Cisco ISR 1100 C1111-4P Dual GE WAN Router, 4-Port GE LAN
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PRODUCT DESCRIPTION
Cisco ISR 1100 4 Ports Dual GE WAN Ethernet Router (C1111-4P) — Local Warranty
IOS XE branch router
The Cisco C1111-4P is a Cisco 1000 Series Integrated Services Router (ISR 1100) for small branches and remote offices. It runs Cisco IOS XE, operating either as a traditional (autonomous) router or as a Cisco SD-WAN edge device.
Dual Gigabit WAN
Two WAN interfaces are provided: one Gigabit Ethernet copper/SFP combo port and one Gigabit Ethernet copper port, so the router can terminate a fibre and a copper link, or two internet services, for redundancy. A 4-port Gigabit Ethernet LAN switch connects local devices.
Throughput for branch workloads
Cisco rates the C1111-4P at up to 1,600 Mbps IPv4 forwarding and up to 500 Mbps IPsec in autonomous mode, and up to 450 Mbps IPsec (512-byte packets) in SD-WAN mode.
4 GB memory, fanless design
The base model has 4 GB DRAM and 4 GB flash. Cooling is passive with no fan, suiting quiet office or retail spaces. Typical power consumption is 18 W, excluding external supply losses.
Licensed feature sets
IP Base is the default licence, with Application Experience, Unified Communications and Security packages adding features such as zone-based firewall and IPsec VPN.
Cisco ISR 1100 C1111-4P Datasheet — Technical Specifications
Interfaces
| WAN | 2 x Gigabit Ethernet: 1 x copper/SFP combo port + 1 x copper port |
| LAN | 4 x Gigabit Ethernet switch ports |
| Console | RJ-45 and micro-USB console |
| USB | Type A USB 3.0 for external storage |
Performance
| IPv4 forwarding (autonomous) | Up to 1,600 Mbps |
| IPsec (autonomous) | Up to 500 Mbps |
| IPsec (SD-WAN, 512B) | Up to 450 Mbps |
Software & Memory
| Operating system | Cisco IOS XE (autonomous or SD-WAN mode) |
| Minimum release | Cisco IOS XE 16.6.1 |
| DRAM / flash | 4 GB / 4 GB |
| Licences | IP Base (default); APP, UC, SEC technology packages |
Power
| Power supply | External, universal 100-240 VAC 50-60 Hz input, 12 VDC output, 66 W maximum |
| Power consumption | 18 W (excluding external power supply losses) |
Physical & Environmental
| Dimensions (H x W x D) | 1.75 x 12.70 x 9.03 in. |
| Weight | 1.98 kg (4.37 lb) |
| Cooling | Fanless, passive |
| Operating temperature | 0° to 40°C (with altitude de-rating) |
| Operating humidity | 10% to 85% non-condensing |
Compatibility & Software Support
Operating modes
The C1111-4P runs Cisco IOS XE. In autonomous mode it is configured directly by CLI or the IOS XE Web UI; in SD-WAN mode it is managed as a Cisco Catalyst SD-WAN edge through the SD-WAN controllers.
Licensing
IP Base is the default. Application Experience (APP), Unified Communications (UC) and Security (SEC) packages enable additional features such as zone-based firewall and IPsec VPN.
End-of-Sale notice
Cisco has published an end-of-sale and end-of-life announcement for the Cisco ISR 1111 Series Ethernet routers (announced 28 July 2025) that covers the C1111-4P. Milestones: End-of-Sale 28 July 2026; Last Ship Date 27 October 2026; End of SW Maintenance Releases 28 July 2027; End of Vulnerability/Security Support 27 July 2029; Last Date of Support 31 July 2031. Cisco names the C1121-4P (ISR 1100 4P Dual GE SFP Router) as the replacement product.
Warranty
Local Singapore unit with local warranty. For warranty claims, keep your SourceIT invoice as proof of purchase.
Package Contents & Cisco Branch Router Ordering Information
What the Part Number Covers
C1111-4P is the ISR 1100 router with an external power supply (universal AC input, 66 W maximum output). The Cisco datasheet does not publish a full in-the-box list.
Cisco Branch Router Family
| Model | Key difference |
| C1111-4P (this listing) | Dual GE WAN (1 GE/SFP combo + 1 GE), 4-port GE LAN, 4 GB DRAM |
| C1111-8P | ISR 1100 with an 8-port GE LAN switch |
| C1121-4P | Cisco-named replacement: ISR 1100 4P Dual GE SFP Router |
| Cisco 900 Series ISR C921-4P | Classic IOS, 2 x GE WAN, 4-port GE LAN, internal PSU; also end-of-sale |
Datasheet & Downloads
Frequently Asked Questions — Cisco ISR 1100 C1111-4P
What are the two WAN ports?
One Gigabit Ethernet copper/SFP combo port and one Gigabit Ethernet copper port. Either can carry the primary or backup link.
Does the C1111-4P support SD-WAN?
Yes. It runs Cisco IOS XE and can operate in SD-WAN mode, where Cisco rates IPsec throughput at up to 450 Mbps (512-byte packets).
Is the power supply internal?
No. The C1111-4P uses an external power supply (100-240 VAC input, 66 W maximum output).
Is the C1111-4P end-of-sale?
Yes. Cisco's end-of-sale date was 28 July 2026 and the last ship date is 27 October 2026. Security fixes continue until 27 July 2029 and support ends 31 July 2031. Cisco names the C1121-4P as the replacement.
Is it fanless?
Yes. Cisco specifies a fanless design with passive cooling.
