C1121-4P
4 x 10/100/1000BASE-T RJ-45 switched LAN ports
C1121X-8P
8 x 10/100/1000BASE-T RJ-45 switched LAN ports
Cisco router comparison
C1121-4P vs C1121X-8P
C1121-4P provides four switched LAN ports and 4 GB of DRAM and storage. C1121X-8P doubles the switched LAN count to eight, increases memory and storage to 8 GB, and publishes higher IPv4 IMIX and encrypted-throughput results. Select the X model when local port density or performance requires it, then confirm the PoE-capable external power adapter.
2models compared
43specs shown for every model
13differences found
Change comparison
Select different models
At-a-glance comparison
Key performance and configuration differences
Start with the differences that have the greatest effect on capacity, connectivity, software, power and deployment fit.
C1121-4P
6
C1121X-8P
10
C1121-4P
1,372 Mbps
C1121X-8P
1,673 Mbps
C1121-4P
1.426 Gbps
C1121X-8P
1.889 Gbps
C1121-4P
0.338 Gbps
C1121X-8P
0.465 Gbps
C1121-4P
0.37 Gbps
C1121X-8P
0.468 Gbps
Buying decision
How to choose between C1121-4P and C1121X-8P
Review the differences in this order to identify the model that best fits the intended deployment.
-
01
Traffic and deployment role
Size the platform for the branch, aggregation or edge role using the Cisco throughput metric that matches the planned traffic mode.
-
02
Interfaces and expansion
Confirm built-in WAN media and speeds, then check NIM, SM-X or other module support for current and future circuits.
-
03
Software, licensing and power
Verify SD-WAN or routing software, subscriptions, memory, storage and the required power-redundancy design.
Before ordering
Confirm the exact Product ID, license tier, power supplies, accessories and regional requirements.
Free product-selection help
Need help deciding between these Cisco models?
Send your port, performance, license, quantity or deployment requirements. A CCIE-level network engineer will review the shortlist and help identify the better-fit Product ID.
Detailed comparison
Full specification comparison
| Comparison parameter | ||
|---|---|---|
| Product ID | C1121-4P | C1121X-8P |
| Product and ordering | ||
| Product Type | C1121-4P Cisco 1000 Series Integrated Services Router | C1121X-8P Cisco 1000 Series Integrated Services Router |
| Form Factor | C1121-4P Desktop fanless router | C1121X-8P Desktop fanless router |
| Router Role | C1121-4P Small-branch integrated services router | C1121X-8P Small-branch integrated services router |
| Routing and WAN performance | ||
| Configurable Ethernet Ports | C1121-4P 1 x 1G RJ-45 plus 1 x 1G SFP/RJ-45 combo | C1121X-8P 1 x 1G RJ-45 plus 1 x 1G SFP/RJ-45 combo |
| Configurable Ethernet Port Count | C1121-4P 2 | C1121X-8P 2 |
| Integrated LAN Switch PortsDifferent | C1121-4P 4 x 10/100/1000BASE-T RJ-45 switched LAN ports | C1121X-8P 8 x 10/100/1000BASE-T RJ-45 switched LAN ports |
| Integrated LAN Port CountDifferent | C1121-4P 4 | C1121X-8P 8 |
| Built-in 1GE PortsDifferent | C1121-4P 6 | C1121X-8P 10 |
| Built-in 10GE Ports | C1121-4P 0 | C1121X-8P 0 |
| Expansion Slots | C1121-4P No modular slots | C1121X-8P No modular slots |
| NIM Slots | C1121-4P Not applicable | C1121X-8P Not applicable |
| SM-X Slots | C1121-4P Not applicable | C1121X-8P Not applicable |
| Service Module Support | C1121-4P Not applicable | C1121X-8P Not applicable |
| Ports and interfaces | ||
| Management Ports | C1121-4P Management through routed Ethernet; no dedicated management Ethernet port | C1121X-8P Management through routed Ethernet; no dedicated management Ethernet port |
| Console Ports | C1121-4P 1 x Micro-USB console | C1121X-8P 1 x Micro-USB console |
| Performance and scale | ||
| IPv4 IMIX Platform ThroughputDifferent | C1121-4P 1,372 Mbps | C1121X-8P 1,673 Mbps |
| SD-WAN IPsec Throughput (1400-byte)Different | C1121-4P 1.426 Gbps | C1121X-8P 1.889 Gbps |
| SD-WAN IPsec Throughput (IMIX)Different | C1121-4P 0.338 Gbps | C1121X-8P 0.465 Gbps |
| Autonomous IPsec Throughput (1400-byte)Different | C1121-4P 0.37 Gbps | C1121X-8P 0.468 Gbps |
| SD-WAN Overlay Tunnels | C1121-4P 200 | C1121X-8P 200 |
| Configuration, licensing and management | ||
| Routing Protocols | C1121-4P Static routing, BGP, OSPF, EIGRP, IS-IS, RIP and VRF-Lite | C1121X-8P Static routing, BGP, OSPF, EIGRP, IS-IS, RIP and VRF-Lite |
| Management Model | C1121-4P Cisco Catalyst SD-WAN Manager, Cisco Catalyst Center, WebUI, CLI and SNMP | C1121X-8P Cisco Catalyst SD-WAN Manager, Cisco Catalyst Center, WebUI, CLI and SNMP |
| Licensing | C1121-4P Cisco Smart Licensing with Network and security feature tiers | C1121X-8P Cisco Smart Licensing with Network and security feature tiers |
| Required Subscription | C1121-4P Cisco DNA subscription required for SD-WAN; autonomous routing can be licensed separately | C1121X-8P Cisco DNA subscription required for SD-WAN; autonomous routing can be licensed separately |
| USB Ports | C1121-4P 1 x USB 3.0 Type-A host port | C1121X-8P 1 x USB 3.0 Type-A host port |
| Memory and software | ||
| Default DRAMDifferent | C1121-4P 4 GB | C1121X-8P 8 GB |
| Maximum DRAMDifferent | C1121-4P 4 GB | C1121X-8P 8 GB |
| StorageDifferent | C1121-4P 4 GB | C1121X-8P 8 GB |
| Operating System | C1121-4P Cisco IOS XE autonomous or SD-WAN software | C1121X-8P Cisco IOS XE autonomous or SD-WAN software |
| Minimum Software Release | C1121-4P Cisco IOS XE 16.11.1 or later; Cisco IOS XE SD-WAN 17.2.1 or later | C1121X-8P Cisco IOS XE 16.11.1 or later; Cisco IOS XE SD-WAN 17.2.1 or later |
| PoE and power | ||
| Integrated PoE Support | C1121-4P Optional PoE/PoE+ on integrated LAN ports with the required high-power adapter | C1121X-8P Optional PoE/PoE+ on integrated LAN ports with the required high-power adapter |
| Default PoE Budget | C1121-4P 0 W | C1121X-8P 0 W |
| Default Power SupplyDifferent | C1121-4P 66W external AC adapter; 115W adapter for PoE | C1121X-8P 66W external AC adapter; 150W adapter for PoE |
| Power Redundancy | C1121-4P No power-supply redundancy | C1121X-8P No power-supply redundancy |
| Physical and environmental | ||
| Dimensions (H × W × D) | C1121-4P 41.9 × 274.3 × 199.4 mm | C1121X-8P 41.9 × 274.3 × 199.4 mm |
| WeightDifferent | C1121-4P 1.55 kg | C1121X-8P 1.58 kg |
| Operating Temperature | C1121-4P 0 to 40 °C | C1121X-8P 0 to 40 °C |
| Storage Temperature | C1121-4P -40 to 70 °C | C1121X-8P -40 to 70 °C |
| Storage Humidity | C1121-4P 5% to 95% | C1121X-8P 5% to 95% |
| Operating Humidity | C1121-4P 10% to 85% | C1121X-8P 10% to 85% |
| Operating Altitude | C1121-4P 0–3,048 m | C1121X-8P 0–3,048 m |
| MTBFDifferent | C1121-4P 680,590 hours | C1121X-8P Not published by Cisco |
| Warranty | C1121-4P Cisco 1-year limited hardware warranty | C1121X-8P Cisco 1-year limited hardware warranty |
“Not listed” means that no confirmed value is currently available for that model and parameter.
Price, stock & lead time
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