Extreme Networks 71G21K2L2-24P Gigabit PoE Managed Switch

Technical SpecificationsModel:71G21K2L2-24P Brand:Extreme Networks Product Type:1U rackmount fixed chassis Layer3 PoE access switch Ports:24 × 10/100/1000BASE-T PoE+ RJ45 ports, dual expansion uplink slots for SFP+/QSFP+ modules PoE standard:IEEE 802.3af / 802.3at PoE+ Switching architecture:7100G high-performance fixed platform Supported features:Layer2/Layer3 switching & routing, ACL, QoS, IPv4/IPv6, multicast, 802.1X authentication OS:EOS (Enterasys Operating System) Operating temperature:0℃ ~ +40℃ Storage temperature:-40℃ ~ +70℃ Relative humidity:10%~90%, non-condensing Weight:4.9 kg

System compatibility71G21K2L2-24P belongs to Extreme Networks 7100G series, formerly Enterasys. It supports optional 10G SFP+ and 40G QSFP+ uplink transceivers. Multiple 7100G switches can be stacked to expand access ports. Widely used for enterprise campus wiring closet PoE access for wireless APs, IP phones and IP cameras.

Function71G21K2L2-24P is a high-density Layer3 gigabit PoE fixed switch. It supplies PoE+ power to powered network terminals. It supports static and dynamic routing, VLAN segmentation, STP/RSTP/MSTP, LACP port aggregation, access control lists, quality of service and multicast traffic control. It monitors port link state, PoE power consumption, system temperature and power supply health, and sends hardware fault alarms. Used for medium and large enterprise campus PoE access networks.

InstallationMount the switch on standard 19-inch 1U rack. Connect AC power cord; redundant power supply optional. Install SFP+/QSFP+ uplink transceivers and fiber cables if high-speed uplink required. Connect Cat5e/Cat6 cables to PoE RJ45 ports. Connect console port for EOS configuration. Verify boot status, port link and PoE operation before commissioning.

Interface24×PoE gigabit RJ45 ports, uplink expansion slots, console port, out-of-band management port, system status LEDs, power inlet, rack mounting ears for Extreme Networks 71G21K2L2-24P.

FeatureOriginal Extreme Networks 7100G series 1U rackmount 24-port gigabit PoE+ Layer3 switch, flexible high-speed uplink expansion, PoE power budget management, hardware health monitoring,EOS operating system,built-in self-diagnostic function. This spare supports legacy enterprise campus wiring closet high-density PoE wired access deployment.

DiagnosticSwitch fails to boot: check AC power input and power module status. PoE port no power: verify PD detection, PoE power budget and port admin status. Copper port link down: inspect Cat5e/Cat6 cable quality and auto-negotiation settings. Uplink module not detected: confirm transceiver compatibility and proper insertion. Over-temperature alarm: check fan operation and rack airflow, remove dust buildup.

Product Brief71G21K2L2-24P is Extreme Networks 7100G series 1U rackmount 24-port gigabit PoE+ Layer3 managed fixed switch with flexible high-speed uplink slots, classic spare part for enterprise wiring closet PoE access network overhaul.

DisclaimerAll parameters are for reference only and shall not be used as the basis for quotation. Goods are scarce, overseas delivery lead time is 3-7 working days. It is only used for equipment maintenance and renovation.