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3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Ports | 24 x 10/100/1000Base-T PoE (802.3af/at) + 4 combo SFP |
| Stacking | 2 dedicated high-speed stacking ports |
| PoE Budget | Supports 802.3af and 802.3at |
| Switching Capacity | 96 Gbps (per switch) |
| Throughput | 71.4 Mpps (per switch) |
| MAC Address Table | High capacity for enterprise use |
| VLAN Support | Advanced 802.1Q |
| Management | CLI, Web, SNMP, stacking management |
| Power | Internal with redundant option |
| Form Factor | 1U rack-mountable |
| Operating Temperature | 0°C to +40°C |
4. Product Introduction
The Enterasys B5G124-24P2 is a B5-Series stackable Gigabit Ethernet switch with 24 PoE+ ports and four combo SFP uplinks. It delivers power and data to IP phones, cameras, and wireless access points while supporting high-speed stacking for simplified management.
In industrial and commercial automation, this switch powers edge devices in converged networks. It handles bandwidth demands from VoIP and video while providing redundancy through stacking and optional RPS. Teams choose it for reliable PoE delivery and straightforward scalability in growing installations.
- B5G124-24P2
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| PoE ports not powering devices | Power budget exceeded | High | Check show power inline command | Reduce connected devices or add RPS |
| No link on copper ports | Cable or negotiation | High | Test cable; view port status | Ensure Cat5e/6 cable; set auto-negotiation |
| SFP ports not active | Incompatible transceiver | Medium | Verify approved SFP modules | Use Enterasys/Extreme qualified optics |
| Stack not forming | Cabling or firmware mismatch | High | Check stack LEDs and show stack command | Use proper stacking cables; match firmware |
| High CPU usage | Broadcast storm | Medium | Monitor with show processes | Enable storm control features |
| Power LED flashing | PSU or overheating | Low | Check temperature and fan status | Ensure ventilation; test redundant supply |
Provide show tech-support output and photos if further assistance is needed.
6. Frequently Asked Questions (FAQ)
Does the B5G124-24P2 support full 802.3at PoE+? Yes, it delivers IEEE 802.3af and 802.3at Power over Ethernet on all 24 ports within the total power budget.
How many switches can I stack? The B5-Series supports stacking of multiple units for up to 768 Gbps aggregate throughput. Use the dedicated stacking ports and cables.
Are the SFP ports combo ports? Yes, the four combo ports share with the last copper ports. Only one type (copper or SFP) is active per combo interface.
Can I use redundant power? Yes, it supports an optional redundant power supply for higher availability in critical applications.
What management features are included? Full Layer 2/3 Lite management with CLI, web interface, SNMP, and centralized stacking management via a single IP address.
What condition are your units? New Original / New Surplus. Each switch undergoes complete functional testing including PoE load testing, port verification, and stacking validation where applicable. Test reports available upon request.
Is this a good replacement for older B-Series switches? It serves as a strong upgrade or replacement in the B5 family. Confirm PoE requirements, stacking compatibility, and software version for seamless integration. Always document current configs before swap.
