Extreme Networks 71G21K2L2-24P2 Gigabit PoE+ Managed Switch

Technical SpecificationsModel：71G21K2L2-24P2 Brand：Extreme Networks (Enterasys legacy) Product Type：1U rackmount Layer2/Layer3 managed PoE switch

Ports:

• 24 ×10/100/1000BASE-T PoE+ RJ45 copper ports, IEEE802.3at PoE+, max 30W per port

• 4 ×100BASE-FX /1000BASE-X SFP gigabit fiber uplink slots

• 1 ×10/100BASE-T out-of-band management port

• 1 ×RJ45 serial console port

Switching capacity：104Gbps Forwarding rate：77.4Mpps MAC address table：32000 entries Jumbo frame：9216 bytes PoE power budget：370W Stacking：Supports stacking within 200 series OS：ExtremeXOS, support local CLI/web management

Power & fan：Built-in single AC power supply,smart variable-speed fan,front-to-back airflow Operating temperature：0℃ ~ +40℃ Storage temperature：-40℃ ~ +70℃ Relative humidity：10%~90%, non-condensing Weight：5.5kg

System compatibility

71G21K2L2-24P2 belongs to ExtremeSwitching 200 enterprise access switch family, inherited from Enterasys product line. Compatible with Extreme validated 100M/1G SFP optical transceivers. It supports stacking with other 200 series switches, managed via local CLI or web GUI. Widely used for branch office, small campus PoE access for Wi-Fi APs, IP surveillance cameras and IP phones spare replacement.

Function

71G21K2L2-24P2 is cost-effective Layer3 gigabit PoE+ access switch. 24 PoE+ copper ports deliver data and power to powered end terminals. Four SFP slots provide gigabit fiber uplink to aggregation switches. It supports static routing,VLAN,STP/RSTP,LACP link aggregation,ACL,QoS and multicast snooping. It monitors port link state,PoE power consumption,system temperature and fan health, and generates hardware fault alarms. Used for enterprise branch wiring closet PoE access networks.

Installation

Mount the switch on standard 19-inch 1U rack. Connect AC power cable. Insert SFP transceivers and fiber patch cords for fiber uplink if needed. Configure stacking when multiple units required. Connect console port for initial configuration. Verify boot,port link and PoE output function before commissioning.

Interface24×PoE+ RJ45 ports,4×SFP gigabit uplink slots,10/100 out-of-band management port,RJ45 serial console,status LEDs,reset button,AC power inlet,ground terminal,rack mounting ears for Extreme Networks 71G21K2L2-24P2.

FeatureOriginal ExtremeSwitching 200 series 1U rackmount gigabit PoE+ Layer3 access switch,24 802.3at PoE+ ports plus four gigabit SFP uplink slots,370W PoE budget,support stacking,smart fan cooling,built-in self-diagnostic function. This spare is suitable for small branch office PoE wired access deployment.

DiagnosticSwitch fails to boot: Check AC power input and power supply health. PoE port no power: Verify PoE budget,PD device classification and port admin status. Copper port link down: Inspect RJ45 cable quality and auto-negotiation settings. SFP port no link: Check SFP transceiver,fiber cable and port configuration. Low optical power alarm: Dirty fiber endfaces or damaged fiber cables. Transceiver undetected: Confirm Extreme compatible SFP module and correct insertion. Over-temperature alarm: Check fan operation and cabinet ventilation,clean dust buildup. Stacking unstable: Verify matched firmware version and stacking cable connection.

Product Brief71G21K2L2-24P2 is ExtremeSwitching 200 series 1U rackmount Layer3 gigabit PoE+ managed switch with 24 PoE+ RJ45 ports and 4 GE SFP uplink slots,classic spare part for enterprise branch 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.