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Vendor lineage

HPE Networking - HP, 3Com, Aruba, Juniper

The great consolidation: from the Addison Avenue garage to the $14B Juniper merger.

Four founding stories converged into one company: Hewlett-Packard (1939), 3Com and the commercialization of Ethernet (1979), Juniper Networks and purpose-built routing silicon (1996), and Aruba Networks and the mobile-first enterprise (2002). HP acquired 3Com in 2010 and Aruba in 2015, split into HP Inc and HPE that same year, and closed the acquisition of Juniper Networks on July 2, 2025 - assembling the industry's broadest challenge to Cisco.

Founding stories

1939

Hewlett-Packard

Palo Alto, California · Founders: Bill Hewlett, Dave Packard

Two Stanford classmates started in a one-car garage at 367 Addison Avenue - now a California landmark known as the birthplace of Silicon Valley. Their first product was the HP 200A audio oscillator; one of the first customers was Walt Disney Studios, which used HP oscillators to test theater sound for Fantasia. The name order, Hewlett-Packard, was decided by a coin flip.

1979

3Com

Santa Clara, California · Founders: Robert Metcalfe (with co-founders)

Robert Metcalfe co-invented Ethernet at Xerox PARC in 1973, then founded 3Com (Computer Communication Compatibility) to commercialize it. 3Com's adapters put networking into ordinary PCs and helped make Ethernet the world's default LAN. Metcalfe received the ACM Turing Award in 2022 for Ethernet.

1996

Juniper Networks

Silicon Valley, California · Founders: Pradeep Sindhu

A Xerox PARC computer scientist, Sindhu founded Juniper in February 1996 on the conviction that Internet-scale routing needed purpose-built silicon rather than general-purpose CPUs. The clean-sheet M40 core router and the Junos operating system shipped in 1998, roughly ten times faster than incumbent gear, with control and forwarding planes separated - an architecture the industry later treated as standard.

2002

Aruba Networks

Sunnyvale, California · Founders: Keerti Melkote, Pankaj Manglik

Aruba was built for the mobile-first enterprise: Wi-Fi as the primary access layer rather than an afterthought, wrapped in identity-based access control that later became ClearPass. It grew into one of the defining enterprise-wireless companies of its era.

The timeline

  1. DOJ suit, settlement, and close

    The DOJ sues on January 30, 2025; a June 28 settlement requires divesting HPE's Instant On business and licensing Juniper's Mist AIOps source code; the merger closes July 2, 2025 for approximately $13.4B in cash. Juniper becomes the heart of HPE Networking.

    HPE 10-K FY2025; HPE/Juniper 8-K, Jun 28, 2025.

  2. HPE announces the Juniper acquisition (~$14B)

    January 9, 2024: an all-cash agreement at $40.00 per share, approximately $14B in equity value.

  3. Juniper acquires Mist Systems

    Closed April 1, 2019: AI-driven, cloud-managed Wi-Fi and the Marvis virtual network assistant - the technology that reframed Juniper's enterprise story.

    Announced at $405M; Juniper's 10-Q records $359.2M total consideration.

  4. HP acquires Aruba, then splits into HP Inc and HPE

    Aruba is announced March 2, 2015 at $24.67 per share (~$3.0B equity, ~$2.7B net of cash) and completes May 19. On November 1, HP separates into HP Inc and Hewlett Packard Enterprise; Aruba anchors HPE's Intelligent Edge.

    Aruba SEC 8-K, Mar 2, 2015.

  5. HP announces the 3Com acquisition ($2.7B)

    Announced November 11, 2009 and closed in April 2010, bringing 3Com's switching (and H3C in China) into HP's networking business.

    HP press release, Nov 11, 2009.

  6. Juniper acquires NetScreen (~$4B)

    Announced February 9, 2004: a stock-for-stock merger (1.404 Juniper shares per NetScreen share, ~$4B) that takes Juniper into security - the lineage behind the SRX firewall line.

    NetScreen SEC Form 425, Feb 9, 2004; value based on Juniper's $29.47 close.

  7. Aruba Networks founded

    Keerti Melkote and Pankaj Manglik start Aruba in Sunnyvale for the mobile-first enterprise.

  8. Juniper IPO

    On June 25, 1999 the stock jumps from $34 to $99 on day one - one of the defining IPOs of the era. By 2000 Juniper holds roughly 30% of the high-end core-router market.

  9. Juniper ships the M40 and Junos

    The clean-sheet core router arrives roughly 10x faster than incumbents, with separated control and forwarding planes.

  10. Juniper Networks founded

    Pradeep Sindhu starts Juniper in February 1996 to build IP routers on purpose-built silicon.

  11. 3Com founded to commercialize Ethernet

    Metcalfe's startup turns a lab technology into the default local-area network of the PC age.

  12. Ethernet invented at Xerox PARC

    Robert Metcalfe co-invents Ethernet, the technology 3Com will later carry into every office.

  13. HP founded in the Addison Avenue garage

    Bill Hewlett and Dave Packard start Hewlett-Packard in Palo Alto; the HP 200A audio oscillator is the first product.

Flagship products and solutions

  • Junos OSOne operating system across Juniper routing, switching, and security since 1998.
  • MX / PTX routingService-provider edge and core routing - the M-series lineage that built the modern Internet backbone.
  • EX / QFX switchingEnterprise campus and data-center switching on Junos.
  • SRX securityThe firewall line carrying NetScreen's DNA into the Junos era.
  • Mist AI and MarvisCloud-managed, AI-driven wired and wireless operations with a conversational network assistant.
  • Aruba Wi-Fi, CX switching, and ClearPassEnterprise wireless, campus switching, and identity-based network access control.
  • HPE Aruba Networking CentralThe cloud management plane for HPE's edge portfolio.

Key innovations

  • Ethernet for everyone3Com turned Metcalfe's PARC invention into commodity adapters, making Ethernet the world's LAN.
  • Purpose-built routing siliconJuniper's M40 proved that separating control and forwarding planes on custom ASICs could beat general-purpose designs by an order of magnitude.
  • Identity-based access controlAruba's ClearPass made who you are, not which port you plug into, the basis of network access.
  • AI-native network operationsMist's cloud microservices and the Marvis assistant moved network troubleshooting from CLI archaeology toward self-driving operations.

Main markets

The combined company spans enterprise campus and branch, data center and cloud, service-provider routing, and the new AI data-center buildout. Aruba grew from roughly $729M in sales at acquisition to $5.2B in HPE's fiscal 2023; Juniper adds the service-provider and AI-networking side HPE never had.

The DOJ's own 2025 complaint underlined the stakes: it argued the merged HPE-Juniper and Cisco would together hold more than 70% of the US networking-equipment market - a measure of how consolidated enterprise networking has become.

Analyst standing

  • Gartner named Juniper a Leader in the 2025 Magic Quadrant for Enterprise Wired and Wireless LAN Infrastructure.
  • Aruba (as HPE) and Juniper each spent years as fixtures of that same Magic Quadrant's Leaders quadrant before the merger united their portfolios.
→Rodolfo's own NetScreen and Juniper years (career page)
Sources