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Cisco 3750-X Series Switches

Cisco 3750-X Switches
The Cisco Catalyst 3750-X Series Switches are the ideal choice for supporting the most demanding applications. These energy-efficient, stackable access switches are easy to deploy and operate. They bring exceptional security, availability, and quality of service (QoS) to your campus or branch network, to boost productivity and enhance efficiency.

Cisco 3750-X Series Switches


The Cisco® Catalyst® 3750-X Series Switches are an enterprise-class lines of stackable and standalone switches, respectively. These switches provide high availability, scalability, security, energy efficiency, and ease of operation with innovative features such as Cisco StackPower, IEEE 802.3at Power over Ethernet Plus (PoE+) configurations, optional network modules, redundant power supplies, and Media Access Control Security (MACsec) features. The Cisco Catalyst 3750-X Series Switches with StackWise® Plus technology provides scalability, ease of management and investment protection for the evolving business needs. The Cisco Catalyst 3750-X enhance productivity by enabling applications such as IP telephony, wireless, and video for borderless network experience.

The Cisco 3750-X Series Switches Features:

  • 24 and 48 10/100/1000 PoE+, non-PoE models, and 12 and 24 GE SFP port models
  • 24 and 48 10/100/1000 UPOE-capable models with Energy Efficient Ethernet (EEE) support
  • Four optional uplink network modules with GE or 10GE ports
  • Industry first PoE+ with 30W power on all ports in 1 rack unit (RU) form factor
  • Dual redundant, modular power supplies and fans
  • Media Access Control Security (MACsec) hardware-based encryption
  • Flexible NetFlow and switch-to-switch hardware encryption with the Service Module uplink
  • Open Shortest Path First (OSPF) for routed access in IP Base image
  • IPv4 and IPv6 routing, Multicast routing, advanced quality of service (QoS), and security features in hardware
  • Enhanced limited lifetime warranty (LLW) with next business day (NBD) advance hardware replacement and 90 day access to Cisco Technical Assistance Center (TAC) support
  • Enhanced Cisco EnergyWise for operational cost optimization by measuring actual power consumption of the PoE devices, reporting, and reducing energy consumption across the network
  • USB Type-A and Type-B ports for storage and console respectively and an out-of-band Ethernet management port

In addition to the above features, the Cisco Catalyst 3750-X Series Switches also offer:

  • Cisco StackPower™ technology: An innovative feature and industry first for sharing power among stack members
  • Cisco StackWise Plus technology for ease of use and resiliency with 64 Gbps of throughput
  • Investment protection with backward compatibility with all other models of Cisco Catalyst 3750-X Series Switches

Cisco 3750-X Series Switches

Cisco Catalyst 3750-X Series Software

In addition to IP Base and IP Services feature sets, the Cisco Catalyst 3750-X Series come with a new LAN Base feature set. The three feature sets available with all Cisco Catalyst 3750-X Series Switches are:

  • LAN Base: enterprise access Layer 2 switching features
  • IP Base: baseline enterprise access Layer 3 switching features
  • IP Services: advanced Layer 3 switching (IPv4 and IPv6) features

The LAN Base feature set includes comprehensive Layer 2 features, with up-to 255 VLANs. The IP Base feature set provides baseline enterprise services in addition to all LAN Base features, with 1K VLANs. IP Base also includes the support for routed access, StackPower, MACsec, and the new Cisco Service Module. The IP Services feature set provides full enterprise services that includes advanced Layer 3 features such as Enhanced Interior Gateway Routing Protocol (EIGRP), Open Shortest Path First (OSPF), Border Gateway Protocol (BGP), Protocol Independent Multicast (PIM), and IPv6 routing such as OSPFv3 and EIGRPv6. All software feature sets support advanced security, QoS, and management features.

The Cisco Catalyst 3750-X Series Switches with LAN Base feature set can only stack with other Cisco Catalyst 3750-X Series LAN Base switches. A mixed stack of LAN Base switch with IP Base or IP Services features set is not supported.

Customers can transparently upgrade the software feature set in the Cisco Catalyst 3750-X Series Switches through Cisco IOS® Software activation. Software activation authorizes and enables the Cisco IOS Software feature sets. A special file contained in the switch, called a license file, is examined by Cisco IOS Software when the switch is powered on. Based on the license's type, Cisco IOS Software activates the appropriate feature set. License types can be changed, or upgraded, to activate a different feature set.

Cisco StackWise Plus Technology

Cisco StackWise Plus technology is built on the highly successful industry leading StackWise technology, which is a premium stacking architecture optimized for GbE. StackWise technology was designed to respond to additions, deletions, and redeployment while maintaining constant performance. The stack behaves as a single switching unit that is managed by a master switch elected from one of the member switches. The master switch automatically creates and updates all the switching and optional routing tables. A working stack can accept new members or delete old ones without service interruption. StackWise creates a highly resilient single unified system of up to nine switches, providing simplified management using a single IP address, single telnet session, single command-line interface (CLI), auto-version checking, auto configuration, and more. StackWise Plus supports all the features of StackWise and provides backward compatibility with the existing Cisco Catalyst 3750 Series Switches while enhancing the throughput of the system up to 64 Gbps. StackWise Plus also enables local switching in Cisco Catalyst 3750-X Series Switches. Local switching packets coming into a port in the Cisco Catalyst 3750-X Series or 3750-E Series Switch destined for another port in the same switch do not have to traverse through the stack ring, thus increasing the forwarding capacity of the switch. The Cisco Catalyst 3750-X Series stacks up to nine switches as a single logical unit for a total of 432 Ethernet 10/100/1000 ports with 18 10GbE ports. Individual 10/100/1000 units can be joined in any combination to evolve with network needs.

Cisco StackPower Technology

The Cisco Catalyst 3750-X Series introduces Cisco StackPower technology, innovative power interconnect system that allows the power supplies in a stack to be shared as a common resource among all the switches. Cisco StackPower unifies the individual power supplies installed in the switches and creates a pool of power, directing that power where it is needed. Up to four switches can be configured in a StackPower stack with the special connector at the back of the switch using the StackPower cable. StackPower can be deployed in either power sharing mode or redundancy mode. In power sharing mode, the power of all the power supplies in the stack is aggregated and distributed among the switches in the stack. In redundant mode, when the total power budget of the stack is calculated, the wattage of the largest power supply is not included. That power is held in reserve and used to maintain power to switches and attached devices when one power supply fails, enabling the network to operate without interruption. Following the failure of one power supply, the StackPower mode becomes power sharing.

StackPower allows customers to simply add one extra power supply in any switch of the stack and provide either power redundancy for any of the stack members or simply add more power to the shared pool. StackPower eliminates the need for an external redundant power system or installation of dual power supplies in all the stack members.

Service Module

The new Cisco Service Module offers enhanced security and Flexible Netflow (FNF) features on the uplink ports of the Catalyst 3750-X. The service module is supported with IP Base or IP Services feature set. It can be used with SFP or SFP+ at 1G or 10G speeds. The new Cisco Service Module has custom dedicated hardware for FNF monitoring, separate from the dedicated hardware for MACSec. Therefore there is no impact on packet forwarding performance & latency. It offers flexibility with the user being able to define flows. The new Cisco Service Module enables the following services:

  • Line rate (40G) Flexible NetFlow for Network Monitoring and Security Anomaly Detection
    • Supported version 9
    • 32,000 simultaneous flows
    • 128 of simultaneous active monitors
  • Line rate (40G) MACsec encryption (please refer to MACsec section below)

FNF is a networking monitoring technology. A NetFlow table can be used to collect flow statistics. The flow information can be used by customers for a variety of use cases like understanding:

  1. Applications running on the network, and identify undesired applications, P2P etc
  2. Granular Local and aggregated Campus view (Top N applications, drill down etc).
  3. Top talkers (ports, users, applications) for application usage, productivity and asset utilization etc.
  4. Security Anomaly Detection by examining flows that do not traverse trust boundaries for inside the perimeter attacks
  5. Impacts of network and application changes
  6. Compliance conformation
  7. Traffic patterns for capacity planning

Enabling FNF at the access switch ensures you get all flows. The access switch is the most logical place in the network for collecting statistics and monitoring all flows. With Netflow, you can obtain MAC-address and access port information associated with the flow, to get directly to the source of the flow. Most collectors are able to leverage the location based on MAC-address and interface port number provided by the access switch to the collector. Thus by enabling FNF at the access switch you are able to get the location information of the flow. The access switch has a variety of identity mechanism for user authentication and adding user awareness is the natural progression that can be developed. Access switches are an order of magnitude greater than distribution and core which makes them scale well for FNF and ensure there are no performance impacts of oversubscription at aggregation and core.

10GB-T Module

The new Cisco 10G Base-T module is hot-swapable and can operate at either 10GE or GE speed (with manual configuration)

MACsec

The Cisco Catalyst 3750-X Series Switches offer exceptional security with integrated hardware support for MACsec defined in IEEE 802.1AE. MACsec provides MAC layer encryption over wired networks using out-of-band methods for encryption keying. The MACsec Key Agreement (MKA) protocol provides the required session keys and manages the keys required for encryption when configured. MKA and MACsec are implemented following successful authentication using 802.1x Extensible Authentication Protocol (EAP) framework. In Cisco Catalyst 3750-X Series Switches both the user/down-link ports (links between the switch and endpoint devices such as a PC or IP phone) and, using the service module, the network/up-link ports can be secured using MACsec. With the service module you can encrypt switch to switch links such as access to distribution, or encrypt dark fiber links within a building or between buildings.

Dual Redundant Modular Power Supplies

The Cisco Catalyst 3750-X Series Switches support dual redundant power supplies. The switch ships with one power supply by default and the second power supply can be purchased at the time of ordering the switch or at a later time. If only one power supply is installed, it should always be in the power supply bay 1.

Power over Ethernet Plus (PoE+)/Universal Power Over Ethernet (UPOE)

In addition to PoE 802.3af, the Cisco Catalyst 3750-X Series Switches support PoE+ (IEEE 802.3at standard), which provides up to 30W of power per port and UPOE, which provides 60W of power per port (only on UPOE-capable models). The Cisco Catalyst 3750-X Series Switches can provide a lower total cost of ownership for deployments that incorporate Cisco IP phones, Cisco Aironet® wireless LAN (WLAN) access points, or any IEEE 802.3af-compliant end device. PoE removes the need for wall power to each PoE-enabled device and eliminates the cost for additional electrical cabling and circuits that would otherwise be necessary in IP phone and WLAN deployments. Table 8 shows the power supply combinations required for different PoE needs. Cisco UPOE switches extend the IEEE 802.3 PoE+ standard to double the power per port to 60 watts. UPOE-enabled ports can be used to deliver power for all current PoE/PoE+ solutions in addition to UPOE devices, including VDI clients, IP turrets for financial trading, personal Cisco TelePresence® systems, and more. The maximum UPOE budget available on the Cisco Catalyst 3750-X switch is 1800W per switch. This requires the 1100W AC power supply in both the power supply slots. 1800W in POE budget makes sure that the 24-port models support full UPOE on all ports (24 x 60W/port = 1440W) and the 48-port models support up to 30 UPOE connections (30 x 60W/port = 1800W) per switch.

Xpandable Power System (XPS) 2200

The XPS 2200 is the next-generation redundant power system (RPS). It not only provides the functionalities offered by the RPS but also provides enhanced services with the support for Cisco StackPower technology. When used with the Cisco Catalyst 3750-X, it provides StackPower functionality to all the stack members, including power supply redundancy.
The XPS supports dual redundant power supplies and fans. Up to nine switches can be connected to the XPS 2200, and it can provide power backup to two of the failed switches concurrently (when appropriately sized power supplies are used). The power supplies used by the XPS 2200 are the same as the ones supported in the Cisco Catalyst 3750-X Series Switches. The XPS 2200 is fully configurable for setting switch priorities in case of multiple failures.

Cisco Catalyst 3750-X Series Switches Enable Cisco Borderless Network Experience

Borderless Networks, a Cisco architecture, deliver the new workspace experience, connecting anyone, anywhere, using any device, to any resource securely, reliably, and transparently. Cisco's Borderless Networks architecture addresses primary IT and business challenges to help create a truly borderless experience by bringing interactions closer to the employee and customer.
Borderless experience is only possible with intelligent network elements designed and architected to meet the needs of a global workspace. Cisco Network Access is a primary component of this architecture, enabling various borderless network services such as mobility, security, MediaNet, EnergyWise, and ease of operations for increased productivity and operational efficiency. When network access is intelligent, it knows the identity of the user, as well as where the user is on the network. It knows what is connecting to the network, to automatically provision the network for QoS and delivery. It becomes services-aware to optimize user experience. Only with intelligent access network, your enterprise can go borderless securely and transparently. Your business can save energy, simplify operations with better business efficiency, and have an optimized total cost of ownership.

Cisco Network Access for Borderless solution focuses on the following primary areas:

  • Sustainability
  • Ease of operations
  • Borderless security
  • Borderless experience

Sustainability

Cisco Catalyst switching solutions enable greener practices through measurable power efficiency, integrated services, and continuous innovations such as Cisco EnergyWise, an enterprisewide solution that monitors and conserves energy with customized policies. Together, Cisco EnergyWise technology and Cisco Catalyst switches reduce greenhouse gas (GhG) emissions and increase energy cost savings and sustainable business behaviour. Sustainability features in the Cisco Catalyst 3750-X Series Switches include the following features sets:

  • Cisco EnergyWise technology
  • Efficient switch operation
  • Intelligent power management
  • Energy Efficient Ethernet

Cisco EnergyWise Technology

Cisco EnergyWise is an innovative architecture, added to fixed configuration switches, promoting companywide sustainability by reducing energy consumption across an entire corporate infrastructure and affecting more than 50 percent of global greenhouse gas emissions created by worldwide building infrastructure, a much greater effect than the 2 percent generated by the IT industry. Cisco EnergyWise enables companies to measure the power consumption of network infrastructure and network-attached devices and manage power consumption with specific policies, reducing power consumption to realize increased cost savings, potentially affecting any powered device. EnergyWise encompasses a highly intelligent network-based approach to communicate messages that measure and control energy between network devices and endpoints. The network discovers Cisco EnergyWise manageable devices, monitors their power consumption, and takes action based on business rules to reduce power consumption. EnergyWise uses a unique domain-naming system to query and summarize information from large sets of devices, making it simpler than traditional network management capabilities. Cisco EnergyWise's management interfaces allow facilities and network management applications to communicate with endpoints and each other using the network as a unifying fabric. The management interface uses standard SNMP or TCP to integrate Cisco and third-party management systems.

Efficient Switch Operation

Cisco Catalyst 3750-X Series Switches, designed and engineered by Cisco, provide optimum power saving, low power operations for industry best-in-class power management, and power consumption capabilities. The Cisco Catalyst 3750-X ports are capable of reduced power modes so that ports not in use can move into a lower power utilization state.
StackPower lets customers to simply add one extra power supply in any switch of the stack and provide either power redundancy for any of the stack members or simply add more power to the shared pool.

Intelligent Power over Ethernet Management

The Cisco Catalyst 3750-X Series PoE models support Cisco IP phones and Cisco Aironet WLAN access points providing up to 30W of power per port, as well as any IEEE 802.3af-compliant end device.

  • Cisco Discovery Protocol Version 2 allows the Cisco Catalyst 3750-X Series Switches 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.
  • Per port power consumption command allows customers to specify maximum power setting on an individual port.
  • Per port PoE power sensing measures actual power being drawn, enabling more intelligent control of powered devices.
  • The PoE MIB provides proactive visibility into power usage and allows customers to set different power-level thresholds.

Energy Efficient Ethernet (EEE)

EEE (IEEE 802.3az) provides a mechanism and a standard for reducing the energy usage of an Ethernet port without affecting the vital function of forwarding traffic. During peak work hours, most wired client devices use their network connections with infrequent bursts. The normal EEE operation is well suited to this behavior. During off-peak times the client devices may use sleep or hibernate modes. At this time the network interface can be completely inactive and able to be woken on demand by remote request.

Prior to the EEE standard, it was a common practice for client devices such as personal computers and servers to save power during sleep states by renegotiating the Ethernet link to a lower speed. With EEE capability, PCs and other "sleep oriented" devices can achieve power savings similar to the speed downshift while allowing a much faster transition back to the active state. Faster link wake time improves the user's experience by allowing a faster transition for the client device from the sleep to active and connected state.

Cisco Catalyst 3750-X series switches support EEE on the UPOE models.

Ease of Operations

The Cisco Catalyst 3750-X helps reduce the operating costs through:

  • Cisco Catalyst Smart Operations
  • Easy to use deployment and control features
  • Advanced, intelligent network management tools
Cisco Catalyst Smart Operations

Cisco Catalyst Smart Operations is a comprehensive set of capabilities that simplify LAN deployment, configuration, and troubleshooting. In addition to adaptive, always on technologies such as StackWise and StackPower, Cisco Catalyst Smart Operations enable zero touch installation and replacement of switches, fast upgrade, as well as ease of troubleshooting with reduced operational cost. Cisco Catalyst Smart Operations is a set of features that includes Smart Install, auto Smartports, Smart Configuration and Smart Troubleshooting to enhance operational excellence:

  • Cisco Smart Install is a transparent plug and play technology to configure the Cisco IOS Software image and switch configuration without user intervention. Smart Install utilizes dynamic IP address allocation and the assistance of other switches to facilitate installation providing transparent network plug and play.
  • Cisco Auto Smartports provide automatic configuration as devices connect to the switch port, allowing auto detection and plug and play of the device onto the network.
  • Cisco Smart Configuration provides a single point of management for a group of switches and in addition adds the ability to archive and backup configuration files to a file server or switch allowing seamless zero touch switch replacement.
  • Cisco Smart Troubleshooting is an extensive array of debug diagnostic commands and system health checks within the switch, including Generic Online Diagnostics (GOLD) and Onboard Failure Logging (OBFL). Easy to Use Deployment and Control Features
    • Embedded Event Manager (EEM) is a powerful and flexible feature that provides real-time network event detection and onboard automation. Using EEM, customers can adapt the behavior of their network devices to align with their business needs. This feature requires IP Base feature set.
    • IP service-level agreements (SLAs) enable customers to assure new business-critical IP applications, as well as IP services that utilize data, voice, and video, in an IP network. This feature requires IP Services feature set.
    • Dynamic Host Configuration Protocol (DHCP) autoconfiguration of multiple switches through a boot server eases switch deployment.
    • Automatic QoS (AutoQoS) simplifies QoS configuration in voice over IP (VoIP) networks by issuing interface and global switch commands to detect Cisco IP phones, classify traffic, and help enable egress queue configuration.
    • Stacking master configuration management and Cisco StackWise technology helps ensure that all switches are automatically upgraded when the master switch receives a new software version. Automatic software version checking and updating help ensure that all stack members have the same software version.
    • Autonegotiation on all ports automatically selects half- or full-duplex transmission mode to optimize bandwidth.
    • Dynamic Trunking Protocol (DTP) facilitates dynamic trunk configuration across all switch ports.
    • Port Aggregation Protocol (PAgP) automates the creation of Cisco Fast EtherChannel® groups or Gigabit EtherChannel groups to link to another switch, router, or server.
    • Link Aggregation Control Protocol (LACP) allows the creation of Ethernet channeling with devices that conform to IEEE 802.3ad. This feature is similar to Cisco EtherChannel technology and PAgP.
    • Automatic media-dependent interface crossover (MDIX) automatically adjusts transmit and receive pairs if an incorrect cable type (crossover or straight-through) is installed.
    • Unidirectional Link Detection Protocol (UDLD) and Aggressive UDLD allow unidirectional links caused by incorrect fiber-optic wiring or port faults to be detected and disabled on fiber-optic interfaces.
    • Switching Database Manager (SDM) templates for access, routing, and VLAN deployment allow the administrator to easily maximize memory allocation to the desired features based on deployment-specific requirements.
    • Local Proxy Address Resolution Protocol (ARP) works in conjunction with Private VLAN Edge to minimize broadcasts and maximize available bandwidth.
    • VLAN1 minimization allows VLAN1 to be disabled on any individual VLAN trunk.
    • Smart Multicast, with Cisco StackWise Plus technology, allows the Cisco Catalyst 3750-X Series to offer greater efficiency and support for more multicast data streams such as video by putting each data packet onto the backplane only once.
    • Internet Group Management Protocol (IGMP) Snooping for IPv4 and IPv6 MLD v1 and v2 Snooping provide fast client joins and leaves of multicast streams and limit bandwidth-intensive video traffic to only the requestors.
    • Multicast VLAN Registration (MVR) continuously sends multicast streams in a multicast VLAN while isolating the streams from subscriber VLANs for bandwidth and security reasons.
    • Per-port broadcast, multicast, and unicast storm control prevents faulty end stations from degrading overall systems performance.
    • Voice VLAN simplifies telephony installations by keeping voice traffic on a separate VLAN for easier administration and troubleshooting.
    • Cisco VLAN Trunking Protocol (VTP) supports dynamic VLANs and dynamic trunk configuration across all switches.
    • Remote Switch Port Analyzer (RSPAN) allows administrators to remotely monitor ports in a Layer 2 switch network from any other switch in the same network.
    • For enhanced traffic management, monitoring, and analysis, the Embedded Remote Monitoring (RMON) software agent supports four RMON groups (history, statistics, alarms, and events).
    • Layer 2 traceroute eases troubleshooting by identifying the physical path that a packet takes from source to destination.
    • 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 intranet switches.
    Advanced, Intelligent Network Management Tools

    The Cisco Catalyst 3750-X Series Switches offer both a superior CLI for detailed configuration and Cisco Network Assistant software, a PC-based tool for quick configuration based on preset templates. In addition, CiscoWorks LAN Management Solution (LMS) supports the Cisco Catalyst 3750-X Series Switches for networkwide management.

    Cisco Network Assistant

    A PC-based network management application designed for small and medium-sized business (SMB) networks with up to 250 users, Cisco Network Assistant offers centralized network management and configuration capabilities. Cisco Network Assistant uses Cisco Smartports technology to simplify both initial deployment and ongoing maintenance. This application also features an intuitive GUI where users can easily apply common services across Cisco switches, routers, and access points, such as:

    • Configuration management
    • Troubleshooting advice
    • Inventory reports
    • Event notification
    • Network security settings
    • Password synchronization
    • Drag-and-drop Cisco IOS Software upgrades
    • Secure wireless

    For detailed information about Cisco Network Assistant, visit http://www.cisco.com/go/cna.

    CiscoWorks LAN Management Solution

    CiscoWorks LAN Management Solution (LMS) is a comprehensive network lifecycle management solution. It provides an extensive library of easy-to-use features to automate the initial and day-to-day management of your Cisco network infrastructure. CiscoWorks LMS uniquely uses Cisco hardware and software platform knowledge and operational experience into a powerful set of work-flow driven configuration, monitoring, troubleshooting, reporting, and administrative tools. Including:

    • Support for new Cisco hardware platforms the day they ship
    • Support for new technologies and services from initial deployment to day-to-day administration and management, such as EnergyWise, Identity, Cisco Auto Smartports, Cisco Smart Install, and much more
    • Configuration management tools built from Cisco experience and Cisco Validated Design recommendations
    • Monitoring and troubleshooting capabilities that incorporates Cisco hardware best practices and diagnostics features
    • Automation in managing hardware inventories, security vulnerabilities (PSIRTS) and platform end-of-life and support cycles
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