Cisco ISR4000 Router (ISR4431/K9)
The Cisco ISR4431/K9 is an enterprise-class ISR 4000 Series router designed for secure, scalable WAN edge deployments in branch and regional offices. Delivering 500Mbps to 1Gbps aggregate throughput with multi-core architecture, it supports up to four 10/100/1000 WAN/LAN ports and a flexible mix of RJ-45 and SFP interfaces to accommodate diverse uplink scenarios across Asia, Europe, Africa, and North America. With three NIM slots, PoE-capable power options, and hot-swappable modules (OIR), it helps distributors, integrators, and end users consolidate routing, services, and power into a single high-availability platform.
ISR4431/K9 specification
| Model | ISR4431/K9 |
|---|---|
| Brand | Cisco |
| Type | Cisco ISR4321/K9 with Security Bundle |
| Aggregate Throughput | 500Mbps to 1Gbps |
| Total Onboard WAN or LAN 10/100/1000 Ports | 4 |
| RJ-45-based Ports | 4 |
| SFP-based ports | 4 |
| Enhanced service-module slots | 0 |
| Doublewide service-module slots | 0 |
| NIM Slots | 3 |
| OIR (all I/O modules) | Yes |
| Onboard ISC slot | 1 |
| Default memory DDR3 ECC DRAM (combined control/services/data planes) | NA |
| Maximum DDR3 ECC DRAM (Combined Control/Services/Data Planes) | NA |
| Default DDR3 ECC DRAM (Data Plane) | 2GB |
| Maximum DDR3 ECC DRAM (Data Plane) | 2GB |
| Default DDR3 ECC DRAM (Control/Services Plane) | 4GB |
| Maximum DDR3 ECC DRAM (Control/Services Plane) | 16GB |