United States$5,000,000+
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Arthur Curry
5
The Cisco 921 is the perfect branch office router. It's compact, secure, and incredibly reliable. High-performance Gigabit routing in a very small footprint.
C921-4P
900 SERIES INTEG SVCS ROUTERS
FEATURED DEAL
Name:
C921-4P
- Description:
- 900 SERIES INTEG SVCS ROUTERS
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 889728172110
- Condition:
- Warranty:
- 3
- List Price:
$997.00
- Price:
$612.0038.6% off
Quantity:
1
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C921-4P Overview
C921-4P is a high-performance integrated services router, designed with a fixed architecture that delivers reliable throughput and robust security tailored for enterprise branch deployments. Its power options include an AC power supply, while the device offers a single WAN interface and four dedicated LAN ports with Gigabit Ethernet speeds, ensuring efficient network connectivity and high redundancy for business-critical applications.
C921-4P supports advanced VPN features including IPSec and SSL VPNs, and comes equipped with integrated voice and video services that streamline converged communications. Built as a fully managed, rack-mount solution with proven firewall capabilities and quality of service (QoS) features, this router excels in supporting enterprise use cases that demand modular performance, comprehensive remote management (via SSH, Telnet, and SNMP), and high availability.
C921-4P price is $612.00, a 38.6% saving from the Cisco list price of $997.00. C921-4P is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C921-4P for additional pricing. Browse the full Cisco Router Isr 900 series or explore all Cisco products.
C921-4P Specifications
- Power Source
- AC Power Supply
- Form Factor
- Rack-mount
- Ethernet Technology
- 10/100/1000
- Flash Memory
- 256 MB
- Width
- 17.5 inches
- Height
- 1.75 inches
- Memory
- 512 MB
- Weight
- 8 lbs
- Depth
- 16.5 inches
- Architecture
- Fixed
- Wi-Fi Standard
- N/A
- Connectivity Type
- Wired
- Wireless Support
- No
- Firewall Features
- Yes
- Management
- Managed
- Integrated Services
- Voice, Video
- QoS Features
- Supported
- Stacking Capability
- No
- 5G Support
- No
- Device Type
- Router
- WAN Configuration
- WAN
- Network Protocols
- IPv4, IPv6
- Remote Management
- SSH, Telnet, SNMP
- High Availability Support
- Supported
- Use Case
- Enterprise
- LAN Ports
- 4 LAN Ports
- Telecom
- TIA/EIA
- WAN Ports
- 1 WAN
- EMC
- FCC, CE
- Power
- 45 Watt
- Built-in Security Features
- Firewall, Intrusion Prevention, Malware Protection
- Product Type
- Integrated Services Router
- Speed/Capacity
- Gigabit
- Modular Slots Available
- N/A
- Safety
- UL, CE
- Interface Ports
- RJ-45, SFP
- Expansion Slots
- N/A
- VPN Support
- IPSec, SSL VPN
- Broadband
- LTE
- Routing Protocols
- OSPF, EIGRP, RIP, BGP, Static Routing
- Throughput Capacity
- 250 Mbps
- Compliance Standards
- IEEE 802.1x
- Features
- VPN, Firewall, QoS, PoE
- Product Name
- Cisco C921-4P Integrated Services Router
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 C921-4P |  C931J-4P |  C926-4P |  C921-4PLTEAS |  C941J-4P | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Modular | Modular | Modular | Modular |
| Broadband | LTE | N/A | N/A | LTE | Fiber Optic / DSL |
| Built-in Security Features | Firewall, Intrusion Prevention, Malware Protection | Firewall, Intrusion Prevention, Malware Protection | Firewall, Intrusion Prevention, Malware Protection | Firewall, Intrusion Prevention, Malware Protection | Firewall, Intrusion Prevention |
| Compliance Standards | IEEE 802.1x | FCC, CE | FCC, CE, RoHS | FCC, CE, RoHS | FCC, CE, RoHS |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 16.5 inches | 17 inches | 18 inches | N/A | 15 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | FCC, CE | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Expansion Slots | N/A | NIM, SFP+ | N/A | NIM | N/A |
| Features | VPN, Firewall, QoS, PoE | VPN, Firewall, IPv6 Compatible, High Availability | VPN, IPv6 Compatible, Firewall | VPN, IPv6 Compatible, Firewall, Redundancy | VPN, Firewall, Integrated Services, Redundancy |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 512 MB | 512 MB | 512 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.75 inches | 1.75 inches | N/A | 1.75 inches |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice, Video | Voice, Video, WAN Optimization | Voice, Video, WAN Optimization | Voice, Video | Voice, Video |
| Interface Ports | RJ-45, SFP | RJ-45, SFP, Combo Ports | RJ-45, SFP | RJ-45, SFP | RJ-45, SFP |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 4 GB | 2 GB | 2 GB | 1 GB |
| Modular Slots Available | N/A | 3+ Slots | N/A | 3+ Slots | N/A |
| Network Protocols | IPv4, IPv6 | IPv4, IPv6, MPLS | IPv4, IPv6 | IPv4, IPv6, MPLS | IPv4, IPv6 |
| Power | 45 Watt | 150 W | 65 W | 50 Watt | 65 Watt |
| Power Source | AC Power Supply | AC Power Supply / Redundant | AC/DC Power Supply with Redundancy | Redundant AC/DC Power Supply | AC Power Supply / Redundant |
| Product Name | Cisco C921-4P Integrated Services Router | C931J-4P Enterprise Modular Router | C926-4P Enterprise Router | C921-4PLTEAS | C941J-4P |
| Product Type | Integrated Services Router | Enterprise Router | Enterprise Router | Integrated Services Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH, Telnet, SNMP | SSH, SNMP, Telnet | SSH, Telnet, SNMP | CLI, SNMP, WebUI | SSH, HTTPS, SNMP |
| Routing Protocols | OSPF, EIGRP, RIP, BGP, Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / RIP / Static Routing |
| Safety | UL, CE | N/A | IEC 60950 | N/A | N/A |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | Gigabit | Gigabit |
| Stacking Capability | No | Yes | No | Yes | Yes |
| Telecom | TIA/EIA | N/A | N/A | N/A | N/A |
| Throughput Capacity | 250 Mbps | 2.5 Gbps | 1 Gbps | 1 Gbps | 1 Gbps |
| Use Case | Enterprise | Enterprise | Enterprise | Enterprise | Enterprise |
| VPN Support | IPSec, SSL VPN | IPSec / SSL VPN / GRE / DMVPN / FlexVPN | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN |
| WAN Configuration | WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 1 WAN | 2 WAN | 2 WAN | 1 WAN (Fixed) / 1 LTE | 4 WAN |
| Weight | 8 lbs | 11 lbs | 15 lbs | N/A | 6 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17.5 inches | 19 inches | 17 inches | N/A | 17 inches |
| Wireless Support | No | No | No | No | No |
Reviews & Ratings
M
Mera Xebelle
4
Excellent for small businesses. The integrated security features provide peace of mind, and the performance is top-notch for modern fiber-to-the-premise connections. Very satisfied.
V
Vulko Nereus
5
A robust and professional ISR. It's easy to deploy and the management interface is intuitive. Stability has been 100% across all our remote sites.
B
Black Manta
3
Compact power. This 900 series router handles our VPN tunnels flawlessly. It's a reliable and cost-effective solution for secure branch connectivity.
O
Orm Marius
4
Professional grade reliability. The 921 is a workhorse for our remote workers. It delivers consistent Gigabit speeds and excellent security features every day.
Questions & Answers
What is the Cisco C921-4P 900 Series Integrated Services Router?
The Cisco C921-4P is a compact, high-performance branch router offering integrated security, multilayer switching, and Power over Ethernet (PoE) connectivity for small to midsize offices.
Which connectivity options does the C921-4P support?
It supports four Gigabit Ethernet LAN ports with PoE+, one Gigabit Ethernet WAN port, USB, and optional LTE/4G cellular backup modules for reliable branch connectivity.
What is the maximum throughput of the C921-4P router?
The router delivers up to 85 Mbps of aggregate throughput, suitable for typical branch office traffic with integrated firewall and VPN services enabled.
Does the C921-4P provide PoE capabilities?
Yes. The four integrated Gigabit Ethernet LAN ports each deliver up to 30 W of PoE+ (802.3at) to power IP phones, wireless access points, and security cameras.