HPE Aruba Networking 2540 JL357A 48-Port PoE+ Switch with 4x 1G/10G SFP+
- Managed, Rack-mountable, 48 x 1G PoE+ ports, 4 x 1G/10G SFP+ Uplinks, PoE+ (370W), Layer 2 with static and RIP routing
Overview
The Aruba 2540 Switch Series is HPE's access switch line for mobile and IoT-heavy workplaces, set up with Zero Touch Provisioning, managed with Aruba AirWave or Aruba Central, and secured with Aruba ClearPass. Built on the Aruba ProVision ASIC, the series adds static and RIP routing and four 10GbE uplinks to Layer 2 access. The JL357A is the 48-port PoE+ configuration, putting PoE+ on all 48 access ports for dense phone, camera and access-point closets while backhauling over 10G.
Technical Details
The HPE Aruba Networking 2540 JL357A is the Aruba 2540 48G PoE+ 4SFP+ Switch, a Layer 2+ managed 1U rackmount switch with 48 Gigabit PoE+ ports and four fixed 1G/10G SFP+ uplinks, with static and RIP routing. Switching capacity is 176 Gbps and forwarding rate is 112.0 Mpps. The PoE+ budget is 370 W, from its 80 PLUS Silver certified power supply, with up to 30 W per port and no second power supply listed to raise it. It powers access points, IP phones and IP cameras in high-density campus and branch closets.
Best For
The JL357A suits high-density campus and branch closets that power and connect many IP phones, IP cameras and access points and need 10G fiber or direct-attach backhaul. A 370 W PoE+ budget is shared across the 48 ports and is suitable for mixed deployments of these devices; actual device counts depend on each powered device's power draw.
Not suitable if:
- you need OSPF or BGP routing, since the 2540 lists only static and RIP routing
- you need hardware stacking into one logical switch, since the 2540 lists no stacking feature
- you need full 30 W PoE+ on every port at once, since the 370 W budget is shared across all 48 ports
- you need multigigabit access ports, since the access ports run at 10/100/1000
JL357A Specifications
| Class & Licensing | |
|---|---|
| License Tier | None (no software licensing required) |
| License Detail / MTBF | None (no software licensing required); MTBF not published |
| Ports & Uplinks | |
| PoE Budget | 370 W |
| Port Speed | Gigabit |
| Uplink Configuration | 4x 1G/10G SFP+ (fixed) |
| Performance & Scale | |
| Stacking | No |
| Switching Capacity | 176 Gbps |
| Forwarding Rate | 112.0 Mpps |
| MAC Table | 16,384 entries |
| Hardware & Memory | |
| DRAM | 1 GB DDR3 SDRAM |
| ASIC | Aruba ProVision ASIC |
| Flash | 4 GB eMMC |
| Power & Thermal | |
| Power Input / PSU | 100-127/200-240 VAC, 50/60 Hz; 80 PLUS Silver certified |
| Redundant PSU | No (none listed in QuickSpecs) |
| Cooling | Side-to-side airflow |
| Physical & Environmental | |
| Dimensions (H x W x D) | 1.73 x 17.42 x 11.98 in (4.39 x 44.25 x 30.42 cm) |
| Weight | 9.83 lbs (4.46 kg) |
| Operating Temperature | 32 to 113 °F (0 to 45 °C) up to 5000 ft; 32 to 104 °F (0 to 40 °C) up to 10000 ft |
| Software | |
| Operating System | Not published |
JL357A Accessories
| Accessories | |
|---|---|
| Accessory Kit | 5066-2231 |
| Includes the brackets for mounting the switch in a standard 19-inch telco rack, in an equipment cabinet, and with rubber feet | |
FAQ
Does the HPE Aruba Networking 2540 JL357A support PoE+, and what is the power budget?
Yes. The HPE Aruba Networking 2540 JL357A provides IEEE 802.3at PoE+ on all 48 Gigabit access ports, up to 30 W per port, and also powers IEEE 802.3af and pre-standard PoE devices. Its PoE power is 370 W, and HPE lists no second power supply to raise it. Because 48 ports at 30 W would far exceed 370 W, the number of fully powered devices depends on each device's actual draw.
What transceivers do the JL357A uplinks accept?
The JL357A has four fixed SFP+ ports that run at 1G or 10G, so they accept both 1G SFP and 10G SFP+ transceivers; 25G optics are not supported. HPE listed Aruba 1G SFP SX, LX, LH, RJ45 copper and 100M FX transceivers, and 10G SFP+ SR, LR and ER optics plus 1 m and 3 m direct attach cables. HPE states there is no support for the 10G LRM optic or the 7 m 10G direct attach cable. Transceivers are sold separately.
Does the JL357A support IP routing?
Yes, limited routing. HPE describes the 2540 as a Layer 2 switch series with static and RIP routing. The JL357A supports static IP routing with ECMP and the Routing Information Protocol (RIPv1, RIPv2, and RIPng for IPv6), with up to 256 static and 2,000 RIP routes and a routing table of 2,000 IPv4 and 1,000 IPv6 entries, and it can act as a DHCP server. OSPF and BGP are not listed in the 2540 QuickSpecs, so networks that need them should route those protocols on a separate Layer 3 switch or router.
Can the JL357A be stacked?
No. The JL357A does not stack: the Aruba 2540 QuickSpecs list no stacking feature, so several 2540 switches cannot operate as one logical switch. For bandwidth and resilience between switches HPE lists IEEE 802.3ad LACP with up to 26 static or dynamic trunks of up to eight links each, IEEE 802.1s Multiple Spanning Tree and SmartLink. Several 2540 switches can be managed together from Aruba AirWave or Aruba Central, which is centralized management rather than stacking.
What is the difference between the JL357A and the JL356A?
Both are 2540 PoE+ switches with a 370 W PoE budget, four 1G/10G SFP+ uplinks and static and RIP routing, in an 11.98 in deep chassis. Differences documented by HPE include ports, throughput and weight. The JL357A has 48 Gigabit PoE+ ports, 176 Gbps switching capacity and a 112.0 Mpps forwarding rate and weighs 9.83 lb. The JL356A has 24 Gigabit PoE+ ports, 128 Gbps switching capacity and a 95.2 Mpps forwarding rate and weighs 8.6 lb. Choose the JL357A to connect more low-draw devices per closet.
How is the JL357A managed?
The JL357A is a managed switch. HPE lists a command-line interface, a web browser, a configuration menu, SNMP, Telnet, RMON, Intelligent Management Center and out-of-band management through an RJ-45 or USB micro-B serial console port, plus REST APIs for automating operations, monitoring and troubleshooting. It can be managed on-premises with Aruba AirWave or from the cloud with Aruba Central, and Zero-Touch Provisioning is supported through Aruba Activate or a DHCP-based process with AirWave.
Is the JL357A end of sale?
Yes. HPE's Aruba 2540 end-of-sale notice, announced April 30, 2021, set an End of Sale date of October 31, 2021, or while supplies last, for the JL357A. HPE's support portal record for the same notice lists January 31, 2022 as the End of Sale date and October 31, 2026 as End of Support Life. HPE named the Aruba 6100 48G CL4 4SFP+ (JL675A) as the replacement product.
What condition is the JL357A sold in, and what warranty applies?
The JL357A is sold new and factory-sealed. It is covered by the Network Devices Inc. 1-year warranty and a 30-day return policy.
