What is Cisco Routers ISR 1900 Series?

Cisco Routers ISR 1900 Series featured image

The Cisco 1900 series ISRs are an exceptional choice for small branch offices seeking advanced routing capabilities. With a wide range of WAN connectivity options, including T1/E1, xDSL, 3G, 4G LTE, and GE, these routers boast Agile Application Services that enable the hosting of Cisco and third-party applications. These routers are specifically designed to meet the evolving needs of small branches and can quickly transform into cloud-based services, delivering secure and reliable connectivity to branch offices.

The series comprises four models:

  1. Cisco 1905 ISR series 
  2. Cisco 1921 ISR series 
  3. Cisco 1941 ISR series 
  4. Cisco 1941W (wireless) ISR series 

These routers have a modular design that allows for the reuse of current modules, offering investment protection. They also come with embedded hardware encryption acceleration and optional firewall, intrusion prevention, and application services, making them ideal for smaller or medium-sized networks.

What are the features of the Cisco 1900 series router?

The ISRs are advanced routers with hardware encryption, optional firewalls, and intrusion prevention. They integrate with various services and support wired connectivity options. They have built-in interfaces, including two GE ports, console ports, auxiliary ports, and USB flash memory. The series was launched in 2009 and was available until 2020.

How fast is the Cisco 1900 router?

They can handle up to 25 Mbps concurrent services, even in high-speed WAN environments. The router’s modular design allows for customization, and it features slots that support next-generation Enhanced High-Speed WAN Interface Cards, Internal Services Modules, and 2 CompactFlash cards. 

Cisco 1900 series router configuration

It can be configured using interchangeable interface cards and internal service modules. To configure a Cisco 1900 router, you can use the Cisco CLI or Cisco Configuration Professional Express. 

Using the Cisco CLI 

  • Initial CLI Configuration (Required)
  • Configuring the router hostname (Optional)
  • Configuring the Enable and Enable Secret Passwords (Required)
  • Configuring the Console Idle Privileged EXEC Timeout (Optional)
  • Configuring Gigabit Ethernet Interfaces (Required)

Using Cisco Configuration Professional Express 

  • Perform the initial configuration using the Cisco Setup command facility

To configure the Cisco Unified wireless device, use the web browser Cisco Express Setup tool after establishing a console connection and obtaining the BVI IP address. The default IP address for a Cisco Business router is If you can’t remember the IP address, press the reset button on your router for at least 10 seconds while it’s powered on.

What is the baud rate of a Cisco 1900 series?

The USB console ports support multiple baud rates, including 1200 to 9600 bps, and 4 additional speeds. The default is 115200 bps, and the configured speed takes effect only when autobaud is off. The actual data rate depends on the wireless environment.

What is the maximum throughput of Cisco 1905?

The Cisco 1905 router is impressive, with a maximum throughput of 10 Mbps using NAT/VPN and up to 100 Mbps for VPN. Its 12 1-gigabit ports and four dual 1Gb/10Gb ports provide a max throughput of 64 Gbps. It can support up to 20,000 simultaneous IPv4 routes and 6,000 IPv6 routes. Note: performance may decrease if used for anything other than IP routing.

What is the serial port used for a Cisco router?

The Cisco router’s serial port connects asynchronous devices to a computer via an RJ-45 connection. It’s located at the back of the system unit and uses a 12-in-1 Smart Serial connector. Data is transmitted one bit at a time. The default encapsulation method is HDLC, exclusively used by Cisco.

Cisco 1900 series router price

  • Cisco 1921: $295 
  •  CISCO1921-T1SEC/K9 Cisco 1921 Router: $617.2 
  •  CISCO1921-SEC/K9 1921 K9 with 2GE, SEC License: $345