Cisco C9300LM-48U-4Y-A: How Does Modular Uplink Design Optimize Enterprise Network Scalability?

Overview of the C9300LM-48U-4Y-A

The ​​Cisco Catalyst 9300LM-48U-4Y-A​​ is a ​​modular Layer 3 switch​​ engineered for enterprises seeking ​​flexible uplink configurations​​ and ​​high-density access-layer performance​​. Part of Cisco’s Catalyst 9300LM series, this model combines ​​48x1G RJ45 ports​​, ​​4x10G SFP+ uplinks​​, and modular expansion capabilities to support evolving bandwidth and security demands.

Key Technical Specifications

• ​​Port Configuration​​: 48 x 10/100/1000BASE-T ports, 4 x 10G SFP+ uplinks (supports 1G/10G optics).
• ​​Modular Uplinks​​: ​​Field-replaceable Network Modules​​ for future upgrades to 25G/40G/100G speeds.
• ​​Stacking​​: ​​StackWise-320​​ technology for up to 8 switches in a stack (3.2 Tbps bandwidth).
• ​​Security​​: ​​Cisco TrustSec​​, MACsec-256 encryption, and Secure Boot for end-to-end data integrity.
• ​​Licensing​​: Includes ​​Cisco DNA Essentials​​ for basic automation and assurance features.

Addressing Core User Concerns

​​Q: What advantages does the modular design offer over fixed uplink switches?​​
The ​​field-replaceable uplink modules​​ allow organizations to upgrade uplink speeds (e.g., from 10G to 40G) without replacing the entire switch, reducing long-term costs and e-waste.

​​Q: Is this switch suitable for high-security environments?​​
Yes. ​​MACsec-256​​ encrypts data between switches at wire speed, while ​​Cisco’s Identity Services Engine (ISE)​​ integration ensures policy enforcement for devices and users.

​​Q: Can it handle growing IoT or cloud traffic?​​
With ​​StackWise-320​​, businesses can scale bandwidth to 3.2 Tbps, while the modular uplinks ensure readiness for future high-speed WAN or data center interconnects.

Optimal Deployment Scenarios

• ​​Enterprise Campus Networks​​: Connects endpoints in office environments with optional PoE+ via add-on modules.
• ​​Distributed Branches​​: Aggregates traffic from remote sites with secure, encrypted uplinks.
• ​​IoT Edge Gateways​​: Manages traffic from sensors and cameras, with optional uplink upgrades for analytics backhaul.

Where to Purchase the C9300LM-48U-4Y-A

For enterprises prioritizing modular flexibility, ​​“C9300LM-48U-4Y-A”​​ is available at itmall.sale’s Cisco category. Confirm uplink module compatibility based on future network plans.

Final Perspective

The C9300LM-48U-4Y-A bridges the gap between ​​current 1G/10G needs​​ and ​​future high-speed requirements​​, making it ideal for cost-conscious enterprises. While its base configuration focuses on access-layer density, the modular uplinks empower IT teams to defer costly infrastructure overhauls. For networks balancing ​​today’s demands​​ with ​​tomorrow’s unknowns​​, this switch is a strategic enabler of agility and resilience.