CISCO 2960G DATASHEET PDF

About this product Product Information Move your data to a fast track using stackable Cisco Catalyst series switches for a quick transition to a computer linked system with 10 Gbps Ethernet connectivity. If you have room for one switch, you have room for many because you can stack these switches on top of each other. The fast changeover made possible by Cisco technology means it is easy to build your system while operating your business. These are important features whether your business is entry-level, mid-market, or a large enterprise. The other four are uplink ports. The SFP Gigabit port provides your system manager with the flexibility of connecting wireless or wired routers, systems, or other devices, using either a fiber or copper uplink.

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PoE removes the need for wall power to each PoE-enabled device and eliminates the cost for additional electrical cable and circuits that would otherwise be necessary in IP phone and WLAN deployments.

This switch does not need a power supply and receives power over the uplink from an upstream PoE device, providing deployment flexibility and availability. It is ideal for wiring and space-constraint applications. Gigabit Ethernet At speeds of Mbps, Gigabit Ethernet provides the bandwidth to meet new and evolving network demands, alleviate bottlenecks, and boost performance while increasing the return on existing infrastructure investments.

For example, a worker joins a team conference call through an IP videoconference, sends a MB spreadsheet to meeting participants, broadcasts the latest marketing video for the team to evaluate, and queries the customer relationship management CRM database for the latest real-time feedback.

Meanwhile, a multigigabyte system backup starts in the background and the latest virus updates are delivered to the client. Redundant Power System The Cisco Catalyst Series Switches support the new generation of the Cisco Redundant Power System RPS , which increases availability in a converged data, voice, and video network by providing transparent power backup to two of six attached switches at the same time.

Intelligence in the Network Networks of today are evolving to address four new developments at the network edge: Increase in desktop computing power Introduction of bandwidth-intensive applications Expansion of highly sensitive data on the network Presence of multiple device types, such as IP phones, WLAN access points, and IP video cameras These new demands contend for resources with existing mission-critical applications. As a result, IT professionals must view the edge of the network as critical to effectively manage the delivery of information and applications.

As companies increasingly rely on networks as their strategic business infrastructure, it is more important than ever to help ensure their high availability, security, scalability, and control. By adding Cisco intelligent functions for LAN access, you can now deploy networkwide intelligent services that consistently address these requirements from the desktop to the core and through the WAN. Cisco Catalyst Intelligent Ethernet switches help you realize the full benefits of adding intelligent services into your networks.

Deploying capabilities that make the network infrastructure highly available to accommodate time-critical needs, scalable to accommodate growth, secure enough to protect confidential information, and capable of differentiating and controlling traffic flows is critical to further optimizing network operations. Enhanced Security The wide range of security features that the Cisco Catalyst LAN Base Series offers helps you protect important information, keep unauthorized people off the network, guard privacy, and maintain uninterrupted operation.

The Cisco Identity-Based Networking Services IBNS solution provides authentication, access control, and security policy administration to secure network connectivity and resources. It provides the ability to dynamically administer granular levels of network access. Using the This setup allows IT departments to enable strong security policies without compromising user mobility and with minimal administrative overhead.

ACL lookups are done in hardware, so forwarding performance is not compromised when ACL-based security is implemented. Port security can be used to limit access on an Ethernet port based on the MAC address of the device to which it is connected. It also can be used to limit the total number of devices plugged into a switch port, thereby protecting the switch from a MAC flooding attack as well as reducing the risks of rogue wireless access points or hubs.

The MAC Address Notification feature can be used to monitor the network and track users by sending an alert to a management station so that network administrators know when and where users entered the network. Alternatively, a local username and password database can be configured on the switch itself. Fifteen levels of authorization on the switch console and two levels on the Web-based management interface provide the ability to give different levels of configuration capabilities to different administrators.

Cisco Discovery Protocol version 2 allows the Cisco Catalyst Series Switch to negotiate a more granular power setting when connecting to a Cisco powered device, such as IP phones or access points, than what is provided by IEEE classification. The PoE MIB provides proactive visibility into power usage and allows you to set different power level thresholds. Switches exchange speed, duplex, and power settings with end devices such as IP phones.

Availability and Scalability The Cisco Catalyst LAN Base Series is equipped with a large set of features that allow for network scalability and higher availability through multicast filtering as well as a complete suite of Spanning Tree Protocol enhancements aimed to maximize availability in a Layer 2 network.

Voice-aware Flexlink provides bidirectional, fast convergence in less than milliseconds. Advanced QoS The Cisco Catalyst LAN Base Series offers superior multilayer QoS features to help ensure that network traffic is classified and prioritized and that congestion is avoided in the best possible manner. Configuration of QoS is greatly simplified through automatic QoS Auto QoS , a feature that detects Cisco IP phones and automatically configures the switch for the appropriate classification and egress queuing.

This optimizes traffic prioritization and network availability without the challenge of a complex configuration. The Cisco Catalyst LAN Base Series can classify, reclassify, police, mark, queue, and schedule incoming packets and can queue and schedule packets at egress. Packet classification allows the network elements to discriminate between various traffic flows and enforce policies based on Layer 2 and Layer 3 QoS fields.

At the ingress, the Cisco Catalyst LAN Base Series also polices to determine whether a packet is in or out of profile, marks to change the classification label, passes through or drops out of profile packets, and queues packets based on classification. Control-plane and data-plane ACLs are supported on all ports to help ensure proper treatment on a per-packet basis. The Cisco Catalyst LAN Base Series supports four egress queues per port, giving network administrators more control in assigning priorities for the various applications on the LAN.

At egress, the switch performs congestion control and scheduling, the algorithm or process that determines the order in which queues are processed. The SRR algorithm helps ensure differential prioritization.

For example, it would be undesirable to have a large file download destined to one port on a switch increase latency in voice traffic destined to another port on this switch. This condition is avoided by making sure that voice traffic is properly classified and prioritized throughout the network. Other applications, such as Web browsing, can be handled on a lower-priority basis. Through CIR, bandwidth can be guaranteed in increments as small as 1 Mbps.

Bandwidth allocation is essential when network environments require service-level agreements or when it is necessary to control the bandwidth given to certain users. Management The new Express Setup feature simplifies the initial configuration of a switch.

Now you can set up the switch through a Web browser, eliminating the need for terminal-emulation programs and the command-line interface CLI. Express Setup reduces the cost of deployment by helping less-skilled personnel quickly and easily set up switches. Through a user-friendly GUI, users can configure and manage a wide array of switch functions and start the device manager of Cisco routers and Cisco wireless access points.

A few mouse clicks enable the Cisco recommended security, availability, and QoS features without the need to consult a detailed design guide. The Security wizard automatically restricts unauthorized access to servers with sensitive data.

Smartports and wizards save time for network administrators, reduce human errors, and help ensure that the configuration of the switch is optimized for these applications. CiscoWorks LMS is a suite of powerful management tools that simplify the configuration, administration, monitoring, and troubleshooting of Cisco networks. It integrates these capabilities into a world-class solution for improving the accuracy and efficiency of your operations staff, while increasing the overall availability of your network.

CiscoWorks LMS supports over different device types, providing: Network discovery, topology views, end-station tracking, and VLAN management Real-time network fault analysis with easy-to-deploy device-specific best-practice templates Hardware and software inventory management, centralized configuration tools, and Syslog monitoring Network response time and availability monitoring and tracking Real-time device, link, and port traffic management, analysis, and reporting Feature Benefit Ease of use and deployment Express Setup simplifies initial configuration with a Web browser, eliminating the need for more complex terminal emulation programs and CLI knowledge.

IEEE Auto Install for configuration and Image update: Simplify management of large number of switches, by automatically downloading specified configuration and image DHCP autoconfiguration of multiple switches through a boot server eases switch deployment. Autonegotiating on all ports automatically selects half- or full-duplex transmission mode to optimize bandwidth.

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. Automatic medium-dependent interface crossover Auto-MDIX automatically adjusts transmit and receive pairs if an incorrect cable type crossover or straight-through is installed on a copper port.

Time-domain reflectometer TDR to diagnose and resolve cabling problems on copper ports. This functionality can be used to revert to a previous configuration state, effectively rolling back any configuration changes that were made since that configuration file was saved. IP Service Level Agreement responder only uses active monitoring to generate traffic in a continuous, reliable, and predictable manner, thus enabling the measurement of network performance and health.

Switching Database Manager templates for security and QoS allow administrators to easily adjust memory allocation to the desired features based on deployment-specific requirements. VLAN trunks can be created from any port using standards-based Up to VLANs per switch and up to spanning-tree instances per switch are supported.

Layer 2 trace route eases troubleshooting by identifying the physical path that a packet takes from source to destination.

Switches exchange link and device information in multivendor networks. Cisco Network Assistant software Cisco Network Assistant is a no-charge, Windows-based application that simplifies the administration of networks of up to users. It supports a wide range of Cisco Catalyst intelligent switches.

The easy-to-use graphical interface provides both a topology map and front-panel view of the cluster and stacks. Configuration wizards need just a few user inputs to automatically configure the switch to optimally handle different types of traffic: voice, video, multicast, and high-priority data. A security wizard is provided to restrict unauthorized access to applications, servers, and networks. Multidevice and multiport configuration capabilities allow administrators to save time by configuring features across multiple switches and ports simultaneously.

The user-personalized interface allows modification of polling intervals, table views, and other settings. Alarm notification provides automated e-mail notification of network errors and alarm thresholds. Cisco Express Setup Express Setup simplifies initial configuration of a switch through a Web browser, eliminating the need for terminal emulation programs and CLI knowledge. The Web interface helps less-skilled personnel quickly and simply set up switches, thereby reducing the cost of deployment.

CiscoWorks support CiscoWorks network-management software provides management capabilities on a per-port and per-switch basis, providing a common management interface for Cisco routers, switches, and hubs.

SNMPv1, v2c, and v3 and Telnet interface support delivers comprehensive in-band management, and a CLI-based management console provides detailed out-of-band management. Cisco UplinkFast and BackboneFast technologies help ensure quick failover recovery, enhancing overall network stability and reliability. Command-switch redundancy enabled in Cisco Network Assistant software allows designation of a backup command switch that takes over if the primary command switch fails.

Switch port autorecovery errdisable automatically attempts to re-enable a link that is disabled because of a network error. Cisco Redundant Power System RPS support provides superior internal power-source redundancy for up to six Cisco networking devices, resulting in improved fault tolerance and network uptime.

Bandwidth aggregation up to 8 Gbps through Cisco Gigabit EtherChannel technology and up to Mbps through Cisco Fast EtherChannel technology enhances fault tolerance and offers higher-speed aggregated bandwidth between switches and to routers and individual servers.

Flex Links provides link redundancy with convergence time ms without requiring Spanning Tree Protocol. Link State Tracking provides Layer 2 redundancy in the network when used in conjunction with server or programmable logic controller PLC network interface card NIC adapter teaming. Integrated Cisco IOS Software features for bandwidth optimization Per-port broadcast, multicast, and unicast storm control prevents faulty end stations from degrading overall systems performance.

Egress committed rate ECR guarantee provides load balancing and redundancy. Internet Group Management Protocol IGMP version 3 snooping provides fast client joins and leaves of multicast streams and limits bandwidth-intensive video traffic to only the requestors.

IGMP filtering provides multicast authentication by filtering out no subscribers and limits the number of concurrent multicast streams available per port.

Cisco control-plane and data-plane QoS ACLs on all ports help ensure proper marking on a per-packet basis. Four egress queues per port enable differentiated management of up to four traffic types.

SRR scheduling ensures differential prioritization of packet flows by intelligently servicing the ingress and egress queues. Weighted tail drop WTD provides congestion avoidance at the ingress and egress queues before a disruption occurs. Strict priority queuing guarantees that the highest-priority packets are serviced ahead of all other traffic.

There is no performance penalty for highly granular QoS functions. Asynchronous data flows upstream and downstream from the end station or on the uplink are easily managed using ingress policing and egress shaping. Up to 64 aggregate or individual polices are available per Fast Ethernet or Gigabit Ethernet port.

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