CISCO ISR4221/K9 Router ISR 4000
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ISR4221/K9 Buying Guide
Cisco ISR 4221 Router ISR4221/K9 is listed by YYST Global for buyers looking for CISCO Router ISR 4000. ISR4221/K9 CISCO enterprise router for WAN edge projects. Contact YYST Global for stock, lead time and quote support. The listed condition is New Factory Sealed. The reference price is US$ 830.00. Contact our sales team to confirm stock, lead time, warranty and configuration before ordering.
- Model: ISR4221/K9
- Brand: CISCO
- Category: Cisco Router ISR 4000
- Condition: New Factory Sealed
- Reference price: US$ 830.00
ISR4221/K9 Overview
ISR4221/K9 is a CISCO enterprise router listed by YYST Global for WAN edge routing, branch connectivity, spare replacement and enterprise routing upgrades. This page is intended for buyers comparing replacement parts, project supply, spare inventory and quote options.
YYST Global helps enterprise customers confirm model information, product category, condition, availability and sourcing route before purchase. For time-sensitive projects, send the model number and required quantity so our sales team can check stock, lead time and compatible alternatives.
Product name: Cisco ISR 4221 Router ISR4221/K9. Category: Cisco Router ISR 4000. Condition: New Factory Sealed.
ISR4221/K9 Specification
| Exact model | ISR4221/K9 |
| Product family | Cisco 4000 Family Integrated Services Routers |
| Default aggregate throughput | 35 Mbps |
| Performance-license throughput | 75 Mbps |
| Boost aggregate CEF-only throughput | Up to 1.2 Gbps |
| Onboard WAN/LAN ports | 2 x 10/100/1000 |
| SFP-based ports | 1 |
| Network interface module slots | 2 |
| Data-plane memory | 2 GB, non-upgradable |
| Official manufacturer reference | Cisco 4000 Family Integrated Services Router Official Data Sheet |
| Procurement validation | Confirm exact suffix, regional variant, power option, licenses, accessories, software compatibility, warranty and lead time before purchase. |
| Parameter | Specification / Value |
|---|---|
| Model Number | Cisco ISR4221/K9 |
| Product Type | Integrated Services Router |
| Performance / Throughput | 35 Mbps (default), upgradable to 75 Mbps with Performance License |
| Architecture | Cisco Unified Computing System (UCS) based multi-core CPU architecture |
| Form Factor | 1 Rack Unit (1U) |
| LAN/WAN Ports | 2 × Integrated 10/100/1000 Mbps RJ-45 Ethernet ports (RJ-45/SFP combo) |
| Network Interface Module (NIM) Slots | 2 |
| Service Module (SM-X) Slots | 1 Internal (shared for future expansion) |
| Integrated Services Card (ISC) Slot | 1 |
| USB Ports | 1 × USB Type A (for storage), 1 × mini-USB console port |
| Console / Auxiliary Ports | 1 × RJ-45 console port, 1 × RJ-45 auxiliary port |
| Default DRAM | 4 GB |
| Maximum DRAM | 8 GB |
| Default Flash Memory | 4 GB |
| Maximum Flash Memory | 8 GB |
| Power Supply | Internal AC power supply (optional DC power version) |
| Maximum Power Consumption | Approximately 45 W (without PoE modules) |
| PoE Capability | Optional via PoE NIM modules |
| Rack Mountable | Yes (1U standard rack mount kit included) |
| Dimensions (H × W × D) | 44.45 × 369.57 × 294.64 mm (1.75 × 14.55 × 11.6 inches) |
| Weight | Approximately 4.5 kg (10 lbs) |
| Operating Temperature | 0 °C to 40 °C |
| Storage Temperature | -40 °C to 70 °C |
| Humidity Range | 5% – 85% (non-condensing) |
| Forwarding Capacity | Up to 50,000 packets per second (approximate) |
| Routing Protocols Supported | Static, RIP, OSPF, EIGRP, BGP, VRRP, Policy-Based Routing |
| Security Features | Zone-Based Firewall, IPsec VPN, SSL VPN, Secure Boot, Control Plane Protection |
| WAN Optimization Support | Cisco WAAS Express (optional) |
| Voice / Collaboration Support | SIP, SRST, DSP modules supported via add-ons |
| Virtualization Capabilities | Supports Cisco NFVIS and virtualized network functions (VNFs) |
| High Availability | Redundant Power Supply (RPS) supported |
| Management Interfaces | CLI (console/SSH), Web UI, SNMP v1/v2/v3, NetFlow, RESTCONF |
| Licensing Model | Feature-based (Security, Performance, Unified Communications, AppX, etc.) |
| Target Use Case | Secure WAN connectivity for branch offices, cloud access, and unified communications integration |
ISR4221/K9 Warranty
 | Low Price Guarantee |  | Quality Assurance |
 | Free CCIE Expert Technical Support |  | Commodity Refund Guarantee |
 | Diversified and Flexible Transportation Services |  | Standard Policy |
ISR4221/K9 FAQ
What is ISR4221/K9?
Cisco ISR 4221 Router ISR4221/K9 is a CISCO Router ISR 4000 product supplied by YYST Global for enterprise IT procurement and infrastructure projects.
What default aggregate throughput is listed for ISR4221/K9?
For ISR4221/K9, the official specification lists default aggregate throughput as 35 Mbps. Confirm the exact SKU, suffix and hardware revision against the official manufacturer reference before ordering.
What performance-license throughput is listed for ISR4221/K9?
For ISR4221/K9, the official specification lists performance-license throughput as 75 Mbps. Confirm the exact SKU, suffix and hardware revision against the official manufacturer reference before ordering.
What boost aggregate cef-only throughput is listed for ISR4221/K9?
For ISR4221/K9, the official specification lists boost aggregate cef-only throughput as Up to 1.2 Gbps. Confirm the exact SKU, suffix and hardware revision against the official manufacturer reference before ordering.
Is ISR4221/K9 available from YYST Global?
ISR4221/K9 is listed as in stock at YYST Global. Contact the sales team to confirm the required quantity, exact configuration, delivery destination and current lead time before ordering.
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