What is the maximum port density supported by the A7503-S?

The A7503-S supports up to 144 Gigabit Ethernet ports across its 3 I/O module slots. Alternatively, you can configure 24 10GbE ports, 12 40GbE ports, or 48 1/10GbE ports in any combination depending on your connectivity requirements and budget constraints.

Does the A7503-S support Power over Ethernet (PoE)?

Yes, the A7503-S supports IEEE 802.3at PoE+ with up to 30W per port. This enables powering high-consumption devices such as access points, IP cameras, and VoIP phones directly from the switch, reducing cabling complexity and infrastructure costs.

How does HP IRF technology work with the A7503-S?

HP Intelligent Resilient Fabric (IRF) technology virtualizes up to four A7503-S chassis into a single logical switch managed through one interface. This simplifies network administration, enables flatter architectures, and provides seamless failover across multiple physical chassis for enhanced reliability.

What redundancy features protect against downtime?

The A7503-S includes redundant load-sharing fabrics, dual hot-swappable power supplies, redundant management modules, and hot-swappable fan assemblies. All components support hitless stateful failovers, ensuring zero-downtime transitions during maintenance or failures, delivering 99.999% availability.

What are the physical dimensions and power requirements?

The A7503-S measures 70.8 x 43.6 x 42.0 cm and weighs 95.71 kg. It requires dual internal power supplies with load-sharing capability and is compatible with HPE 7500 650W AC Power Supply (JD217A) for redundant power configurations.

Does the A7503-S support jumbo frames?

Yes, the A7503-S supports jumbo frames up to 9,216 bytes, enabling high-performance remote backup and disaster-recovery operations. This capability is essential for data center environments requiring efficient transfer of large data blocks without fragmentation.

What management protocols and features are included?

The A7503-S includes LLDP for automated device discovery, dual flash images for configuration backup, multiple configuration file support, and separate data and control paths. It also supports IEEE 802.3ad LACP for link aggregation and provides comprehensive Layer 2/3 routing with IPv4/IPv6 and MPLS support.

JD243B - HP A7503-S Switch Chassis Switch

Name: JD243B - HP A7503-S Switch Chassis Switch
Brand: HP
SKU: JD243B

JD243B - HP A7503-S Switch Chassis Switch | US IT Hardware

Product overview

The HP A7503-S Switch Chassis is a modular multilayer switch designed for enterprise LAN core, aggregation, and edge deployments. This 3-slot, 10U rack-mountable chassis supports up to 144 Gigabit Ethernet ports or flexible combinations including 24 10GbE ports or 12 40GbE ports. The system features dual internal power supplies with load-sharing capability, redundant hot-swappable fabrics and management modules, and passive backplane architecture for high availability. It delivers wire-speed Layer 2 and Layer 3 routing with IPv4 and IPv6 support, IEEE 802.3at PoE+ up to 30W per port, and jumbo frame support up to 9,216 bytes. The A7503-S integrates HP Intelligent Resilient Fabric (IRF) technology for virtualization across multiple chassis with unified management, making it ideal for mission-critical networks requiring scalable, cost-effective 10GbE and 40GbE connectivity.

3 I/O slots supporting up to 144 GbE or 12x 40GbE ports
Redundant fabrics, power supplies, and management for 99.999% uptime
HP IRF virtualization across 4 chassis with single management
IEEE 802.3at PoE+ support up to 30W per port
Wire-speed Layer 2/3 routing with IPv4/IPv6 and MPLS
Jumbo frame support up to 9,216 bytes for high-performance backup

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	JD243B
Brand	HP
Condition	New
Model	A7503-S Switch Chassis
Product Line	HP 7500 Switch Series
Product Type	Modular multilayer chassis switch
EMC Compliance	EN 61000-4-2; EN 61000-4-3; FCC CFR 47 Part 15 Class A; AS/NZS CISPR22 Class A; EMC Directive 2004/108/EC
Link Aggregation	IEEE 802.3ad LACP
Management Features	LLDP for automated device discovery; Dual flash images for backup; Multiple configuration files; Separate data and control paths
Redundancy Features	Redundant/load-sharing fabrics, management, fan assemblies, power supplies; Hitless stateful failovers; All hot-swappable modules; Passive backplane design

Compatible systems

No specific compatibility lists found in sources

Best for

Enterprise LAN Core
Serves as a central switching hub supporting up to 144 Gigabit Ethernet ports with wire-speed Layer 2/3 routing, redundant fabrics, and 99.999% availability for mission-critical network traffic.
Data Center Aggregation
Provides 40GbE and 10GbE connectivity with dual fabric redundancy and load-sharing capabilities, supporting high-density port configurations for aggregating multiple access switches.
Network Edge/Wiring Closet
Enables flexible edge deployments with PoE+ support up to 30W per port, LLDP device discovery, and modular I/O slots for tailored port density and connectivity requirements.
High-Availability Networks
Delivers redundant management, hot-swappable modules, hitless stateful failovers, and passive backplane design ensuring continuous operation for business-critical applications.
Multi-Chassis Virtualization
Supports HP IRF technology to virtualize up to four chassis with single management interface, enabling flatter network architectures and simplified administration across distributed deployments.

Frequently asked questions

Details

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Jumbo Frames	Supports up to 9,216 bytes for high-performance remote backup and disaster-recovery

Power Consumption

Power Supplies	Dual internal power supply; Supports load sharing and redundant hot-swappable power supplies; Compatible with HPE 7500 650W AC Power Supply (JD217A)
Power over Ethernet	IEEE 802.3at PoE+ support up to 30 W per port

Weight	95.71 kg (210.93 lb)
Dimensions	70.8 x 43.6 x 42.0 cm (27.87 x 17.17 x 16.54 in)
Rack Units	10U Height
Form Factor	Rack-mountable chassis switch

Operating Temperature	Not explicitly listed; Standard enterprise switch environmental specs apply
Nonoperating Temperature	Standard storage conditions

Interface/Ports

Fabric Slots	1 Fabric/Main Processing Unit slot
Maximum Ports	Up to 144 Gigabit Ethernet ports or 144 autosensing 10/100/1000 ports or 480 PoE-enabled ports per system
I/O Module Slots	3 I/O module slots; Supports maximum of 144 Gigabit Ethernet ports or 144 autosensing 10/100/1000 ports or 48 1/10GbE ports or 24 10GbE ports or 12 40GbE ports or combination
Port Connectivity	High-density port connectivity; Flexible port selection with 100/1000BASE-X auto speed selection, 10/100/1000BASE-T auto speed detection

HP A7503-S Switch Chassis Switch