Question 1

What is Cisco ISR 900 series router?

Accepted Answer

The Cisco ISR 900 series is a compact, fanless branch router offering secure WAN connectivity, integrated security, and SD-WAN capabilities for small offices, retail, and IoT applications.

Question 2

What key features and benefits does ISR 900 offer?

Accepted Answer

It delivers up to 50–100 Mbps throughput, four Gigabit Ethernet ports, optional LTE, PoE, onboard storage, and embedded security, reducing hardware footprint and simplifying branch deployments.

Question 3

Which models are available in the ISR 900 series?

Accepted Answer

The series includes ISR 910, 920, 925, and 930 models, each varying in port count, performance, PoE support, and optional LTE modules to suit diverse branch requirements.

Question 4

What performance levels can I expect from the ISR 900 router?

Accepted Answer

The ISR 900 supports 50–100 Mbps of encrypted throughput, up to 500 IPsec tunnels, and wire-speed routing, making it ideal for small branch networks and SD-WAN deployments.

Question 5

What interfaces are supported on Cisco ISR 900 routers?

Accepted Answer

Interfaces include up to four Gigabit Ethernet ports, optional PoE, SFP, serial, USB, and LTE modules, enabling flexible WAN/LAN connections for diverse network topologies.

Question 6

Does the ISR 900 series support Cisco SD-WAN?

Accepted Answer

Yes, Cisco ISR 900 runs IOS XE with built-in Cisco SD-WAN support, enabling policy-based routing, secure segmentation, and centralized management via Cisco vManage.

Question 7

What power options and PoE capabilities does the ISR 900 provide?

Accepted Answer

The fanless ISR 900 operates on AC/DC power options, consumes less than 15 W idle, and offers optional 802.3af/at PoE on select models to power devices directly.

Question 8

Which routing and switching protocols are supported?

Accepted Answer

ISR 900 supports BGP, OSPF, EIGRP, RIP, static routing, MPLS L3VPN, VLANs, QoS, and policy-based routing to ensure comprehensive branch network functionality.

Question 9

What licensing options are available for Cisco ISR 900?

Accepted Answer

Licensing tiers include Network Essentials and Network Advantage, providing incremental features for advanced security, SD-WAN, VPN, and application visibility to match deployment needs.

Question 10

What built-in security features does the ISR 900 series include?

Accepted Answer

Embedded security features include zone-based firewall, IPS, VPN (IPsec and SSL), secure boot, TrustSec, and URL filtering to protect branch networks from threats.

Question 11

How can I manage and configure the ISR 900 router?

Accepted Answer

Management options include Cisco DNA Center, Cisco Prime Infrastructure, CLI, RESTCONF/NETCONF, and Web UI for zero-touch provisioning and full lifecycle automation.

Question 12

Can I add service modules to Cisco ISR 900?

Accepted Answer

Yes, the platform supports plug-and-play service modules for Wi-Fi, LTE, SFP, and security acceleration, enabling customized functionality without increasing footprint.

Question 13

What are the primary deployment use cases for ISR 900?

Accepted Answer

Ideal for small branch offices, retail kiosks, ATMs, IoT gateways, and micro-branches, the ISR 900 provides secure connectivity, edge computing, and simplified management.

Question 14

How does the ISR 900 compare to the ISR 1000 series?

Accepted Answer

ISR 900 offers lower throughput (50–100 Mbps) and port density versus ISR 1000 (up to 300 Mbps), making it more cost-effective for smaller branch deployments.

Question 15

What is the typical total cost of ownership for ISR 900?

Accepted Answer

With starting list prices around $500, low power consumption, integrated feature set, and simplified operations, the ISR 900 reduces CAPEX and OPEX for small branches.

Question 16

What warranty and support options are available for ISR 900?

Accepted Answer

Cisco offers a one-year limited warranty and optional SMARTnet services for 24/7 support, software updates, and hardware replacement to ensure continuous branch operations.

Networking Cisco Router ISR 900

C921-4P (900 SERIES INTEG SVCS ROUTERS)

C927-4PM (Cisco 927 Gigabit Ethernet security router with VDSL/ADSL2+ Annex M)

C921-4PLTEAS (C921-4P FDD and TDD LTE, ASEAN)

C926-4PLTEGB (GE VDSL2/ADSL2+ over ISDN (non-US) 4G LTE / HSPA+)

C931-4P (Cisco 931 Gigabit Ethernet security router with internal power supply)

C927-4P (Cisco 927 Gigabit Ethernet security router with VDSL/ADSL2+ Annex A)

C926-4P (Cisco 926 Gigabit Ethernet security router with VDSL/ADSL2+ Annex B/J)

C921J-4P (Cisco 921J Gigabit Ethernet security router with external power supply for Japan only)

C931J-4P (Cisco 931 Series ISR model)

C941J-4P (Cisco 941 Series ISR model)

Questions & Answers

What is Cisco ISR 900 series router?

What key features and benefits does ISR 900 offer?

Which models are available in the ISR 900 series?

What performance levels can I expect from the ISR 900 router?