The Cisco Catalyst WS-C3750X-24S-S is a high-performance enterprise-class stackable Layer 3 switch designed for organizations requiring 24 Gigabit SFP fiber ports, advanced security, high availability, and scalable backbone connectivity. It is widely deployed in enterprise core/distribution layers, data center aggregation, and fiber-based campus networks where long-distance, high-speed optical connectivity is required.
This model belongs to the Cisco Catalyst 3750-X Series, known for StackWise Plus technology, StackPower support, redundant power supplies, and enterprise-grade resilience.
Key Features
- 24 × Gigabit Ethernet SFP fiber ports (1000BASE-X)
- StackWise Plus technology for multi-switch stacking
- Layer 3 switching with advanced routing capabilities (IP Base / IP Services dependent)
- Switching capacity up to 160 Gbps
- Forwarding rate up to ~101.2 Mpps
- Cisco IOS enterprise feature set (LAN Base / IP Base / IP Services variants)
- Optional 1G / 10G uplink network modules
- StackPower support for shared power redundancy
- Redundant hot-swappable power supplies and fans
- Advanced security: ACLs, 802.1X, DHCP snooping, MACsec
- VLAN support up to 4096 VLANs
- QoS, multicast, and enterprise traffic engineering support
- USB console and storage support for management
- 1U rack-mount enterprise design
Technical Specifications
| Specification | Details |
|---|---|
| Model | WS-C3750X-24S-S |
| Ports | 24 × Gigabit SFP (Fiber) |
| Port Type | 1000BASE-X SFP |
| Switching Capacity | 160 Gbps |
| Forwarding Rate | ~101.2 Mpps |
| Stack Technology | StackWise Plus |
| Power System | StackPower + redundant PSU support |
| RAM | 256 MB |
| Flash | 512 MB (typical variant configs) |
| VLAN Support | Up to 4096 |
| Routing | Layer 3 (license dependent) |
| Uplink Slots | Modular (1G/10G optional) |
| Form Factor | 1U Rack Mount |
| OS | Cisco IOS |
Use Cases
- Enterprise core and distribution switching
- Data center aggregation layer
- Fiber-based campus backbone networks
- CCTV and surveillance fiber backhaul
- ISP edge and metro Ethernet deployments
- High-speed server-to-switch fiber connectivity
External Links & References
- Cisco Catalyst 3750-X Series Overview
https://www.cisco.com/c/en/us/products/switches/catalyst-3750-x-series-switches.html - Cisco Catalyst 3750-X / 3560-X Datasheet
https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3750-x-series-switches/data_sheet_c78-584733.html - SFP Optical Networking Standards (IEEE 802.3)
https://standards.ieee.org/standard/802_3.html
Maintenance & Support
Preventive Maintenance
- Regular Cisco IOS upgrades and security patching
- Fiber optic SFP diagnostics and cleaning
- StackWise health monitoring
- Power supply redundancy testing
- Fan and thermal airflow inspection
Operational Monitoring
- SNMP-based monitoring of ports and stack health
- Syslog event logging and alerting
- VLAN and routing consistency checks
- Bandwidth and optical signal monitoring
- CPU and memory utilization tracking
Lifecycle Support
- Cisco SMARTnet support (if applicable)
- Replacement of power supplies, fans, and SFP modules
- Spare stacking cables and uplink modules planning
- Migration path toward Cisco Catalyst 9300/9500 series
Support & SLA (Service Level Agreement)
Enterprise SLA ensures high availability and resilient network operations:
- Incident Response Time: 1–4 hours (critical infrastructure)
- Hardware Replacement: Next Business Day (NBD options)
- Remote Troubleshooting: Layer 1–3 support
- Configuration Support: VLAN, routing, stacking setup
- Firmware Upgrade Support: Cisco IOS updates
- On-site Support: Available under enterprise contract
- Preventive Maintenance: Quarterly / semi-annual visits
FAQs
1. What is Cisco WS-C3750X-24S-S used for?
It is used for fiber-based enterprise switching, typically in core, distribution, or aggregation layers of a network.
2. Does it support copper Ethernet ports?
No, this model uses 24 SFP fiber ports only, designed for optical connectivity.
3. Can it be stacked with other switches?
Yes, it supports StackWise Plus, allowing multiple switches to operate as a single logical unit.
4. Is this switch Layer 2 or Layer 3?
It supports Layer 3 routing capabilities, depending on installed IOS license (IP Base/IP Services).
5. Is it still used in modern networks?
Yes, but mainly in existing enterprise and ISP environments. New deployments typically use Catalyst 9300/9500 series.
6. What is the main advantage of this model?
It provides high-speed fiber connectivity, stacking capability, and enterprise-grade resilience in a compact 1U form factor.
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