Cisco 800 Series Routers EOL: End-of-Life and Support Information

The Cisco 800 Series Integrated Services Routers (ISRs) have served as the standard fixed-configuration edge device for small offices, teleworkers, and enterprise branch locations for over a decade. Cisco has systematically phased out the majority of this family, transitioning customers to newer SD-WAN-capable platforms.

Because the 800 Series encompasses dozens of individual models (including the 810, 860, 880, and 890 sub-series), there is no single universal End-of-Life (EOL) date. Support timelines depend entirely on the specific part number (SKU).

Is the Cisco 800 Series Discontinued?

Yes, the vast majority of traditional Cisco 800 Series ISRs are discontinued and have passed their End-of-Sale (EOS) dates. Many of the most popular models, such as the classic CISCO881-K9 and earlier 890 models, have also passed their Last Date of Support (LDoS).

(Note: The legacy 800 Series ISRs discussed here are completely distinct from the modern Cisco Catalyst 8000 Edge Platforms, which is Cisco’s current-generation flagship enterprise routing family.)

EOL Status

The following table outlines the general lifecycle phases for the primary sub-series. Because dates vary by exact SKU, you must verify your specific part number against Cisco’s official EOS notices.

Series / Representative Models	End of Sale (EOS) Target Period	Last Date of Support (LDOS) Target Period	Support Status
Cisco 850 / 870 Series	2011 – 2012	2016 – 2017	End of Support
Cisco 860 / 880 Series (e.g., CISCO881-K9)	2016 – 2019	2021 – 2024	End of Support
Cisco 890 Series (Original) (e.g., CISCO891-K9, 892)	2017 – 2019	2022 – 2024	End of Support
Cisco 890F / Advanced Models (e.g., C891F-K9)	2021 – 2022	2026 – 2027	Mixed (Approaching LDoS)

Key Specifications

Despite their age, Cisco 800 Series routers share a consistent baseline architecture designed for branch connectivity.

Feature	Specification Details (Varies by Model)
Architecture	Fixed configuration, fanless (most models)
WAN Interfaces	Fast Ethernet, Gigabit Ethernet, VDSL/ADSL, SHDSL, or Cellular (LTE/3G)
LAN Interfaces	4-port or 8-port managed switch (Fast Ethernet or Gigabit Ethernet)
Operating System	Cisco IOS Software (Universal Image)
Security Features	Hardware-accelerated IPsec VPN, Zone-Based Firewall, IPS
Power over Ethernet	Optional PoE support on specific models (requires upgraded power supply)
Form Factor	Desktop, with optional 1RU rack-mount kits available

What Do the Lifecycle Dates Mean?

When auditing your network infrastructure, it is critical to distinguish between the different phases of Cisco’s EOL process:

End-of-Sale (EOS): The last date you could purchase the router directly from Cisco or authorized partners.
End of Software Maintenance: The date Cisco stops issuing new IOS feature updates and non-critical bug fixes.
End of Vulnerability/Security Support: The date Cisco stops releasing patches for critical security vulnerabilities. For edge routing devices exposed to the WAN, this is the most critical deadline.
Last Date of Support (LDoS): The final date to receive hardware replacement (RMA) or technical support via a Cisco SMARTnet contract. After this date, the product is entirely obsolete from a vendor-support perspective.

Recommended Replacement: Cisco ISR 1000 Series

The official migration path for the Cisco 800 Series is the Cisco 1000 Series Integrated Services Routers (ISR 1100 models).

The ISR 1000 series (such as the C1111-4P or C1111-8P) directly replaces the 800 series form factor while upgrading performance, memory, and software capabilities.

Cisco 800 Series vs ISR 1000 Replacement

Feature	Legacy Cisco 800 Series	Cisco ISR 1000 Series
Operating System	Classic Cisco IOS	Cisco IOS XE
SD-WAN Capability	Limited to none	Full Cisco SD-WAN (Viptela) support
Performance (IPsec VPN)	Typically < 50 Mbps	Up to 350+ Mbps
Throughput Architecture	Single-core routing	Multi-core processing architecture
Wireless Support	802.11n / early 802.11ac	802.11ac Wave 2 / Wi-Fi 6 (on newer models)
Cellular WAN	3G / early 4G LTE	4G LTE Advanced and 5G

For modern production environments requiring high bandwidth, SD-WAN integration, or active security patching, migrating to the ISR 1000 series is highly recommended.

Can You Still Use a Cisco 800 Series Router?

Yes, from a physical hardware standpoint, a Cisco 800 Series router does not stop functioning after its EOL or LDoS date. The routing engine, switch ports, and IOS software will continue to process traffic exactly as configured.

However, operating these devices in a production environment carries risks:

No Security Patches: Unpatched vulnerabilities in older IOS versions can be exploited if the router is exposed to the public internet.
Hardware Failure: Without an active service contract, a failed power supply or motherboard cannot be RMA’d through Cisco.
Throughput Bottlenecks: Most traditional 800 series routers (especially 880 and non-F 890 models) lack the CPU power to handle modern gigabit WAN connections, particularly when IPsec VPNs or NAT are enabled.

Buying or Selling Used Cisco 800 Series Equipment

Because millions of these units were deployed globally, the secondary market is flooded with used Cisco 800 Series routers.

When it makes sense to buy used:

Homelabs and CCNA/CCNP Study: Models like the 891F run mature IOS versions and are excellent, low-cost physical hardware for learning routing protocols, NAT, and VPN configurations.
Out-of-Band Management: They can serve as cheap, reliable terminal servers or out-of-band management gateways for isolated racks.
Cold Spares: If you still run 800 series routers in production, buying inexpensive used units to keep on the shelf is a practical alternative to expired SMARTnet contracts.

What to check before buying:

Power Supplies: Many 800 series units require specific external power bricks. Ensure the seller includes the original Cisco power supply. If the router supports PoE, ensure it includes the upgraded power brick required to drive the PoE ports.
Licenses: Advanced features (like advanced IPsec or certain routing protocols) may require specific IOS feature sets or licensing. Verify what is active on the device.
Rack Mounts: These are desktop units. If you intend to rack-mount it, check if the “ears” (rack mount brackets) are included, as sourcing them separately can be frustrating.

Frequently Asked Questions

What replaced the Cisco 800 Series?

Cisco introduced the ISR 1000 Series (specifically the C1100 models, such as the C1111-4P and C1111-8P) as the direct replacement for the 800 Series. The 1000 series offers multi-core processors, IOS XE, and full SD-WAN support.

Is the Cisco Catalyst 8000 the same as the 800 Series?

No. The legacy 800 Series is a family of small branch routers that run classic IOS. The Catalyst 8000 Edge Platforms Family is Cisco’s modern, high-performance edge networking portfolio built for SD-WAN and SASE.

Can I still get IOS updates for my Cisco 881 or 891?

If the specific router model has passed its Last Date of Support (LDoS), Cisco no longer provides IOS updates, including security patches, regardless of your licensing or contract status.

Are Cisco 800 Series routers good for a CCNA lab?

Yes. Due to their very low cost on the used market and ability to run comprehensive IOS feature sets, routers like the Cisco 881, 891, and 892 are popular choices for hands-on networking practice, though they do not support the newer IOS XE commands found on modern platforms.

Sources used for factual verification

Cisco Official Documentation: Cisco 800 Series Integrated Services Routers End-of-Life and End-of-Sale Notices.
Cisco Official Documentation: Cisco 1000 Series Integrated Services Routers Data Sheet (verified as replacement path).
Internal Hardware Specifications Database: Cisco 880 and 890 series hardware specifications, IOS compatibility, and performance characteristics.

Fact-check warnings

SKU Variance: The Cisco 800 series ran for nearly two decades across dozens of specific part numbers. The EOS and LDOS dates provided are representative ranges for the major sub-series blocks. Users must always verify their exact alphanumeric SKU (e.g., C891F-K9 vs CISCO891-K9) against Cisco’s active product lifecycles, as dates for specific SKUs can vary by several years.
Performance limits: VPN throughput statements are generalized; actual throughput heavily depends on the specific encryption algorithm, packet size, and IOS version deployed.

Cisco 800 Series Routers EOL: Support Dates & Replacement Options