United States$5,000,000+
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Stephen Carter
5
Powerful router with PoE support. Handles voice and data workloads reliably in busy environments.
CISCO2851-AC-IP
2851 w/ AC+POE,2GE,4HWIC,3PVDM,1NME-XD,2AIM,IP BASE,128F/512...
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Name:
CISCO2851-AC-IP
- Description:
- 2851 w/ AC+POE,2GE,4HWIC,3PVDM,1NME-XD,2AIM,IP BASE,128F/512D
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 746320911755
- Condition:
- Warranty:
- 3
- List Price:
$6,980.00
- Price:
$3,169.0054.6% off
Quantity:
1
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CISCO2851-AC-IP Overview
CISCO2851-AC-IP is a modular, integrated services router designed for enterprise branch networking with a robust architecture that combines flexible power options, dual 10/100 Ethernet interfaces, and modular expansion capabilities. It delivers integrated services including voice, video, and data while offering secure VPN features, built‐in firewall, and advanced QoS, ensuring reliable performance and scalability for demanding WAN/LAN environments.
CISCO2851-AC-IP supports versatile deployment use cases with configurable interface options, efficient throughput for small to medium branch offices, and the ability to integrate additional modules via its EHWIC/NIM slots. Its design focuses on reliable operation with high performance routing, comprehensive security, and the option for future enhancements, making it an excellent choice for secure branch connectivity and converged network communications.
CISCO2851-AC-IP price is $3,169.00, a 54.6% saving from the Cisco list price of $6,980.00. CISCO2851-AC-IP is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for CISCO2851-AC-IP for additional pricing. Browse the full Router Isr 2800 series or explore all Cisco products.
CISCO2851-AC-IP Specifications
- Product Type
- Enterprise Router
- VPN Support
- IPSec / DMVPN / N/A
- Power Source
- AC Power Supply
- Routing Protocols
- OSPF / BGP / EIGRP / RIP / Static Routing
- Broadband
- N/A
- Architecture
- Modular
- WAN Configuration
- Dual WAN
- WAN Ports
- 2 WAN
- LAN Ports
- N/A
- Ethernet Technology
- 10/100
- Wi-Fi Standard
- N/A
- Connectivity Type
- Wired
- Network Protocols
- IPv4, IPv6
- Remote Management
- CLI, SNMP, SSH
- Compliance Standards
- FCC, CE
- Wireless Support
- No
- Speed/Capacity
- N/A
- Firewall Features
- Yes
- Features
- VPN / VoIP / IPv6 Compatible / Firewall / MPLS
- Use Case
- Enterprise
- Management
- Managed
- Form Factor
- Rack-mount
- Integrated Services
- Voice / Video
- High Availability Support
- Not Supported
- Safety
- N/A
- EMC
- N/A
- Telecom
- N/A
- Throughput Capacity
- 0.075
- QoS Features
- Supported
- Built-in Security Features
- Firewall / Intrusion Prevention
- Expansion Slots
- EHWIC / NIM
- Modular Slots Available
- 2 Slots
- Stacking Capability
- No
- 5G Support
- No
- Memory
- 512 MB
- Flash Memory
- 256 MB
- Interface Ports
- RJ-45
- Power
- 125 W
- Device Type
- Router
- Product Name
- Cisco 2851-AC-IP Integrated Services Router
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
CISCO2851-AC-IP Use Case
Branch Office Unified Communications Gateway Deployment
Scenario: A distributed financial-services branch with 50+ IP phones and HD video endpoints leverages the CISCO2851-AC-IP-2851’s integrated AC+PoE to power endpoints, 3 PVDM DSP modules for voice processing, and 4 HWIC slots for analog-failover modules. The dual-Gigabit Ethernet interfaces and Cisco IOS IP Base enable end-to-end QoS and unified voice, video, and data convergence on a single platform. Outcome: 30% reduction in infrastructure costs, 99.9% call uptime, and simplified network management through centralized configuration and monitoring.
Multi-Site Secure VPN and WAN Resiliency for Retail Chains
Scenario: A national retail chain deploys the CISCO2851-AC-IP-2851 at 200 stores to establish secure MPLS and Internet VPN tunnels over dual-GE links. Two AIM modules provide stateful firewall and intrusion prevention, while SFP ports deliver link diversity and failover. Outcome: Achieved PCI-DSS compliance, 40% reduction in network downtime, centralized security policy enforcement, and improved POS transaction throughput.
Industrial IoT Edge Gateway for Smart Manufacturing
Scenario: An automotive manufacturing plant uses the CISCO2851-AC-IP-2851 as an IoT edge gateway aggregating sensor and PLC data via 4 HWIC serial modules and high-density NME-XD flash for local analytics. AC+PoE powers industrial cameras and wireless APs; dual AIM modules secure SCADA traffic with real-time IPS. Outcome: 25% decrease in production-line interruptions, enhanced operational visibility, and streamlined remote firmware updates over secure VPN.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 CISCO2851-AC-IP |  C2821-VSEC-CCME/K9 |  C2801-4SHDSL/K9 |  CISCO2821-DC |  C2801-ADSL2-M/K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Fixed | Fixed | Fixed | Modular |
| Broadband | N/A | N/A | DSL | N/A | DSL |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / VPN | Firewall / Intrusion Prevention | Firewall | Firewall, Intrusion Prevention, ACL |
| Compliance Standards | FCC, CE | FCC / CE | FCC / CE | FCC, CE, UL | RoHS, FCC, CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | N/A | 13 inches | 11.1 inches | N/A | 16.3 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100 | 10/100 Ethernet | 10/100 | 10/100 | 10/100 |
| Expansion Slots | EHWIC / NIM | NIM | EHWIC | EHWIC | EHWIC / NIM |
| Features | VPN / VoIP / IPv6 Compatible / Firewall / MPLS | VPN / IPv6 Compatible / Firewall / Integrated Security | VPN / IPv6 Compatible / Firewall | VPN / IPv6 Compatible / Firewall | VPN, Firewall, Integrated Services, Modular Expansion, DSL, Security |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 128 MB | 128 MB | 128 MB | 128 MB |
| Form Factor | Rack-mount | Rack-mount / Desktop | Rack-mount | Rack-mount | Rack-mount |
| Height | N/A | 1.75 inches | 1.73 inches | N/A | 1.73 inches |
| High Availability Support | Not Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice / Video | Voice / Video / WAN Optimization | Voice | Voice / Video | Voice / Security / WAN Optimization |
| Interface Ports | RJ-45 | RJ-45 / Console Port | RJ-45 | RJ-45 | RJ-45 |
| LAN Ports | N/A | 2 LAN Ports | 2 LAN Ports | 4 LAN Ports | 2 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 256 MB | 256 MB | 512 MB | 256 MB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | 2 Slots | 2 Slots |
| Network Protocols | IPv4, IPv6 | IPv4 / IPv6 | IPv4 / IPv6 | IPv4, IPv6, OSPF, EIGRP, RIP, BGP, Static Routing | IPv4, IPv6 |
| Power | 125 W | 250W | 65 Watt | 55 W | 65 W |
| Power Source | AC Power Supply | AC Power Supply (250W) | AC Power Supply | DC Power Supply | AC Power Supply |
| Product Name | Cisco 2851-AC-IP Integrated Services Router | Cisco 2821 Integrated Services Router | Cisco 2801 Integrated Services Router - 4SHDSL/K9 | Cisco 2821-DC Integrated Services Router | Cisco 2801 ADSL2 Integrated Services Router |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | CLI, SNMP, SSH | Telnet / SSH / HTTP(s) / SNMP | Telnet / SSH / SNMP | Telnet, SSH, SNMP | Telnet, SSH, SNMP, HTTP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | N/A | N/A |
| Speed/Capacity | N/A | 10/100 Ethernet | N/A | Gigabit | Fast Ethernet |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 0.075 | 0.075 Gbps | 0.025 Gbps | 0.075 Gbps | 75 Mbps |
| Use Case | Enterprise | Enterprise / Business | Enterprise | Enterprise | Business |
| VPN Support | IPSec / DMVPN / N/A | IPSec VPN / SSL VPN / GRE / DMVPN | IPSec | IPSec | IPSec / SSL VPN |
| WAN Configuration | Dual WAN | WAN | WAN | Dual WAN | WAN |
| WAN Ports | 2 WAN | 2 WAN | 4 WAN | 2 WAN | 1 WAN |
| Weight | N/A | 11 lbs | 15 lbs | N/A | 19.2 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | 17 inches | 17.3 inches | N/A | 17.1 inches |
| Wireless Support | No | No | No | No | No |
Reviews & Ratings
B
Bruce Allen
4
Strong performance and flexibility. Ideal for integrated network and voice deployments.
T
Timothy Rogers
5
Cisco robustness you can trust. Stable under load and easy to manage.
J
Jeffrey Coleman
3
Good processing capacity and dependable uptime. Suitable for enterprise branches.
M
Martin Blake
4
A versatile router that meets demanding business requirements. No issues so far.
Questions & Answers
What are the key features of the Cisco 2851-AC-IP?
The Cisco 2851-AC-IP offers AC power, PoE support on two Gigabit Ethernet ports, four HWIC slots, three PVDM voice modules, one NME-XD slot, dual AIM slots, IP Base feature set, 128 MB flash and 512 MB DRAM.
How much power does the Cisco 2851-AC-IP consume?
Typical power consumption is 70W (AC mode) with PoE disabled; PoE budget provides up to 30W per port, subject to power-supply capacity.
Does the Cisco 2851-AC-IP support Power over Ethernet (PoE)?
Yes. Two Gigabit Ethernet ports deliver PoE to IEEE 802.3af/at devices, with a total budget of up to 60W, managed via the IP Base license.
How many network interfaces does the Cisco 2851-AC-IP have?
It includes two Gigabit Ethernet ports, four HWIC slots for modular connectivity and one NME-XD slot for high-density expansions.