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  »  CISCO 1921/k9

CISCO 1921/k9 with (2) RJ-45 onboard LAN/WAN 10/100/1000 ports 256MB USB flash memory (internal): Default/maximum
Manufacturer: CISCO
Product Name: CISCO 1921/k9
More Info: External link

  Product Overview
The Cisco 1921 builds on the best-in-class offering of the Cisco 1841 Integrated Services Routers. All Cisco 1900 Series Integrated Services Routers offer embedded hardware encryption acceleration, optional firewall, intrusion prevention, and advanced security services. In addition, the platforms support the industry's widest range of wired and wireless connectivity options such as Serial, T1/E1, xDSL, Gigabit Ethernet, and third-generation (3G) wireless

 Architecture and Modularity

The Cisco 1921 is architected to meet the application demands of today's branch offices with design flexibility for future applications. The modular architecture is designed to support expanding customer requirements, increased bandwidth, and fully integrated power distribution to modules supporting 802.3af PoE and Cisco Enhanced PoE (ePoE).

 Modularity Features and Benefits
The Cisco 1921 provides significantly enhanced modular capabilities (refer to Table 3) that offer you investment protection. Most of the modules available on previous generations of Cisco routers, such as the Cisco 1841 ISR, are supported on the Cisco 1921. Additionally, you can easily interchange modules used on the Cisco 1921 with other Cisco routers to provide maximum investment protection. Taking advantage of common interface cards across a network greatly reduces the complexity of managing inventory requirements, implementing large network rollouts, and maintaining configurations across a variety of branch-office sizes.
A complete list of supported modules is available at http://www.cisco.com/go/1921.

 Cisco IOS Software
The Cisco 1921 Integrated Services Routers deliver innovative technologies running on industry-leading Cisco IOS Software. Developed for wide deployment in the world's most demanding enterprise, access, and service provider networks, Cisco IOS Software Releases 15M and T support a comprehensive portfolio of Cisco technologies, including new functions and features delivered in Releases 12.4 and 12.4T, and new innovations that span multiple technology areas, including security, high availability, IP Routing and Multicast, quality of service (QoS), IP Mobility, Multiprotocol Label Switching (MPLS), VPNs, and embedded management.

 Integrated Network Security for Data and Mobility

Security is essential to protect a business' intellectual property while also ensuring business continuity and providing the ability to extend the corporate workplace to employees who need anytime, anywhere access to company resources. As part of the architectural framework of the SAFE Blueprint from Cisco that allows organizations to identify, prevent, and adapt to network security threats, the Cisco 1900 Series ISRs facilitate secure business transactions and collaboration.
The Cisco IOS Software Security technology package license for the Cisco 1900 Series offers a wide array of common security features such as advanced application inspection and control, threat protection, and encryption architectures for enabling more scalable and manageable VPN networks in one solution set. The Cisco 1921 offers native hardware-based encryption acceleration to provide greater IPsec throughput with less overhead for the router processor when compared with software-based encryption solutions. Cisco ISRs offer a comprehensive and adaptable security solution for branch-office routers that include features such as:


  • Secure connectivity: Achieve secure collaborative communications with Group Encrypted Transport VPN, Dynamic Multipoint VPN (DMVPN), or Enhanced Easy VPN.
  • Integrated threat control: Respond to sophisticated network attacks and threats using Cisco IOS Firewall, Cisco IOS Zone-Based Firewall, Cisco IOS IPS, and Cisco ScanSafe Web Security and Flexible Packet Matching (FPM).
  • Identity management: Intelligently protect endpoints using technologies such as authentication, authorization, and accounting (AAA) and public key infrastructure (PKI).

Detailed information about the security features and solutions supported on the Cisco 1900 Series routers is available here.

Product Specifications of Cisco 1921 Integrated Services Router

 Cisco 1921 Integrated Services Router


Services and Slot Density

Embedded hardware-based cryptography acceleration (IPsec + SSL)


RJ-45 onboard LAN/WAN 10/100/1000 ports


EHWIC slots


Doublewide EHWIC slots (use of a doublewide EHWIC slot will consume 2 EHWIC slots)


Cisco Integrated Services Module (ISM) slots


Memory (DDR2 DRAM): Default/maximum

512 MB/512 MB

USB flash memory (internal): Default/maximum

256 MB/256 MB

External USB flash-memory slots (Type A)


USB console port (mini-Type B) (up to 115.2 kbps)


Serial console port (up to 115.2 kbps)


Serial auxiliary port (up to 115.2 kbps


Integrated power supply

AC and DC power-supply models

Power-supply options

POE (external) - on AC models only

Redundant-power-supply support


Power Specifications

AC input voltage

100-240V ~

AC input frequency

47-63 Hz

AC input current range AC power supply (maximum) (amps)


AC input surge current


Typical power (no modules)


Maximum power capacity with AC power supply


Maximum power capacity with PoE power supply (platform only)


Maximum PoE device power capacity with PoE power supply


DC power input

32-60 VDC, 4A, positive or negative, single source

DC input wire size

AWG 14 (2.0 mm2)

Safety ground-wire size

AWG 14 (2.0 mm2), minimum

Wire terminal (lug)

Amp/Tyco No.32957

Overcurrent protection

20A maximum

Physical Specifications

Dimensions (H x W x D)

1.75 x 13.5 x 11.5 in. (4.45 x 34.29 x 29.21 cm)

Rack height

1 rack unit (1RU)

Rack-mount 19 in. (48.3 cm) EIA


Wall-mount (refer to installation guide for approved orientation)


Weight: With AC power supply (no modules)

6.75 lb

Weight: With PoE power supply (no modules)

7.5 lb


Back to sides

Environmental Specifications

Operating Conditions


Temperature: 5906 ft (1800m) maximum altitude

32-104°F (0-40°C)

Temperature: 9843 ft (3000m) maximum altitude

32-77°F (0-25°C)


10,000 ft (3,000m)


10 to 85% relative humidity (RH)

Acoustic: Sound pressure (typical/maximum)

32.99/58.33 dBA

Acoustic: Sound power (typical/maximum)

41.99/67.22 dBA

Transportation and Storage Conditions


-40 to 158°F (-40 to 70°C)


5 to 95% RH


15,000 ft (4,570m)

Regulatory Compliance


UL 60950-1

CAN/CSA C22.2 No. 60950-1

EN 60950-1

AS/NZS 60950-1

IEC 60950-1


47 CFR, Part 15

ICES-003 Class A

EN55022 Class A

CISPR22 Class A

AS/NZS 3548 Class A


EN 300-386

EN 61000 (Immunity)

EN 55024, CISPR 24





ANSI T1.101

IEEE 802.3

RTTE Directive

 Supported Modules
Cisco 1921 Integrated Services Routers support a wide range of modules that span industry-leading breadths of services at the branch office. Please refer to the following link for the list of modules supported on the Cisco 1900: http://www.cisco.com/en/US/products/ps10538/products_relevant_interfaces_and_modules.html.