Ernitec ELECTRA-M248-1GB-900W sieťový switch Managed L3 Gigabit Ethernet (10/100/1000) Power over Ethernet (PoE) čierny

ERNITEC ELECTRA-M248-1GB-900W is a managed Layer 3 switch with 48 Gigabit RJ-45 ports (10/100/1000), six SFP and six SFP+ slots, and a 900 W PoE power budget. The switch provides a MAC address table of 32,000 entries, a switching capacity of 216 Gbit/s and an RJ-45 console port. It is designed for rack mounting and intended for enterprise access, aggregation and PoE-powered devices such as IP phones, surveillance cameras and wireless access points.

Advantages

The switch supports IPv4 and IPv6 routing features (RIP v1/v2, OSPF v2) and offers Layer 3 management capabilities alongside DHCP server support, QoS and ACL control. It implements a wide set of standards for reliability and interoperability, including STP/RSTP/MSTP for loop prevention, IGMP snooping for multicast optimization, and extensive VLAN and security binding options. A 900 W PoE budget with IEEE 802.3af/at compatibility enables powering multiple devices and includes PoE watchdog, per-port power configuration and scheduled PoE control.

Suitable for

• Rack-mounted enterprise access or aggregation switches in campus and branch networks
• Deployments that require Power over Ethernet for IP phones, PoE cameras and wireless APs
• Networks needing Layer 3 features such as OSPF, RIP and advanced VLAN segmentation

When it may not be suitable

This switch is intended for professional network environments and may be oversized for small home offices or single-room deployments where fewer ports and lower PoE power are sufficient. If an environment requires carrier-grade features beyond included protocols or modular hot-swappable components, consider a different product line tailored to those needs.

Key specifications

• Ports: 48 x Gigabit RJ-45 (10/100/1000), 6 x SFP, 6 x SFP+
• PoE budget: 900 W; compliant with IEEE 802.3af (15.4 W) and IEEE 802.3at (30 W) per port
• Switching capacity: 216 Gbit/s
• MAC address table size: 32,000 entries
• Layer 3 features: DHCP Server, RIP v1/v2, OSPF v2, IPv4/IPv6 support
• Management: WEB, TELNET, CLI, SSH, SNMP v1/v2/v3, RMON
• VLANs: multiple VLAN partitions including MAC VLAN and protocol VLAN; IP+MAC+VLAN+port binding
• Resiliency and multicast: STP/RSTP/MSTP (ERPS), IGMP Snooping v1/v2, loop detection and self-healing
• Additional features: QoS, ACL control, DHCP snooping, IP source and DAI protection, PoE watchdog and time management
• Form factor: Rack mounting; console port: RJ-45

How to use

Install the switch in a standard 19-inch rack using the supplied mounting brackets. Connect uplink interfaces using SFP/SFP+ modules as required and attach endpoints to the Gigabit RJ-45 ports. Configure basic network settings and VLANs via the web interface, CLI, or SNMP. Enable PoE per port and set power schedules or watchdog parameters if powering cameras, phones or access points. Use routing protocols such as OSPF or RIP where inter-VLAN routing or dynamic routing is required, and apply ACLs and DHCP snooping to enforce security policies.

What to consider before purchase

• Ensure rack space and power capacity to support the 900 W PoE budget and the physical rackmount dimensions
• Verify required SFP/SFP+ module types and uplink speeds for your fiber or copper connections
• Confirm that Layer 3 features (OSPF, RIP) and management interfaces (SSH, SNMPv3) meet your network management and security policies
• Evaluate the number of PoE devices to confirm the 900 W budget is sufficient for simultaneous operation

Recommendations

For stable operation in enterprise deployments, plan VLAN and IP address design before installation, reserve adequate PoE headroom for peak device usage, and use SSH/SNMPv3 for secure management. Regularly update device firmware and monitor port and power usage to prevent overloads.