable VLAN Port security enabled to limit unauthorized access to the network
Printer	QoS settings for "Printer" are the same as "Desktop," "Access Point," and "Standard Server" Configurable VLAN Port security enabled to limit unauthorized access to the network
Guest	Guests are allowed access to the Internet, but not to the company network All guest ports are placed on the "Cisco-Guest" VLAN Port security enabled to limit unauthorized access to the network
Other	"Other" Smartports role allows for flexible connectivity of nonspecified devices Configurable VLANN No security No QoS policy
Diagnostic	Customers can connect diagnostics devices to monitor traffic on other switches (configurable using Cisco Network Assistant only)
Security:
SSL	SSL support: encrypts all HTTP traffic, allowing secure access to the browser-based management GUI in the switch
Security policy slider	Three security levels: low, medium, and high (configurable using Cisco Network Assistant only): Low: for business environments where there is limited guest access; limited number of devices are allowed per port Medium: for business environments where security is important; only authorized devices (by MAC address) are allowed on the company network High: for business environments where security is critical; only authorized devices (by MAC address) and authenticated users (using IEEE 802.1x) are allowed on the company network
Multicast	High-bandwidth video traffic is optimized so that it does not affect other applications on the network. Internet Group Management Protocol (IGMP) (v1, v2, and v3) snooping: IGMP snooping constrains multicast traffic at Layer 2 by configuring Layer 2 LAN ports dynamically to forward multicast traffic only to those ports that want to receive it.
Product Specifications:
Supported SFPs	100BASE-BX-10D 100BASE-BX-10U 100BASE-FX-FE 100BASE-FX-GE 100BASE-LX 1000BASE-LX/LH 1000BASE-SX
Standards and Cisco features supported	Broadcast suppression Cisco Discovery Protocol Version 2 IEEE 802.1d Spanning Tree Protocol IEEE 802.1p CoS classification IEEE 802.1q VLAN IEEE 802.1w Rapid Convergence Spanning Tree Protocol IEEE 802.1x Port Access Authentication IEEE 802.3ad Link Aggregation Control Protocol (LACP) IEEE 802.3af PoE IEEE 802.3x full duplex on 10BASE-T, 100BASE-TX, and 1000BASE-T ports • IEEE 802.3 10BASE-T IEEE 802.3u 100BASE-T/TX IEEE 802.3ab 1000BASE-T IEEE 802.3z 1000BASE-X IGMP (v1, v2, and v3) snooping Per VLAN Spanning Tree Per VLAN Spanning Tree Plus Per VLAN Rapid Spanning Tree Plus PortFast RADIUS SSL SNMPv3 UDLD VLAN Trunking Protocol (VTP)* (transparent mode only)
Management	RFC1213-MIB (MIB II) RMON-MIB (statistics, history, alarms, and events groups only) CISCO-PRODUCTS-MIB CISCO-SYSLOG-MIB CISCO-ENVMON-MIB BRIDGE-MIB ENTITY-MIB ETHERNET-MIB E-911 MIB support IF-MIB Device Manager: device-level GUI Embedded GUI Available in localized languages: Japanese, Chinese, French, Italian, German, and Spanish Cisco Network Assistant: network management tool Free download at www.cisco.com/en/US/products/ps5931/index.html Available in localized languages: Chinese, French, German, Italian, Japanese, Russian and Spanish
Connectors and cabling	10/100BASE-TX ports: RJ-45 connectors; 2-pair Category 5 unshielded twisted pair (UTP) cabling 10/100/1000BASE-T ports: RJ-45 connectors; 4-pair Category 5 UTP cabling 1000BASE-SX, 1000BASE-LX/LH, 100BASE-FX, 100BASE-LX, and 100BASE-BX-based ports: LC fiber connectors (single-mode or multimode fiber)
Physical specifications	Dimensions (H x W x D): 1.73 x 17.5 x 9.9 in. (4.39 x 44.45 x 25.15 cm) Weight: 8 lb (3.7 kg)
Environmental Requirements	Operating temperature: 32 to 113ºF (0 to 45ºC) Storage temperature: -13 to 158ºF (-25 to 70ºC) Operating relative humidity: 10 to 85% (noncondensing) Operating altitude: up to 10,000 ft (3000m) Storage altitude: up to 15,000 ft (4500m)
Predicted mean time between failure (MTBF)	308,482 hours or 35 years
Acoustic noise	ISO 7770, bystander position: operating to an ambient temperature of 30ºC 40dBa
Power requirements:
Power consumption (maximum)	30W or 102 Btu per hour
Power dissipation	30W
Input voltage	AC input voltage/frequency: 100-240VAC, 1.3-0.8A, 50-60Hz
Regulatory Agency Approvals:
Safety certifications	UL to UL 60950-1 CUL to CAN/CSA C22.2 No. 60950-1 TUV/GS to EN 60950-1 CB to IEC 60950-1 with all country deviations NOM to NOM-019-SCFI CE marking AS/NZS 60950-1, First Edition
Electromagnetic compatibility certifications	FCC Part 15 Class A EN 55022 Class A (CISPR22) EN 55024 (CISPR24) VCCI Class A AS/NZS CISPR22 Class AA MIC China EMC requirements GOST

Models Comparison:

Learn about the similarities and differences of the models in this product series.

Cisco Catalyst Express 520 Series Switches Models
Model	Port Density and Type	Forwarding Rate	PoE Class 2 / PoE Class 3 Devices Supported	Maximum Power Consumption / Dissipation
520-8PC	8 10/100 access ports with PoE and 1 10/100/1000BASE-T/SFP ports	2.7 Mpps	8/8	204 W, 273 Btu per hr
520-24TT	24 10/100 access ports and 2 10/100/1000BASE-T ports	6.6 Mpps	-	30 W, 102 Btu per hr
520-24LC	20 10/100 access ports, 4 10/100 access ports with PoE, and 2 10/100/1000BASE-T/SFP ports	6.6 Mpps	4/4	110 W, 375 Btu per hr
520-24PC	24 10/100 access ports with PoE and 2 10/100/1000BASE-T/SFP ports	6.6 Mpps	24/24	460 W, 1507 Btu per hr
520G-24TC	24 10/100/1000BASE-T ports and 2 10/100/1000BASE-T/SFP ports	18 Mppss	-	45 W, 154 Btu per hr

Documentation:

Download the Cisco Catalyst Express 520 Series Switches Datasheet (PDF).