Cisco Switches: List of MainFeatures and Types

Cisco switches deliver high performance, secure, scalable solutions to meet the needs of small businesses, multi-site enterprises, data centers, or Service...

From core to edge, Cisco network switches provide the performance, high availability, comprehensive security, delivery optimization, and enhanced manageability you need to optimize your network infrastructure.

Cisco offers two types of network switches: Fixed Configuration Switches&Modular Switches

Fixed Configuration Switches

These Ethernet switching solutions support a wide range of deployments, including enterprise campus, branch offices, midsize organizations, and small and medium-sized businesses (SMB), and offer highly secure access, operational simplicity, energy efficiency, and enhanced connected user experience.

Cisco Catalyst 2960 Series

• Standalone switches with enhanced LAN services for small and medium-sized businesses and branch office networks
• Layer 2 switching with intelligent Layer 2-4 services
• Up to 48 10/100 ports or 10/100/1000 ports
• Fast Ethernet PoE configurations with 15.4W of PoE up to 24 ports
• Flexibility of LAN Base or LAN Lite models
• AC power supply failure protection with external power supply
• Limited lifetime warranty

Cisco Catalyst 2960-S Series

• Stackable (with Cisco FlexStack) fixed-configuration Layer 2 switches
• Cost-effective solution for mid-sized organizations and branch offices
• Full Power Over Ethernet Plus and basic Borderless Networks services
• Zero-touch deployment and operations via Catalyst Smart Operations

Cisco Catalyst 3560 Series

• Standalone switches for branch offices and midsize organizations
• High performance with wirespeed Layer 2-4 switching, multicast and IPv6 routing
• Network security includes ACLs, authentication, port-level security, and identity-based network services
• Transparent power supply protection with external power backup; DC power option available
• Fast Ethernet and Gigabit Ethernet connectivity
• PoE configurations with 15.4W per port
• Up to 48 10/100/1000 ports plus 4 SFP ports
• Limited lifetime warranty

Cisco Catalyst 3560-E Series

• Standalone  and aggregation switches for campus and branch offices
• Helps deploy secure converged services and adapt to changing network and application requirements
• 10-second 10G upgrade with Cisco TwinGig converter module
• 15.4W of PoE on all 48 ports
• 802.1n support scales beyond 15.4W per port
• Cisco EnergyWise
• Modular fan and power supply with externally available backup
• High performance with wirespeed Layer 2-4 switching, dynamic multicast and IPv6 routing
• Integrated advanced security features, including ACLs, identity-based network services, and Cisco Network Admission Control (NAC)
• Aggregation switches  with dual redundant modular power supplies and fans for nonstop operation
• Up to 48 10/100/1000 ports plus dual 10 Gb Ethernet ports on all models
• Limited lifetime warranty

Cisco Catalyst 3560-X Series

• Fixed-configuration switches for campus and branch deployments
• High-availability and advanced security features assure consistent service
• Service and network modules help enable incremental link and service upgrades
• Full Power Over Ethernet Plus and comprehensive Borderless Networks services

Cisco Catalyst 3750 Series

• cisco 3750 switch  Stackable multilayer switches for branch offices and midsize organizations
• Cisco StackWise 32 Gbps interconnect for a unified, resilient system of up to nine switches with subsecond failover
• Transparent power supply protection with external power backup; DC power option available
• Cisco EnergyWise
• Uninterrupted performance with wirespeed Layer 2-4 switching, dynamic multicast, and IPv6 routing
• Network security includes access control lists (ACLs), authentication, port-level security, and identity-based network services
• Fast Ethernet and Gigabit Ethernet connectivity
• PoE configurations with 15.4W per port
• Up to 48 10/100/1000 ports plus 4 SFP ports
• Limited lifetime warranty

Cisco Catalyst 3750-E Series

• cisco 3750E switch Stackable multilayer switches for campus and larger branch offices
• High availability platform for deploying secure converged services and adapt to changing network and application requirements
• StackWise Plus with 64 Gbps interconnect for a unified, resilient system of up to nine switches with subsecond failover
• 10-second 10G upgrade with cisco 3750G switch TwinGig converter module
• 15.4W of Power over Ethernet (PoE) on all 48 ports
• 802.11n support scales beyond 15.4W per port
• Cisco EnergyWise
• Modular fan and power supply with externally available backup; DC power option available
• Uninterrupted performance with wirespeed Layer 2-4 switching, dynamic multicast routing and IPv6 routing
• Integrated advanced security features including ACLs, identity-based network services and Network Admission Control (NAC)
• Fully backwards compatible with Cisco Catalyst 3750 Series for investment protection
• Up to 48 10/100/1000 ports plus dual 10 GbE ports on all models
• Limited lifetime warranty

Cisco Nexus 3750-X Series

• Stackable fixed-configuration cisco 3750X switch for campus and branch deployments
• StackWise Plus and StackPower deliver high availability and operational efficiency
• Service and network modules help enable incremental link and service upgrades
• Full Power Over Ethernet Plus and comprehensive Borderless Networks services

Basic Cisco Switch Configuration

Generally speaking, the cisco switch command are the best in the market. Versatile, reliable, flexible and powerful, the Cisco switch product line (such as the 2960, 3560, 3750, 4500, 6500, etc.) offer unparalleled performance and features.

Although a Cisco switch configuration is a much simpler network device compared with other devices (e.g. routers and firewalls), many people have difficulties in configuring a Cisco Catalyst Switch. Unlike other lower class switch vendors (which are plug-and-play), the Cisco switch needs some initial basic configuration in order to enable management, security and some other important features.

How to configure a cisco switch software from scratch? Basic steps help you finish the Cisco switch configuration.

STEP1:Connect to the device via console

Use a terminal emulation software such as PuTTY and connect to the console of the switch. You will get the initial command prompt “Switch>”

Type “enable” and hit enter. You will get into privileged mode (“Switch#”) 

Now, get into Global Configuration Mode:

Switch# configure terminal
Switch(config)#

STEP2: Set up a hostname for the particular switch to distinguish it in the network

Switch(config)# hostname access-switch1
access-switch1(config)#

STEP3: Configure an administration password (enable secret password)

access-switch1(config)# enable secret somestrongpass

STEP4: Configure a password for Telnet access

access-switch1(config)# line vty 0 15
access-switch1(config-line)# password strongtelnetpass
access-switch1(config-line)# login
access-switch1(config-line)# exit
access-switch1(config)#

STEP5: Define which IP addresses are allowed to access the switch via Telnet

access-switch1(config)# ip access-list standard TELNET-ACCESS
access-switch1(config-std-nacl)# permit 10.1.1.100 refurbished cisco switches
access-switch1(config-std-nacl)# permit 10.1.1.101
access-switch1(config-std-nacl)# exit

!Apply the access list to Telnet VTY Lines
access-switch1(config)# line vty 0 15
access-switch1(config-line)# access-class TELNET-ACCESS in
access-switch1(config-line)# exit
access-switch1(config)#

STEP6: Assign IP address to the switch for management

!Management IP is assigned to Vlan 1 by default
access-switch1(config)# interface vlan 1
access-switch1(config-if)# ip address 10.1.1.200 255.255.255.0
access-switch1(config-if)# exit
access-switch1(config)#

STEP7: Assign default gateway to the switch

access-switch1(config)# ip default-gateway 10.1.1.254

STEP8: Disable unneeded ports on the switch

! This step is optional but enhances security
! Assume that we have a 48-port switch and we don’t need ports 25 to 48

access-switch1(config)# interface range fe 0/25-48
access-switch1(config-if-range)# shutdown
access-switch1(config-if-range)# exit
access-switch1(config)#

STEP9: Save the configuration

access-switch1(config)# wr

The above are some steps that can be followed for basic set-up of a Cisco catalyst switch. Of course there are more things you can configure (such as SNMP servers, NTP, AAA etc) but those depend on the requirements of each particular network.

Cisco Catalyst 3560 Series Switches

The Cisco 3560 switch is a line of fixed-configuration, enterprise-class switches that include IEEE 802.3af and Cisco prestandard Power over Ethernet (PoE) functionality in Fast Ethernet and Gigabit Ethernet configurations.
As an ideal access layer switch for small enterprise LAN access or branch-office environments, the cisco ws c3560x 48t s combinesboth 10/100/1000 and PoE configurations for maximum productivity and investment protection while enabling the deployment of new applications such as IP telephony, wireless access, video surveillance, building management systems, and remote video kiosks.
Customers can deploy network wide intelligent services-such as advanced quality of service (QoS), rate limiting, access control lists (ACLs), multicast management, and high-performance IP routing-while maintaining the simplicity of traditional LAN switching.
The Cisco Catalyst 3560 is part of a larger and more scalable family of Cisco Catalyst switches that includes the Cisco Catalyst 3560-E Series switches, the Cisco Catalyst 3750 and 3750-E Series switches with Cisco StackWise technology, and the Cisco Catalyst 4500 and Catalyst 6500 modular switches. United by Cisco IOSSoftware, the entire family offers industry-leading availability, integrated security, optimized delivery, and manageability.
Software
The cisco ws c3560x 48t l is available with one of two software images:
IP Base software includes advanced quality of service (QoS), rate limiting, access control lists (ACLs), Open Shortest Path First (OSPF) for routed access, and IPv6 functionality.
IP Services software provides a broader set of enterprise-class features, including advanced hardware-based IP Unicast and IP Multicast routing, as well as policy-based routing (PBR).
Simple Network Management
Available for the cisco catalyst 3560e, the Cisco Network Assistant is a centralized management application for switches, routers, and wireless access points. Free of charge, the application provides configuration wizards that greatly simplify the implementation of converged networks and intelligent network services.
Quick Look at Some Cisco Catalyst 3560 Models
WS-C3560G-48PS-S:Port Speed: 10/100 with IEEE 802.3af and Cisco pre-standard PoE
48 ports
Uplinks: 4 SFP-based ports
Software Image: IP Base
WS-C3560G-24PS-S:Port Speed:10/100/1000 with IEEE 802.3af and Cisco prestandardPoE
24 ports
Uplinks: 4 SFP-based ports
IP Base
WS-C3560G-48TS-S:Port Speed: 10/100/1000
48 ports
Uplinks: 4 SFP-based ports
Software Image: IP Base
WS-C3560G-24TS-S:Port Speed: 10/100/1000
    24 ports
    Uplinks: 4 SFP-based ports
    Software Image: IP Base
More Cisco 3560 Switch Related
ws c3560e 48pd sf Series Switches:an enterprise-class line of standalone access and aggregation switches that ease the deployment of secure converged applications.
These switches combine 10/100/1000 and Power over Ethernet (PoE) configurations with uplinks that easily upgrade from 1 Gb Ethernet cisco ws c3560x 24t s to 10 Gb Ethernet. They enhance worker productivity by enabling applications such as IP telephony, wireless, and video.
Features:
•    Ten-second 10 Gb upgrade
•    Support for 802.11n devices
•    Configurations with up to 20W PoE on all 48 ports
•    Modular fan and power supply for aggregation models
•    Highly available operation: dual hot-swappable modular power supplies and fans for fixed aggregation switches
•    Secure unified network services
•    Cisco EnergyWise technology
For further Cisco 3560 series switches’ specs, price, software, configuration, service, etc. Please visit Cisco Catalyst 3560 Series Switch at router-switch.com…

How to Configure a Cisco 3750 Switches?

Cisco's Catalyst 3750 is a wireless local area network (LAN) controller switch designed for use in commercial or other large-scale networks. It sports 24 Ethernet ports and supports connections to up to 25 wireless access points, enabling computers connected to it, or members of any wireless access point's network connected to it, to connect to each other. The Cisco 3750 thus functions as part of a larger networking system, potentially connecting hundreds or thousands of computers over a wide area. The configuration options for such a switch are myriad, but Cisco's Express Setup configuration tool will help you nail down the basics.

Box Contents of Cisco 3750 Series While buying

cisco 3750 switch

Guide to Configure Cisco 3750(Tips: Ethernet cable you'll need)

Step1.Disconnect any computers or other devices from the switch and unplug the switch's power supply.

Step2. Reconnect the switch's power supply to a grounded AC outlet. The switch's indicator lights will flash while it performs a self-test. Wait until the "SYST" light on the switch turns solid green, indicating the test is complete. This can take several minutes.

Step3. Hold the "Mode" button for three seconds, until the LEDs left of the "Mode" button turn green, and then release it. The "Mode" button is in the bottom-left corner of the switch.

Step4.Connect an Ethernet cable to any of the switch's Ethernet ports and plug the other end into your computer. WS-C3750V2-48PS-E Check that the lights on the switch and your computer's Ethernet card are green and wait 30 seconds.

Step5.Open a web browser on your PC and enter "10.0.0.1" into the address bar. This brings you to the Cisco 3750's Express Setup page.

Step6.Enter "10.0.0.1" into the "IP Address" field of the "Basic Settings" tab. If you are connecting the switch to the Internet through a modem or router, enter the modem or router's IP address in the "Default Gateway" field. The modem or router's IP address should be in its manual.

Step7.Enter a password in the "Switch Password" field, and repeat it in the "Confirm Switch Password" field. This password will be required to access the switch's configuration page in the future.

Step8.Enter a name for the switch and fill in the date, time and time zone information under "Optional Settings" if you wish. Basic configuration is now complete,WS-C3750V2-48TS-E though you may wish to alter some advanced settings as well.

Step9.Click on the "Advanced Settings" tab.

Step10.Click "Enable" beside "Telnet Access" if you plan to use Telnet to manage the switch using a command-line interface. Enter a password into the "Telnet Password" and "Confirm Telnet Password" fields as well.

Step11.Click "Enable" beside "SNMP" to enable Simple Network Management Protocol (SNMP). This option should only be enabled if you plan to manage the switch using CiscoWorks 2000 or another SNMP system. You must enter the "Read Community," "Write Community," "System Contact" and "System Location" information if you enable SNMP.

Step12.Check the "Enable IPv6" box if you wish to enable it. IPv6 features better support for mobile devices like cell phones and PDAs,WS-C3750V2-48TS-S simplified address auto-configuration, and improved data encryption, compared to IPv4. Enabling IPv6 will restart your switch when exiting Express Setup.

Step13．Click "Submit" to save and apply your settings. Your Cisco 3750 should now be configured and ready to install in your service network.

Cisco 1800 Series router, Business Router for Small to Medium Sized Business/Enterprise

cisco 1800 router Series Integrated Services Routers, the next evolution of the award-winning Cisco 1700 Series modular access routers, own more advantages than the formers. Cisco 1800 series, ideal for small to medium-sized businesses and small enterprise branch offices, cisco 1800 price enable businesses to reduce costs by deploying a single, resilient system for fast, secure, delivery of multiple mission-critical business services, including data, security, unified communications, wireless.

Cisco 1800 series router has several models including 1801, 1802, 1803, 1811, 1812, 1841(most popular), 1861, all of them have some common features: a. Designed for small businesses or branch offices and to offer secure wireless networking; b. Multiple performance options based on local, remote, cisco 1800 router price or broadband connections; c. Integrated security including encryption and protection against hackers; d. Virtual private networks for linking to partners, suppliers, and remote offices; e. Multiple options for adding reliability and option for reduced costs by using power from network cabling; f. Software upgrades to add new features and functions, and integrated switching capabilities.

Cisco 1800 series router has several models including 1801, 1802, 1803, 1811, 1812, 1841(most popular), 1861. You can check details of every type as follows:

The fixed platform models (1801, 1802, 1803, 1811, 1812) include multiple WAN interface options, plus:

• Up to broadband speeds
• Eight 10/100 Mbps built-in switch ports with optional Power over Ethernet (PoE), for providing DC power to network devices such as IP phones
• Up to 50 VPN tunnels
• Support for wireless local-area network (LAN) standards 802.11a/b/g

The 1841 is a modular platform with a wide range of interface options, plus:

• Up to T1/E1speeds
• Up to four 10/100 Mbps built-in switch ports
• Up to 800 VPN tunnels cisco 1800 IOS
• Support for wireless local-area network (LAN) standards 802.11a/b/g

The 1861 is a modular platform built on a fixed base with a wide range of WAN interface options, plus: 

• Integrated Cisco Unified Communications Manager Express or Cisco Unified Survivable Remote Site Telephony for call processing
• Cisco Unity Express, for voice messaging and automated attendant
• Integrated LAN switching with Power over Ethernet (PoE) expandable through Cisco Catalyst Switches
• Onboard voice ports for PSTN, PBX, and key system connections

With Cisco 1800 Series integrated services routers; you can lay the foundation for future growth and prepare for voice, video, wireless, and security solutions tomorrow. cisco 1800 software

If you want to know more about e about the certain type of Cisco 1800 series, you can visit the list of Cisco 1800 router series, prices also offered.

Cisco 1800 Series Models Details…

1800 Series Model	Key Benefits	Type of Connection	Numberof VPN Users
1801	Provide secure access to the Internet and reduce costs by enabling deployment of a single device to provide multiple services typically performed by separate devices	Broadband over traditional phone lines	50
1802	Provide secure access to the Internet and reduce costs by enabling deployment of a single device to provide multiple services typically performed by separate devices	Broadband over ISDN lines	50
1803	Provide secure access to the Internet and reduce costs by enabling deployment of a single device to provide multiple services typically performed by separate devices	Broadband	50
1811	Provide secure access to the Internet and reduce costs by enabling deployment of a single device to provide multiple services typically performed by separate devices	Ethernet, Fast Ethernet	50
1812	Provide secure access to the Internet and reduce costs by enabling deployment of a single device to provide multiple services typically performed by separate devices	Ethernet, Fast Ethernet	50
1841	Highly expandable for addition of other network capabilities	Broadband, Ethernet, Fast Ethernet	800
1861	Modular design allows for addition of other network capabilities	Ethernet, Fast Ethernet	Up to 8

Cisco Catalyst 3560 Series Switches

The WS-C3560-8PC-S is a line of fixed-configuration, enterprise-class switches that include IEEE 802.3af and Cisco prestandard Power over Ethernet (PoE) functionality in Fast Ethernet and Gigabit Ethernet configurations.

As an ideal access layer switch for small enterprise LAN access or branch-office environments, the WS-C3560-12PC-S combines both 10/100/1000 and PoE configurations for maximum productivity and investment protection while enabling the deployment of new applications such as IP telephony, wireless access, video surveillance, building management systems, and remote video kiosks.

Customers can deploy network wide intelligent services-such as advanced quality of service (QoS), rate limiting, access control lists (ACLs),WS-C3560-48PS-E multicast management, and high-performance IP routing-while maintaining the simplicity of traditional LAN switching.

The WS-C3560-48TS-E is part of a larger and more scalable family of Cisco Catalyst switches that includes the Cisco Catalyst 3560-E Series switches, the Cisco Catalyst 3750 and 3750-E Series switches with Cisco StackWise technology, and the Cisco Catalyst 4500 and Catalyst 6500 modular switches. United by Cisco IOS Software, the entire family offers industry-leading availability, integrated security, optimized delivery, and manageability.

Software
The WS-C3560-24TS-E switch is available with one of two software images:
IP Base software includes advanced quality of service (QoS), rate limiting, access control lists (ACLs), Open Shortest Path First (OSPF) for routed access, and IPv6 functionality.
IP Services software provides a broader set of enterprise-class features, including advanced hardware-based IP Unicast and IP Multicast routing, as well as policy-based routing (PBR).

Simple Network Management
Available for the WS-C3560-24PS-E, the Cisco Network Assistant is a centralized management application for switches, routers, and wireless access points. Free of charge, the application provides configuration wizards that greatly simplify the implementation of converged networks and intelligent network services.

Quick Look at Some Cisco Catalyst 3560 Models

WS-C3560E-24TD-E: Port Speed: 10/100 with IEEE 802.3af and Cisco pre-standard PoE
48 ports
Uplinks: 4 SFP-based ports
Software Image: IP Base

WS-C3560G-24PS-S: Port Speed: 10/100/1000 with IEEE 802.3af and Cisco prestandard PoE
24 ports
Uplinks: 4 SFP-based ports
IP Base

WS-C3560G-48TS-S: Port Speed: 10/100/1000
48 ports
Uplinks: 4 SFP-based ports
Software Image: IP Base
WS-C3560G-24TS-S: Port Speed: 10/100/1000
24 ports
Uplinks: 4 SFP-based ports
Software Image: IP Base

More Cisco 3560 Switch Related
WS-C3560E-48TD-E Series Switches: an enterprise-class line of standalone access and aggregation switches that ease the deployment of secure converged applications.

These switches combine 10/100/1000 and Power over Ethernet (PoE) configurations with uplinks that easily upgrade from 1 Gb Ethernet to 10 Gb Ethernet. They enhance worker productivity by enabling applications such as IP telephony, WS-C3560E-24PD-E wireless, and video.

Features:
Ten-second 10 Gb upgrade
Support for 802.11n devices WS-C3560E-48PD-SFConfigurations with up to 20W PoE on all 48 ports
Modular fan and power supply for aggregation models
Highly available operation: dual hot-swappable modular power supplies and fans for fixed aggregation switches
Secure unified network services
Cisco EnergyWise technology

For further WS-C3560E-48PD-E switches' info of specs, price, software, configuration, service, etc. Please visit Cisco Catalyst 3560 Series Switch at RouteSwitch.com %u2026

Cisco 3945 Series Router, For Small to large Office and Enterprise

The buy cisco 3900 series, designed to power the next phase of branch-office evolution, builds on the best-in-class offering of the existing Cisco 3800 Series Integrated Services Routers by now offering four platforms: the Cisco 3945E, Cisco 3925E , and C3945-WAAS-SEC/K9 Integrated Services Routers.

Cisco 3900 router offers embedded hardware encryption acceleration, voice- and video-capable DSP slots, optional firewall, intrusion prevention, call processing, voicemail, and application services. C3945-VSEC-SRE/K9 In addition, the platforms support the industry's widest range of wired and wireless connectivity options such as T1/E1, T3/E3, xDSL, copper, and fiber Gigabit Ethernet.

And the CISCO3925E-SEC/K9 also offers superior performance and flexibility for flexible network deployments from small business offices to large enterprise offices-all while providing industry-leading investment protection.

The CiscoISR G2 routers provide superior services integration and agility. Designed for scalability, the modular architecture of these platforms enables users to evolve and adapt with your growing business needs. Business benefits of the Cisco 3900 Series router are listed as follows:

Services On-Demand: The  CISCO3925E-V/K9 router reduces initial capital outlays by decoupling the delivery of software from hardware on optional service modules. In addition, you receive a Universal IOS image capable of enabling all of Cisco's rich IOS features and allowing you to quickly deploy new services.

Investment Protection: The Cisco 3900 Series reduces deployment costs and increases flexibility. The platform offers a modular, field upgradable motherboard called the Services Performance Engine (SPE). SPEs allow you to invest in a 3900 Series ISR today and boost its performance later by upgrading to a higher-performance engine. Investment protection is also offered with support for a majority of existing modules from previous-generation ISRs.

Energy Efficiency: The Cisco 3900 architecture includes higher-efficiency power supplies with intelligent power management, with full Cisco EnergyWise feature support in the future. Both ISR 3925 and  CISCO3945E-SEC/K9 routers support dual power supplies for power supply redundancy for branch or retail environments running mission-critical applications.

High Performance: The Cisco 3900 Series router offers significant performance improvements over previous-generation ISRs. CISCO3945E-V/K9

Cisco 3900 with Cisco IOS Software Feature and Protocol High-Level Support

Protocols• IPv4, IPv6, static routes, Open Shortest Path First (OSPF), Enhanced IGRP (EIGRP), Border Gateway Protocol (BGP), BGP Router Reflector, Intermediate System-to-Intermediate System (IS-IS), Multicast Internet Group Management Protocol (IGMPv3), Protocol Independent Multicast sparse mode (PIM SM), PIM Source Specific Multicast (SSM), Distance Vector Multicast Routing Protocol (DVMRP), IPv4-to-IPv6 Multicast, MPLS, Layer 2 and Layer 3 VPN, IPSec, Layer 2 Tunneling Protocol Version 3 (L2TPv3), , Bidirectional Forwarding Detection (BFD), IEEE802.1ag, and IEEE802.3ah

Encapsulations• Generic routing encapsulation (GRE), Ethernet, 802.1q VLAN, Point-to-Point Protocol (PPP), Multilink Point-to-Point Protocol (MLPPP), Frame Relay, Multilink Frame Relay (MLFR) (FR.15 and FR.16), High-Level Data Link Control (HDLC), Serial (RS-232, RS-449, X.21, V.35, and EIA-530), PPP over Ethernet (PPPoE), and ATM

Traffic management• QoS, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), Hierarchical QoS, Policy-Based Routing (PBR), Performance Routing, and NBAR

All in all, the cisco3925/k9 Series offers unparalleled total cost of ownership savings and network agility through the intelligent integration of security, wireless, and application services. If you want more info about Cisco 3900 router, you can visit Cisco’s official site.

Notes: Cisco 3900 Routers’ Models

Product Name	Product Description
CISCO3925/K9	cisco3925 with 3 onboard GE, C3900-SPE100/K9, 4 EHWIC slots, 4 DSP slots, 1 ISM slot, 2 SM slots, 256MB CF default ,1 GB DRAM default ,IP Base
CISCO3945/K9	Cisco 3945 with 3 onboard GE, C3900-SPE150/K9, 4 EHWIC slots, 4 DSP slots, 1 ISM slot, 4 SM slots, 256MB CF default ,1 GB DRAM default ,IP Base
CISCO3925E/K9	Cisco 3925 with 4 onboard GE, C3900-SPE200/K9, 3 EHWIC slots, 3DSP slots, 2 SM slots, 256MB CF default ,1 GB DRAM default ,IP Base
CISCO3945E/K9	Cisco 3945 with 4 onboard GE, C3900-SPE250/K9, 3 EHWIC slots, 3 DSP slots, 4 SM slots, 256MB CF default ,1 GB DRAM default ,IP Base

More price and sales details of Cisco 3900 series router offered at routerswitch.com.

Cisco 3900Series Comparison

http://www.cisco.com/en/US/products/ps10536/prod_series_comparison.html