Cisco3825

The Cisco 3825 Integrated Services Router (ISR) is a legacy networking device that has reached the end of its official lifecycle. It was originally designed for medium-to-large branch offices, offering high-performance integration of data, security, and voice services CiscoCisco.

Product Status & Lifecycle

* End-of-Life (EOL): November 1, 2011.

* End-of-Service Life (EOSL): November 1, 2016.

* Current Standing: The device is no longer sold or supported by Cisco. Organizations still using this hardware typically rely on third-party maintenance (TPM) providers or internal spares RelutechRoctelecom.

Market Trends & Insights

* Declining Value: Equipment that is past its Last Date of Support (LDoS) typically holds less than 10% of its original value. Current retail prices for refurbished units range from $200 to $500, though some basic gateway versions can be found for as low as $38 RoctelecomGoogleGoogle.

* Compliance & Security Risk: In 2026, the device is considered a major security liability in enterprise environments as it no longer receives critical firmware patches or support for modern encryption standards like TLS 1.3 Roctelecom.

* Modern Shift: The market has moved toward AI-ready and SD-WAN architectures. Legacy 1G routers like the 3825 are being phased out in favor of the Cisco ISR 1000 and 4000 Series, which provide better cloud connectivity and visibility RoctelecomCisco.

* Niche Use Cases: Its primary remaining market demand exists for lab environments, CCNA/CCNP certification practice, and as a donor for spare parts in legacy industrial setups Roctelecom.

Core Specifications

* Throughput: Wire-speed performance for T3/E3 rates Cisco.

* Connectivity: 2 built-in 10/100/1000 Mbps ports and 1 SFP port Cisco.

* Voice Capacity: Supports up to 240 IP phone users via Cisco CallManager Express (CME) Cisco.

* Expansion: Features 2 Network Module (NME) slots and 4 High-Speed WAN Interface Card (HWIC) slots Cisco.