Arista Networks discontinued its DCA-AGNI-100 server appliance, citing supply chain issues.

A company notice called time on the physical security appliance, which sees the server hardware coupled with CloudVision Arista Guardian for Network Identity (AGNI), server software that acts as the network access control (NAC) control plane.

Arista’s customers were advised to upgrade to the DCA-AGNI-200. No new service contracts for the DCA-AGNI-100 will be allowed beyond August 18, 2027; that day will also be the last to request hardware failure analysis for the AGNI-100.

Software bug fixes and support will expire on August 18, 2029; other milestones include end of existing service contract renewals in 2030, and the finish of customer support, returns, and end of life in 2031.

All sales were immediately closed with the announcement on Tuesday (August 18). Arista cited global supply chain constraints and original equipment manufacturer (OEM) component end-of-life (EoL), availability in its decision.

While Arista did not name the affected components, a look under the hood reveals the AGNI-100 is tied to Dell’s PowerEdge R450 server, which uses fourth-generation double data-rate (DDR4) memory and supports 3rd-generation Intel Xeon Scalable processors. Those CPUs were discontinued by Intel in January of this year.

In contrast, the AGNI-200 leverages the Dell R470 generation with Intel Xeon 6 central processing units (CPUs) and DDR5 memory.

Memory bottlenecks in 2026

Dell and the rest of the server industry are hurting from ongoing bottlenecks in memory that have been exacerbated by the AI compute buildout. OEM stalwarts like Cisco and Extreme Networks have passed down costs to customers due to supply-chain and memory-component pressures. Hewlett Packard Enterprise (HPE) recently bucked the trend by guaranteeing price quotes on compute, storage, and infrastructure below the cost of $1 million.

In its most recent earnings, Arista smashed revenue records by surpassing the $3 billion mark for the first time in its history.

CEO Jayshree Ullal commented the vendor was making “solid progress” addressing its “tight” supply chain.

“While the industry-wide supply tightness and rising component costs persist, Arista has taken individual and aggressive proactive steps,” Ullal told investors.

Arista COO Todd Nightingale added the firm had secured multi-year agreements with leading vendors of strategic components, and “qualified new suppliers in key areas to limit risk, and built out supply chains for next-gen AI technologies.”

“Our memory supply has been secured for 2026, and we have extended visibility well into 2027 across DDR4, DDR5, and NAND (non-volatile flash) memory. Importantly, we’ve increased our resiliency through optionality and expanded vendor qualification,” Nightingale added.