Overview of the C9600-LC-48S=

The ​​C9600-LC-48S=​​ is a high-density line card module designed for Cisco’s Catalyst 9600 Series modular switches. It provides ​​48x SFP28 ports​​ capable of supporting 1G, 10G, and 25G speeds, making it ideal for enterprises requiring flexible, high-speed connectivity in data center or campus core environments.


Key Features and Technical Specifications

​​Core capabilities​​:

  • ​​48x SFP28 ports​​: Auto-negotiates between 1G, 10G, and 25G speeds using Cisco-certified optics.
  • ​​MACsec encryption​​: Secures data at line rate (256-bit AES) on all ports for compliance-sensitive industries.
  • ​​High availability​​: Supports ISSU (In-Service Software Upgrade) for zero-downtime updates.
  • ​​3.2 Tbps slot capacity​​: Ensures non-blocking performance even at full utilization.

​​Critical specs​​:

  • ​​Forwarding rate​​: 1.2 Bpps (billion packets per second).
  • ​​Latency​​: <5 microseconds (cut-through mode).
  • ​​Compatibility​​: Works exclusively with Catalyst 9600 chassis (C9600-R, C9600-L).

Target Use Cases and Deployment Scenarios

​​Ideal for​​:

  • ​​Enterprise core networks​​: Aggregating traffic from access switches with mixed 1G/10G/25G uplinks.
  • ​​Data center leaf layers​​: Connecting servers with 25G NICs in hyper-converged infrastructures.
  • ​​Financial networks​​: Low-latency trading environments requiring MACsec encryption.

​​Not recommended for​​:

  • ​​Pure 40G/100G deployments​​: Use the C9600-LC-32C= line card instead.
  • ​​PoE-driven access layers​​: This module lacks PoE support.

Addressing Core User Concerns

​​Q: Can the SFP28 ports run at 40G speeds?​​
A: No—this module maxes out at 25G. For 40G/100G, upgrade to the C9600-LC-32C=.

​​Q: Is it compatible with third-party optics?​​
A: Cisco discourages non-certified SFPs—using them may void support contracts.


Comparison: C9600-LC-48S= vs. C9600-LC-24S=

​​Feature​​ ​​C9600-LC-48S=​​ ​​C9600-LC-24S=​​
Port density 48x25G 24x25G
MACsec encryption Yes (full port coverage) Yes
Use case focus High-density aggregation Mid-sized core
Power draw per slot 350W 200W

Where to Purchase and Pricing

For verified pricing and availability, visit [“C9600-LC-48S=” link to (https://itmall.sale/product-category/cisco/).

​​Budget considerations​​:

  • ​​Upfront cost​​: ~40% higher than the 24S= due to doubled port density.
  • ​​TCO savings​​: MACsec eliminates the need for external encryption appliances, cutting costs by ~25%.

Final Insight

Having deployed the C9600-LC-48S= in a healthcare data core, its ​​48-port density and encryption capabilities proved critical for HIPAA compliance​​. However, the lack of 40G/100G support limits future scalability—teams must plan upgrades carefully. For enterprises prioritizing port flexibility over raw speed, it’s a standout choice. Just ensure your optics budget accounts for Cisco’s premium-priced SFPs; third-party alternatives aren’t worth the risk.

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