🔷 3Com SuperStack 3 3870 Switch 48 Ports Gigabit Ethernet Managed 🔷


Price:
Sale price€40.00

Description

🔷 3Com SuperStack 3 Switch 3870 48 Professional Administrable Gigabit Ethernet Ports 🔷

📋 Product Description

Discover the 3Com SuperStack 3 Switch 3870, a high-performance professional network switch equipped with 48 10/100/1000 Gigabit Ethernet ports. This Layer 2 administrable switch offers a scalable and reliable connectivity solution for enterprise networks, data centers, and demanding network infrastructures.

Thanks to its wirespeed switching technology and stacking capacity of up to 8 units via a 40 Gbps stacking architecture, this switch allows for impressive scalability of up to 384 ports in total. It also integrates 4 dual-purpose ports supporting copper connections or SFP adapters for maximum flexibility with fiber optic links.

⚠️ Important information: Photos are provided for illustration purposes only. Only the content of the listing is authoritative for the exact product reference and included accessories. If in doubt, please contact us before your purchase.
⚙️ Technical Specifications
Model 3Com SuperStack 3 Switch 3870 (Reference: 3CR17451-91)
Number of ports 48 10/100/1000 Gigabit Ethernet RJ-45 ports
Special ports 4 dual-purpose ports (copper or SFP for fiber optic)
Switch type Administrable Layer 2 (capable Layer 3)
Performance Wirespeed Gigabit on all ports
Stacking capacity Up to 8 units (384 ports) via 40 Gbps stacking
Stacking ports 2 integrated full duplex 10 Gbps ports
VLAN Supports IEEE 802.1Q, up to 255 VLANs
Spanning Tree STP, RSTP (IEEE 802.1w), MSTP
Link aggregation LACP (IEEE 802.3ad) supported
QoS / Priority IEEE 802.1p, DSCP, TCP/UDP
Safety IEEE 802.1X, MAC port security, RADIUS, ACL
Multicast IGMP snooping v1/v2, 255 multicast groups
Routing RIP v1/v2, static routing
Management Web Interface (HTTP/HTTPS), CLI (serial/Telnet/SSH), SNMP v1/v2/v3
Flow control Flow control supported
Jumbo frames Supported
RMON 4 groups (Statistics, History, Alarms, Event)
Approximate weight 5.5 kg (device only)
Manufacturer 3Com (USA / China)
✨ Features and Specifications
  • High-speed switching: Wirespeed performance on all 48 Gigabit ports for optimal throughput without bottlenecks
  • Exceptional scalability: 40 Gbps stacking architecture allowing up to 8 switches to be stacked for a total of 384 ports
  • Connection flexibility: 4 combo ports supporting copper connections or SFP modules for fiber optic integration
  • Advanced network security: 802.1X authentication, MAC port access control, RADIUS support, and access control lists (ACL)
  • Comprehensive network management: VLAN support (802.1Q), Spanning Tree (STP/RSTP/MSTP), LACP link aggregation
  • Quality of service: Traffic prioritization 802.1p, DSCP, and by TCP/UDP port for critical applications
  • Multicast optimization: IGMP snooping for efficient multicast traffic distribution
  • Routing capabilities: Support for RIP v1/v2 and static routing for network segmentation
  • Flexible management: Intuitive Web interface, command line (CLI), SNMP v1/v2/v3 for integration into monitoring systems
  • Broadcast control: Protection against broadcast storms for optimal network stability
  • Port mirroring: Roving analysis function for network traffic diagnosis and analysis
  • Bandwidth limitation: Rate limiting with a resolution of 1 Mbps per port
📦 Condition and Content
Condition: Professional used product, fully tested and verified in perfect working order.

Included in this sale:

  • 1x Tested and functional 3Com SuperStack 3 3870 switch with 48 ports
  • 1x Power supply cable
  • 2x Rack mounting brackets

✓ All our refurbished equipment is carefully tested by our qualified technicians to ensure proper functioning. This switch has been checked on all its ports and main features.

🎯 Customer Benefits
  • 30-day professional warranty: Complete protection against any malfunction
  • Secure and fast shipping: Package carefully packed with carrier tracking number
  • Professional invoice: Invoice with 0% VAT in paper format included with each package
  • Authentic equipment: Original 3Com equipment, no counterfeits
  • Commercial support: Our team is available to answer your questions before purchase
🛡️ 30-DAY WARRANTY - TRACKED AND SECURE SHIPPING 🛡️
⚠️ Important Information

Software disclaimer:

This switch is sold with its original operating system pre-installed. We do not provide any technical support regarding the configuration, programming, or software troubleshooting of this equipment. The buyer must have the necessary technical skills to configure and manage this type of professional network hardware.

The switch comes with its factory configuration or a basic configuration. Official technical documentation and administration guides are available on specialized sites and technical forums.

❓ Frequently Asked Questions (FAQ)
Q1: Is this Gigabit Ethernet switch compatible with my existing network?
Yes, the 3Com SuperStack 3870 is fully compatible with all standard network equipment. Its 48 10/100/1000 ports automatically adapt to the speed of your devices (10 Mbps, 100 Mbps, or 1000 Mbps). It complies with IEEE standards and works with all Cat5e or Cat6 Ethernet cables. This manageable switch can be integrated into any enterprise network infrastructure, data center, or professional environment.
Q2: Can I stack multiple 3Com 3870 switches together?
Absolutely! The SuperStack 3 Switch 3870 has built-in stacking ports allowing you to stack up to 8 units via a high-speed architecture of 40 Gbps. This stacking feature allows you to manage up to 384 ports as a single switch with a unique IP address. The stacked switches share configuration, VLANs, and can be centrally managed, significantly simplifying the management of your Gigabit network infrastructure.
Q3: What management options are available for this manageable switch?
This manageable switch offers several professional management methods: Web interface via HTTP/HTTPS for intuitive graphical management, command line (CLI) accessible via serial port, Telnet, or SSH for experienced administrators, and SNMP v1/v2/v3 protocol for integration into your network monitoring tools. You can configure VLANs, QoS, 802.1X security, Spanning Tree, LACP link aggregation, and all advanced Layer 2 features.
Q4: Does the switch support VLANs and network separation?
Yes, the 3Com 3870 fully supports VLANs according to the IEEE 802.1Q standard with the ability to create up to 255 distinct VLANs. This feature allows you to segment your network into separate broadcast domains, enhance security by isolating traffic between departments, and optimize network performance. The switch also manages VLAN tagging, trunk and access ports, as well as automatic VLAN assignment to simplify deployment.
Q5: What network security features are included?
The SuperStack 3870 incorporates numerous professional security features: IEEE 802.1X network authentication to control network access, MAC address security at the port level, RADIUS protocol support for centralized authentication, configurable access control lists (ACLs), and RADA (RADIUS Authenticated Device Access) functionality. The switch also includes protection against broadcast storms, secure management via HTTPS and SSH, and SNMP v3 support with encryption for secure administration of your manageable network infrastructure.
Q6: Can fiber optic SFP modules be used with this switch?
Yes, the 3Com 3870 has 4 dual-purpose combo ports that accept either standard RJ-45 copper connections or SFP (Small Form-factor Pluggable) modules for fiber optic links. These ports offer great flexibility for connecting the switch to remote equipment via fiber, creating high-speed backbone links, or integrating the switch into an existing mixed copper/fiber network infrastructure. Ideal for extending your Gigabit network over long distances.
Q7: Is the switch suitable for VoIP and real-time applications?
Perfectly! This professional switch incorporates advanced Quality of Service (QoS) mechanisms essential for VoIP and latency-sensitive applications. It supports IEEE 802.1p traffic prioritization on 4 queues, DSCP (DiffServ) classification, and TCP/UDP port prioritization. The switch also includes specific support for NBX systems. These features ensure that your voice, video, and critical data traffic always receive the necessary bandwidth and priority, even during network congestion.

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