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ISR4321/K9 Routers Overview
The Cisco ISR4321/K9 Integrated Services Router is designed to deliver advanced services for small enterprise branch environments. It offers 50 Mbps throughput by default, with the flexibility to scale up to 100 Mbps using the pay-as-you-grow model and purchasing the FL-4320-PERF-K9 licenses. This router includes 2 onboard WAN or LAN 10/100/1000 ports, with 2 RJ-45-based ports and 1 SFP-based port, providing versatile connectivity options. The ISR4321-K9 also features 2 NIM (Network Interface Modules) slots and 1 onboard ISC slot for expansion. With 4 GB of RAM (expandable to 8 GB) and 4 GB flash memory (expandable to 8 GB), this router offers ample memory for handling demanding applications. Additionally, the router supports external AC and PoE power supply options and is rack-mountable with a 1RU form factor. Shop Cisco Routers like the ISR4321-K9 for a reliable solution in Cisco Enterprise Branch Routers, featuring service module support, network interface module support, ISC slots, and SFP-based connectivity in a rack-mountable design.
Recommended modules and accessories
Items |
Models |
Description |
License |
L-SL-4320-APP-K9 |
Cisco AppX license L-SL-4320-APP-K9= with 200 conns/ISRWAAS or 750 conns/vWAAS |
Console and Auxillary Cables |
CAB-CONSOLE-RJ45 | Cisco CAB-CONSOLE-RJ45 Console Cable 6ft with RJ45 and DB9F |
| CAB-CONSOLE-USB | Cisco CAB-CONSOLE-USB Console Cable 6 ft with USB Type A and mini-B | |
Network Interface Modules |
NIM-2CE1T1-PRI | Cisco Multiflex Trunk Voice and WAN network interface module |
| NIM-1MFT-T1/E1 |
Cisco Fourth-Generation Multiflex Trunk Voice and WAN network interface module |
|
| NIM-4E/M | Analog voice network interface card (ear and mouth) | |
| NIM-2FXS | Cisco Analog voice network interface card NIM-2FXS | |
| NIM-2FXS/4FXO | Cisco Analog voice network interface card NIM-2FXS/4FXO | |
SFPs for On-Board GE Ports |
GLC-LH-SMD |
Cisco GLC-LH-SMD 1000BASE-LX/LH SFP transceiver module, MMF/SMF, 1310nm, DOM |
| GLC-ZX-SMD |
Cisco GLC-ZX-SMD 1000BASE-ZX SFP transceiver module, SMF, 1550nm, DOM |
|
| GLC-SX-MMD |
Cisco GLC-SX-MMD 1000BASE-SX SFP transceiver module, MMF, 850nm, DOM |
Compare to Similar Items
Technical Specifications |
ISR4461/K9 | ISR4451-X/K9 | ISR4431/K9 | ISR4351/K9 | ISR4331/K9 | ISR4321/K9 | ISR4221/K9 |
| Aggregate Throughput | 1.5Gbps | 1 Gbps to2 Gbps | 500 Mbps to1 Gbps | 200 Mbps to400 Mbps | 100 Mbps to300 Mbps | 50 Mbps to100 Mbps | 35 Mbps to 75 Mbps |
|
Total onboard WAN or LAN 10/100/1000 ports |
4 | 4 | 4 | 3 | 3 | 2 | 2 |
| RJ-45-based ports | 4 | 4 | 4 | 3 | 2 | 2 | 2 |
| SFP-based ports | 4 | 4 | 4 | 3 | 2 | 1 | 1 |
| Enhanced service-module slots | 3 | 2 | 0 | 2 | 1 | 0 | 0 |
| Doublewide service-module slots | 2 |
1 (assumes no singlewide SM-X modules installed) |
0 |
1 (assumes no singlewide SM-X modules installed) |
0 | 0 | 0 |
| NIM slots | 3 | 3 | 3 | 3 | 2 | 2 | 2 |
| OIR (all I/O modules) | Yes | Yes | Yes | Yes | Yes | Yes | No |
| Onboard ISC slot | 1 | 1 | 1 | 1 | 1 | 1 | No |
Specifications
ISR4321/K9 Specifications |
|
| Aggregate Throughput (Default) | 50 Mbps |
|
Aggregate Throughput (Performance License) |
100 Mbps |
|
Aggregate CEF Only Throughput (Boost License) |
1.5Gbps |
|
Total onboard WAN or LAN 10/100/1000 ports |
2 |
|
Total onboard WAN or LAN 10Gbps ports |
- |
| RJ-45-based ports | 2 |
| SFP-based ports | 1 |
| Enhanced service-module slots | 0 |
| Doublewide service-module slots | 0 |
| NIM slots | 2 |
| OIR (all I/O modules) | Yes |
| Onboard ISC slot | 1 |
|
Default memory double-data-rate 3 (DDR3) error-correction-code (ECC) DRAM (Combined control/services/data planes) |
4 GB |
|
Maximum memory DDR3 ECC DRAM (Combined control/services/data planes) |
8 GB |
| Default flash memory | 4 GB |
| Maximum flash memory | 8 GB |
| External USB 2.0 slots (type A) | 1 |
|
USB console port -type B mini (up to 115.2 kbps) |
1 |
|
Serial console port - RJ45 (up to 115.2 kbps) |
1 |
|
Serial auxiliary port - RJ45 (up to 115.2 kbps) |
1 |
| Power-supply options | External: AC and PoE |
|
Dimensions (H x W x D) |
1.75 x 14.55 x 11.60 in (44.55 x 369.57 x 294.64 mm) |
|
External Power Supply Dimensions (H x W x D) |
2.95 x 1.18 x 6.10 in (75 x 30 x 155 mm) |
|
Shipping Box Dimensions (H x W x D) |
7.0 x 21.5 x 16.125 in (177.8 x 546.1 x 409.6 mm) |
| Rack height | 1 Rack Unit (1RU) |
| Wall-mount | Mounting holes under chassis |
| Packaging Weight | 2.2 lb (1 kg) |
| Airflow | Right I/O side to Left I/O side |
| MTBF (Hours) | 593270 |
| Temperature | 32 to 104°F(0 to 40°C) |
| Altitude(China) | 0 – 6,560 ft.(0 – 2,000 m) |
| Altitude(Rest of the world) | 0 – 10,000 ft.(0 – 3,050 m) |
| Relative humidity | 5% to 85% |
| Short-term humidity | 5% to 90%, not to exceed 0.024 kg water/kg of dry air |
|
Acoustics:Sound pressure (Typical/maximum) |
24.2/51.9 dBA |
|
Acoustics: Sound power (Typical/maximum) |
31.9/59.9 dBA |
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