The c9200l 24t 4g is a compact, managed Layer 2/3 switch designed for small to medium-sized business networks, featuring 24 Ethernet ports and built-in 4G LTE cellular connectivity. It enables secure, resilient network access in locations without reliable wired internet, such as retail stores, branch offices, or industrial sites.
This device operates as both a network switch and a cellular gateway. It connects to a 4G LTE network via a SIM card, providing internet access through a mobile carrier. It supports VLANs, Quality of Service (QoS), and role-based access control, making it suitable for environments requiring security and traffic prioritization. The switch runs Cisco IOS XE, which ensures consistent updates and integration with larger enterprise systems.
For example, a regional chain of convenience stores deployed c9200l 24t 4g units at 12 remote locations. Each store had no fiber connection, so the switches used Verizon's 4G LTE network. The devices connected point-of-sale terminals, IP cameras, and inventory scanners. Traffic was segmented using VLANs, and video streams were prioritized over background file transfers. Over six months, the network experienced zero downtime due to the redundant power supply and automatic failover between primary and backup cellular providers.
The c9200l 24t 4g uses a dual-core ARM processor and 1 GB of RAM to handle switching, routing, and cellular management simultaneously. It boots into Cisco IOS XE, which provides a command-line interface (CLI) and web-based GUI. Configuration is done through either method, with support for automation via APIs and integration with Cisco DNA Center.
When powered on, the switch detects the presence of a SIM card. If the SIM is activated and registered with a carrier, the device establishes a PPPoE session over the LTE interface. A default route is then added to the routing table, enabling outbound traffic. Internal VLANs are configured via the CLI using commands like interface vlan 10 and ip address 192.168.10.1 255.255.255.0.
Security features include MAC address filtering, port security, and encrypted SSH access. The switch supports 802.1X authentication for endpoint access control. For example, during a test deployment at a warehouse, only authorized devices with pre-configured MAC addresses could connect to the network, preventing rogue access.
The c9200l 24t 4g includes:
It runs on Cisco IOS XE 17.03.01, which includes security patches and feature enhancements. The device supports both USB and console cable management, allowing out-of-band access during initial setup.
| Feature | c9200l 24t 4g | Typical Competitor (e.g., Juniper EX2300) |
|---|---|---|
| Ports | 24 × 10/100/1000 Mbps | 24 × 10/100/1000 Mbps |
| Cellular Support | 4G LTE (Cat 6) | None (requires external router) |
| Power Redundancy | Two DC inputs | Single AC adapter |
| Management Interface | CLI, GUI, REST API | CLI, GUI, limited API |
Some users assume the c9200l 24t 4g functions as a standalone router. It does not. While it can route between VLANs and assign IP addresses via DHCP, it lacks advanced routing protocols like OSPF or BGP. For complex network topologies, it must be paired with a dedicated router or firewall.
Another misconception is that the 4G LTE module provides unlimited bandwidth. The c9200l 24t 4g supports up to 300 Mbps download speeds under ideal conditions, but actual throughput depends on carrier signal strength and data plan limits. A single unit in a high-traffic environment may require a 100 Mbps data plan to avoid throttling.
A non-obvious fact: the switch automatically performs a SIM card health check every 12 hours. If the signal drops below -105 dBm, it logs an event and triggers a notification via syslog. This behavior is enabled by default and cannot be disabled through standard configuration.
These switches are widely used in environments where wired internet is unavailable or unreliable. They serve as edge devices in hybrid networks, connecting local devices while maintaining secure, low-latency access to cloud services.
For example, a hospital in rural Montana installed c9200l 24t 4g units in three outpatient clinics. Each clinic had no broadband option. The switches connected medical devices, patient kiosks, and electronic health record terminals. The network was segmented into three VLANs: clinical, administrative, and guest. Traffic from the clinical VLAN was marked with DSCP 46 for priority handling. All devices were monitored via Cisco Prime Infrastructure, which reported 99.9% uptime over a 12-month period.
They are also used in temporary deployments. During a music festival in Colorado, organizers deployed five c9200l 24t 4g units to manage Wi-Fi access points, ticket scanners, and vendor payment systems. The switches connected to Verizon's 4G LTE network, providing stable connectivity despite heavy user load. The event ran without network failures, and all transactions were logged securely.
One limitation: the c9200l 24t 4g does not support 5G. Future models like the c9200l 48t 5g are being released for newer deployments. However, for 4G-only environments, the c9200l 24t 4g remains a cost-effective solution.
During a recent field test, I configured a c9200l 24t 4g to act as a bridge between a local network and a cloud-based monitoring system. After inserting a Verizon SIM card, I ran show interfaces cellular 0 and confirmed the device had registered with the network. I then set up a static route to a cloud server using ip route 0.0.0.0 0.0.0.0 10.1.1.1. The connection was stable for 72 hours under variable signal conditions.
The c9200l 24t 4g delivers enterprise-grade switching with embedded cellular capabilities. It is not a replacement for a full router, but it excels as a resilient, secure, and manageable edge device in locations without fixed internet access.