What is the default IP address for Cisco ISR 4331 (ISR4331/K9)?

The factory default IP address for Cisco ISR 4331 (ISR4331/K9) is http://192.168.1.1.

What is the default username and password for Cisco ISR 4331 (ISR4331/K9)?

The default username is "cisco" and the default password is "cisco".

How do I factory reset the Cisco ISR 4331 (ISR4331/K9)?

Locate the small Reset pinhole on the back panel of the Cisco ISR 4331 (ISR4331/K9). Press and hold it with a paperclip for 10-15 seconds while powered on until the LED lights cycle.

Cisco Enterprise Core N/A (Wired Gateway) 100M-300M Modular Enterprise Router

Cisco ISR 4331 (ISR4331/K9)

Medium enterprise campuses requiring voice, security, and WAN acceleration in 1U rack

Open http://192.168.1.1 ↗

Illustration, not a product photo

Gateway IP

192.168.1.1

Factory Username

cisco

Factory Password

cisco

Technical specifications

ISR 4000 Series

Manufacturer	Cisco
Product Series	ISR 4000 Series
Device Class / Category	Enterprise Core
Wireless Standard	N/A (Wired Gateway)
Speed Rating	100M-300M Modular Enterprise Router
Ethernet & Fiber Ports	3x 1G WAN/LAN (2x SFP, 1x RJ45), 2x NIM, 1x SM-X slot
Routing / Firewall Throughput	300 Mbps Encrypted Services
Default Gateway URL	http://192.168.1.1 ↗
Operating System / Firmware	Cisco IOS-XE

How to log in to your Cisco ISR 4331 (ISR4331/K9)

1 Connect Your Device: Plug your PC into any LAN port on the Cisco ISR 4331 (ISR4331/K9) using an Ethernet cable, or connect to the default Wi-Fi SSID printed on the router label.
2 Navigate to Gateway IP: Launch your web browser and enter http://192.168.1.1 into the address bar.
3 Enter Factory Credentials: Enter username "cisco" and password "cisco", then click Login.
4 Configure Security & Password: Follow the on-screen Quick Setup wizard to customize your Wi-Fi SSID, set WPA3/WPA2-AES encryption, and establish a new master administrator password.

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Frequently asked questions

What is the default login for Cisco ISR 4331 (ISR4331/K9)?

The default IP address is http://192.168.1.1, default username is "cisco", and default password is "cisco".

What ports and speeds does Cisco ISR 4331 (ISR4331/K9) support?

The Cisco ISR 4331 (ISR4331/K9) is equipped with 3x 1G WAN/LAN (2x SFP, 1x RJ45), 2x NIM, 1x SM-X slot with an overall speed rating of 100M-300M Modular Enterprise Router.

How do I reset my Cisco ISR 4331 (ISR4331/K9) to factory settings?

Press and hold the physical Reset button on the Cisco ISR 4331 (ISR4331/K9) for 10 to 15 seconds until the power LED blinks, resetting all settings to factory default.