ISR4221/K9 Overview
Cisco 4221 Integrated Services router is design to deliver advanced services to the small enterprise branch environment. It delivers 35Mbps thoughtput by default. With pay-as-you-grow performance, you can increase forwarding capacity to 75Mbps by buying licenses.
Quick Specs
Table 1 shows the Quick Specs:
Product Code | Cisco ISR4221/K9 |
Aggregate Throughput | 35 Mbps to 75 Mbps |
Total onboard WAN or LAN 10/100/1000 ports | 2 |
RJ-45-based ports | 2 |
SFP-based ports | 1 |
NIM (Network Interface Modules) slots | 2 |
Onboard ISC slot | No |
Default memory double-data-rate 3 (DDR3) error-correction-code (ECC) DRAM (Combined control/services/data planes) | 4 GB |
Flash Memory | 8 GB |
Power-supply options | External AC only |
Rack height | 1 RU |
Dimensions (H x W x D) | 1.72 x 12.7 x 10 in (43.7 x 322.6 x 254 mm) |
Weight with AC PS (no modules) | 7.1 lb (3.22 kg) |
Product Details
Figure 1 shows the LEDs on the front panel of the Cisco ISR4221/K9.
There are 4 LEDs on the front panel.
Figure 2 shows the back panel of Cisco ISR4221/K9:Note
1 | GE 0/0/0 RJ-45 (copper cable) port | 5 | Console port |
2 | Power switch | 6 | GE 0/0/1 (copper cable) port |
3 | Power input connector | 7 | GE 0/0/0 SFP (fiber-optic) port |
4 | GE "MGMT" port (with USB port below) | 8 | NIM slots |
The Modules & Cards
Table 2 shows some recommended modules and cards
Items | Models | Description |
Console and Auxillary Cables | CAB-CONSOLE-RJ45 | Cisco CAB-CONSOLE-RJ45 Console Cable 6ft with RJ45 and DB9F |
Network Interface Modules | NIM-1MFT-T1/E1 | Cisco Fourth-Generation Multiflex Trunk Voice and WAN network interface module |
NIM-ES2-4 | Cisco 4000 Series Integrated Services Router 4-Port Gigabit Ethernet Switch Module layer 2 | |
NIM-ES2-8 | Cisco 4000 Series Integrated Services Router 8-Port Gigabit Ethernet Switch Module NIM | |
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
Table 3 shows the comparison
Technical Specifications | ISR4461/K9 | ISR4451-X/K9 | ISR4431/K9 | ISR4351/K9 | ISR4331/K9 | ISR4321/K9 | ISR4221/K9 |
Aggregate Throughput | 1.5Gbps | 1 Gbps to 2 Gbps | 500 Mbps to 1 Gbps | 200 Mbps to 400 Mbps | 100 Mbps to 300 Mbps | 50 Mbps to 100 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 |
Specification
Aggregate Throughput | 35 Mbps to 75 Mbps |
Total onboard WAN or LAN 10/100/1000 ports | 2 |
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) | No |
Onboard ISC slot | No |
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) | 4 GB |
Default memory DDR3 ECC DRAM (data plane) | NA |
Maximum memory DDR3 ECC DRAM (data plane) | NA |
Default memory DDR3 ECC DRAM (control/services plane) | NA |
Maximum memory DDR3 ECC DRAM (control/services plane) | NA |
Default flash memory | 8 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) | 0 |
Serial console port - RJ45 (up to 115.2 kbps) | 1 (combo CON/AUX port) |
Serial auxiliary port - RJ45 (up to 115.2 kbps) | 1 (combo CON/AUX port) |
Power-supply options | External: AC Only |
Redundant power supply | N/A |
AC input voltage | 100 to 240 VAC autoranging |
AC input frequency | 47 to 63 Hz |
AC input current range, AC power supply (maximum) | 1.5 to 0.6A |
AC input surge current | 90 A peak and less than 3 Arms per half cycle |
Typical power (no modules) (watts) | 24 |
Maximum power with AC power supply (watts) | 90 |
Maximum power with PoE power supply (platform only) (watts) | NA (no PoE support) |
Maximum endpoint PoE power available from PoE power supply (watts) | NA (no PoE support) |




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