Cisco C1121X-8PLTEP Cellular, Ethernet Modem/Wireless Router

The Cisco C1121X-8PLTEP is a compact, multi-service platform designed for modern branch offices, distributed sites, and retail environments. Built on the Cisco 1000 Series Integrated Services Routers (ISRs) with Cisco IOS XE Software, this device combines reliable Internet access, robust security, and high‑speed wireless services in a single, high‑performance unit. It delivers seamless integration of LTE Advanced 3.0 wireless WAN connectivity with a feature-rich wired and wireless LAN, empowering organizations to deploy, manage, and scale their networks with ease. Whether you need dependable primary connectivity, resilient backup WAN, or secure wireless access for employees and customers, the C1121X-8PLTEP is engineered to simplify deployment and reduce total cost of ownership through unified management and streamlined operations.

• All‑in‑one ISR for modern networks: Experience a single device that combines router functionality, security features, VPN capacity, and wireless access into a compact form factor. Cisco IOS XE Software brings a unified, scalable platform for config, monitoring, and policy enforcement, helping you protect and optimize traffic across branch networks.
• Integrated LTE Advanced 3.0 wireless WAN: Rely on a built‑in cellular modem for reliable WAN connectivity, automatic failover, and backup paths when traditional fiber or cable links are temporarily unavailable. This capability is ideal for remote sites, mobile deployments, and locations with variable terrestrial connectivity, ensuring critical services stay online.
• High‑performance wireless LAN with strong security: The device includes 802.11ac wireless LAN capabilities to deliver solid, enterprise‑grade wireless coverage for devices, laptops, and IoT endpoints. Coupled with Cisco security features, guest networks, and segmentation options, it helps protect your network perimeter while delivering fast, consistent wireless throughput.
• Flexible Ethernet and remote management: Multiple Ethernet interfaces and straightforward network integration enable easy attachment to existing switches, routers, and devices. Centralized management options and a familiar Cisco command‑line interface (CLI) promote quick onboarding, efficient troubleshooting, and scalable growth as your network evolves.
• Designed for uptime, security, and efficiency: Built to support enterprise‑grade security, policy enforcement, and reliable performance at branch sites, the C1121X-8PLTEP helps reduce the complexity of secure remote access, site survivability, and end‑user experience without compromising on control or visibility.

Technical Details of Cisco C1121X-8PLTEP

• Integrated platform: Cisco 1000 Series ISR architecture with Cisco IOS XE Software, delivering inline security, WAN services, and wireless capabilities in a single device.
• Wireless WAN capability: LTE Advanced 3.0 wireless WAN support provides cellular backup or primary Internet connectivity when wired options are unavailable.
• Wireless LAN: 802.11ac wireless LAN to deliver robust Wi‑Fi coverage for end devices and IoT endpoints at the site.
• Security and policy: Advanced security features, firewall capabilities, VPN support, and traffic segmentation to protect enterprise data and applications.
• Management and deployment: Field‑friendly deployment with a familiar Cisco IOS XE interface for CLI and web‑based configuration, enabling rapid setup, monitoring, and ongoing maintenance.

How to install Cisco C1121X-8PLTEP

Installing the Cisco C1121X-8PLTEP is designed to be straightforward and efficient, whether you are provisioning it in a new site or integrating it into an established network. Begin by selecting a suitable mounting location with good ventilation and access to power, cellular signal, and network cabling. If your deployment includes cellular access, ensure the SIM is properly seated in the dedicated slot and that any required carrier settings or APN configurations are prepared in advance. Prepare your wired network by identifying the primary WAN path and any backup links to be used for automatic failover. Gather the necessary management credentials and ensure you have access to the Cisco IOS XE management interface for initial configuration. After powering on the device, follow these general steps to complete a secure, production‑ready configuration:

• Power up and verify hardware: Connect the device to a power source and confirm that LEDs indicate normal operation. Check the console or management console to verify device recognition and basic boot status.
• Connect WAN and local network: Attach your primary Ethernet WAN link and, if applicable, a secondary WAN connection for failover. Connect local devices or a switch to the Ethernet ports as needed for LAN access.
• Insert SIM and configure cellular settings: If using the LTE WAN, insert the SIM card, select the correct carrier settings, and configure APN and authentication as required by your cellular provider.
• Access the management interface: Open the Cisco IOS XE web UI or connect via the CLI to begin initial configuration. Verify connectivity to the Internet and ensure wireless settings are prepared for deployment.
• Configure security and wireless: Set up firewall rules, VPNs, and access control policies. Create a wireless SSID, select appropriate security (WPA2/WPA3 as supported), and configure guest networks or VLANs as needed for segmentation.
• Enable monitoring and backups: Enable logging, SNMP or telemetry, and define backup configurations. Schedule regular backups of configurations to a secure repository or cloud service if available.
• Test failover and performance: Validate WAN failover by simulating a primary link outage and confirming seamless traffic redirection to the cellular WAN. Run throughput and latency tests to verify that performance meets your site requirements.
• Document and secure: Record all settings, including SSIDs, VPNs, and policy rules. Change default passwords, enable firmware updates, and apply the latest security patches to maintain protection against threats.

Frequently asked questions

Below are common questions about the Cisco C1121X-8PLTEP to help buyers understand how this device fits into their network strategy and operational needs. If you do not see a question here, you can reach out to Cisco support or consult the official product documentation for deeper technical guidance.

What is the Cisco C1121X-8PLTEP?
The C1121X-8PLTEP is a Cisco 1000 Series ISR device that combines an Ethernet modem and wireless router with an integrated LTE Advanced 3.0 wireless WAN and 802.11ac wireless LAN. It runs Cisco IOS XE Software and is designed for secure, scalable, and easy deployment at branch sites and remote locations.

Can this device be used as a primary Internet connection or only as a backup?
The C1121X-8PLTEP supports both primary Internet connectivity through wired WAN and cellular as a backup or secondary WAN. The flexible WAN options allow you to architect redundancy and improve uptime, which is especially valuable for locations where fiber/cable service may be intermittent or temporarily unavailable.

What security features does it include?
It includes enterprise‑grade security features built into Cisco IOS XE, including firewall rules, VPN support, traffic segmentation, and policy enforcement to protect data as it traverses your network. Regular updates and secure boot capabilities help defend against evolving threats.

How is the device managed?
Management is conducted through Cisco IOS XE, offering a familiar CLI and web‑based configuration interface. It supports local management at the device plus potential centralized management workflows through compatible Cisco management tools, enabling consistent policy application across multiple sites.