HPE R0X26C Aruba 6405 v2 Modular Layer 3 Switch

Overview

The HPE Aruba 6405 v2 (R0X26C) is a modular, chassis-based Layer 3 switch designed for enterprise core and aggregation deployments where port density, PoE scale, and switching headroom all need to grow without a forklift upgrade. With 10 I/O module slots and a switching capacity ceiling of 28 Tbps, this chassis absorbs expansion that would overwhelm fixed-configuration switches — making it the right anchor for large campuses, surveillance-dense facilities, and high-density IoT environments alike. Explore the full HPE networking catalog to see complementary hardware in the Aruba CX line.

Key Features

• 28 Tbps Switching Capacity / 20 Bpps Throughput: At those numbers, the fabric doesn't become the bottleneck even when every slot is populated with high-density 25 or 100GbE line cards. If you've sized a core switch that ran out of headroom in year two, this is the spec to anchor on.
• 10 I/O Module Slots: Slot-based expansion lets you right-size at deployment and scale as the network grows — add copper access, fiber uplinks, or additional PoE capacity without replacing the chassis. That matters in phased campus builds where budget cycles don't align with infrastructure needs.
• Up to 28,880W PoE Budget (802.3af/at/bt): This is the defining spec for surveillance and smart-building deployments. At 90W per 802.3bt port, that budget supports hundreds of cameras, VoIP phones, APs, and access control readers simultaneously — without the per-switch power juggling that plagues fixed-form designs. See how this pairs with an IP camera deployment at scale.
• Up to 480 Smart Rate Ports (1/2.5/5GbE): Smart Rate ports deliver multi-gig speeds over existing Cat5e/Cat6 cabling — a meaningful difference in retrofit buildings where pulling new copper isn't in the budget. Wi-Fi 6/6E APs and high-bitrate cameras benefit immediately without cable replacement.
• Full Ethernet Speed Range — 1/10/25/40/100 GbE: The chassis supports the full commercial Ethernet tier stack, so you can wire access-layer ports at 1GbE today and provision 25 or 100GbE uplinks to the core or server room without a separate aggregation switch.
• Quad-Core ARM Cortex A72 @ 1.8GHz Management Module, 16GB DDR4 ECC: The management plane is not an afterthought here. ECC memory on the management module means single-bit errors don't silently corrupt routing tables — relevant in 24/7 environments like surveillance or manufacturing where an unscheduled reboot means lost footage or production downtime.
• HPE Aruba VSx High Availability: VSx provides active-active chassis virtualization — dual management modules appear as a single logical switch to the network. Failover happens without link flapping, keeping downstream cameras and endpoints online. For environments where the network is the product, not just the infrastructure, this is the architecture to specify.
• SNMP v2c/v3, RMON, CLI Management: Standard enterprise management protocols mean integration with existing NMS platforms (SolarWinds, PRTG, Nagios) is straightforward. SNMPv3 adds authentication and encryption, closing the plaintext polling gap that SNMPv1/v2 leaves open on sensitive network segments.
• 110–240 VAC Dual-Voltage Input: Accepts both North American and international mains voltage, simplifying deployments across multi-site or international campus footprints without separate PSU SKUs.

Integration and Compatibility

The R0X26C operates within the HPE Aruba Networking CX 6400 switch series and is managed via ArubaOS-CX — the same NOS running across the Aruba CX portfolio, so operators already familiar with the platform face no retraining. The switch supports standard enterprise network switch management protocols (SNMPv2c/v3, RMON, CLI), making it compatible with third-party NMS environments. For PoE planning across large camera or IoT deployments, consult a PoE switch selection guide to match port budget to device load. The modular slot architecture supports a wide range of Aruba CX 6400 line cards — verify line card compatibility against the CX 6400 series datasheet before specifying a build.

Frequently Asked Questions

Q: What is the maximum PoE power budget on the R0X26C?

A: The Aruba 6405 v2 supports up to 28,880W of total PoE budget across the chassis, supporting IEEE 802.3af, 802.3at, and 802.3bt standards. This makes it suitable for high-density deployments mixing 90W 802.3bt devices with standard PoE endpoints.

Q: How many I/O module slots does the 6405 v2 chassis provide?

A: The R0X26C chassis provides 10 I/O module slots maximum, allowing flexible population with Aruba CX 6400 series line cards to match port type, speed, and PoE requirements to the deployment.

Q: What high-availability features does the 6405 v2 support?

A: The switch supports HPE Aruba Networking VSx (Virtual Switching Extension), which enables active-active chassis virtualization and redundant management modules for non-disruptive failover.

Q: What Ethernet speeds are supported on the 6405 v2?

A: The chassis supports 1, 10, 25, 40, and 100 GbE depending on the installed line cards, plus Smart Rate multi-gig (1/2.5/5GbE) on supported modules — up to 480 Smart Rate ports maximum.

Q: What management protocols does the R0X26C support?

A: The switch supports SNMP v2c and v3, RMON, and CLI. SNMPv3 includes authentication and encryption for secure polling on sensitive network segments.

Q: What is the switching capacity of the Aruba 6405 v2?

A: Maximum switching capacity is 28 Tbps with forwarding throughput up to 20 billion packets per second (Bpps), providing substantial headroom for full-slot populated chassis builds.

Marty Allison

When customers ask me about the R0X26C, the number I lead with is 28,880W — that total PoE budget across the chassis is the reason this switch earns its place in large-scale surveillance and smart-building infrastructure rather than sitting alongside fixed-configuration alternatives. I've priced out deployments where a PoE shortfall on the aggregation switch forced a second chassis purchase mid-project; specifying the Aruba 6405 v2 from the start avoids that conversation.

Technical Highlights:

• 28 Tbps Switching Capacity: The fabric ceiling is high enough that a fully populated 10-slot chassis with mixed 25GbE and 100GbE line cards won't saturate it — you get genuine non-blocking performance at scale, not a marketing number that only holds at partial load.
• VSx High Availability: Active-active redundancy means the management plane fails over without bringing down forwarding — downstream cameras keep recording, access control readers keep authenticating, and your NOC doesn't get a 2am page about a chassis reboot.
• 16GB DDR4 ECC on Management Module: ECC memory catches and corrects single-bit errors silently. In a 24/7 physical security environment, silent memory corruption causing a routing table anomaly is a worse outcome than a detected fault that triggers an alert — ECC gets you the latter.

Deployment Considerations:

• The chassis weight tops out at 53.5 kg fully loaded — plan for a two-person rack installation and confirm your rack's weight rating before specifying. The 52.88 x 44.26 x 44.85 cm maximum footprint also warrants a pre-installation rack audit on older infrastructure.
• Line card selection is a separate purchasing decision from the chassis — the R0X26C ships as a modular platform, not a ready-to-deploy switch. Confirm line card availability and lead times alongside the chassis order, particularly for specialized Smart Rate or 100GbE uplink modules.

This chassis is the right specification for a large campus core or surveillance aggregation tier where PoE density, HA, and multi-gig access will all be required within a three-to-five year planning horizon — not for a branch location or single-floor deployment where a fixed-configuration switch delivers the same outcome at lower cost and complexity.