Cisco ISR 1100 Series routers

ISR 1100 last order dates at a glance

Cisco's end-of-sale notices for the ISR 1100 range:

Cisco also says the last supported software release for the C1111 models is IOS XE 17.18, and existing support contracts continue to the dates above.

Looking for the C1111-8P or C1117-4P?

• C1111-8P (ISR 1100 8 Ports Dual GE WAN Ethernet Router): no longer orderable. Cisco's replacement is the C1121-8P (ISR 1100 8P Dual GE SFP Router), or the C1121X-8P with 8 GB memory. The 4-port C1111-4P maps to the C1121-4P.
• C1117-4P (ISR 1100 4 Ports DSL Annex A/M and GE WAN Router) and C1117-4PM (Annex M): orderable until 31 Jan 2027. Cisco names the C1127-8PLTEP and C1127-8PMLTEP (8 ports, xDSL, pluggable cellular) as their migration products, and the C1126-8PLTEP for the Annex B/J C1116-4P; all three are on sale.
• C1161-8P: Cisco describes the 116x as giving "the highest performance in the ISR 1000 Series for small branches and remote offices". Orderable until 31 Jan 2027; for new sites we would look at the 8100 Series Secure Routers (our suggestion).

Every orderable model is in the table below with an Add button.

ISR 1100 models and what differs

From Cisco's 1000 Series ISR data sheet (opens in a new tab):

An X in the part number means 8 GB of DRAM and flash for app hosting (4 GB otherwise). LTEP models take a pluggable cellular module, ordered with the router and confirmed at quote; the SIM comes from your mobile network. The C1109 is "Hardened ... for a wider temperature range" for machine-to-machine and IoT sites.

ISR 1100 models and part numbers

Press Add next to a part number to put it in your basket. Where a subscription or support option goes with the hardware, you choose it in the same step and it goes into your basket with the hardware. Part numbers come from the vendor; we confirm each line, quantity and term when we quote.

Licences for ISR 1100 routers

Cisco's data sheet describes two ways to run an ISR 1100:

• Autonomous Cisco IOS XE, with technology packages enabled by licence: IP Base (the default), Application Experience, Unified Communications, and Security (SEC or SEC-NPE), with performance licences on top.
• Controller-managed SD-WAN, licensed with a Cisco DNA subscription: Essentials ("all types of connectivity and router lifecycle management"), Advantage ("advanced WAN topologies, as well as application-aware policies") or Premier.

Cisco's mandatory-attach list pairs the C1121X-8P with a Cisco DNA subscription, and its C1111 notice says that for C1121X-8P replacements "Cisco DNA Subscriptions needs to be purchased additionally". For the other models we confirm the licence with you at quote, depending on whether the router runs SD-WAN. The DNA subscription codes below are by bandwidth tier and term (data sheet (opens in a new tab)).

What you order with it

Subscription and support part numbers for the hardware above. We confirm the right tier, term and quantity at quote.

Cisco DNA subscription (ISR 1100 and first-generation Catalyst 8200/8300)

Managing ISR 1100 routers

• Cisco Catalyst SD-WAN Manager (the data sheet still calls it vManage) for controller-mode SD-WAN, in the cloud or on premises.
• Cisco Catalyst Center (formerly DNA Center) for autonomous IOS XE: device provisioning with templates, inventory and software image management. See Cisco Catalyst Center.
• Cisco Security Cloud Control for the router's firewall features, where a security team runs policy separately.
• The command line, for a single site.

Lifecycle and replacements

Dates are from Cisco's end-of-sale notices EOL15945 and EOL15719. Models with a last order date still to come stay in the table above with Add buttons until then.

Current small-branch alternatives

For a new small branch, Cisco's 8100 Series Secure Routers are the current fanless small-branch range with an integrated next-generation firewall; the C8130-VAI-G2 and C8151-CVAI-G2 variants add DSL. We can compare an ISR 1100 replacement and an 8100 model for your line type and VPNs. Browse every range on Cisco routers.

How to order

How ordering works. Press Add next to a part number and it goes into your basket; where the hardware needs a subscription or takes optional support, you pick it in the same step. Add any modules or accessories, then View basket and Request a quote. We check every line, quantity and term against your sites and come back with a personalised quote by email. Nothing is charged online. We can also design, supply, stage, install and configure ISR 1100 routers and SD-WAN as a project, with the scope confirmed at quote (see network installation).

Not sure which model fits? Contact us with your sites, line types and user numbers, and we will suggest a bill of materials.

Vendor sources

• Cisco 1000 Series ISR data sheet (updated 6 Oct 2026) (opens in a new tab)
• EOL15945 C1112/1113/1116/1117/1131/1161 end-of-sale (opens in a new tab)
• EOL15719 ISR 1111 Series Ethernet Routers end-of-sale (updated 3 Mar 2026) (opens in a new tab)