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Name:
CISCO2851
- Description:
- Cisco 2851 router 2851 w/ AC PWR, 2GE, 4HWIC, 3PVDM, 1NME-XD, 2AIM, IP BASE, 128F/512D
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- 662895827119
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3 Year Extended Warranty
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Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
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Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
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Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
Service Boundaries & Exclusions
What’s covered — and what’s best avoided.
Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
Know your location’s service type.
In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
Minimal documentation required.
To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
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Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
Initiate returns with ease.
Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.
Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
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CISCO2851 Overview
CISCO2851 is a modular, integrated services router engineered for enterprise branch environments. It features a robust architecture with configurable EHWIC expansion slots, multiple WAN and LAN interface options, and integrated services that deliver voice, video, and data capabilities while operating on an AC Power Supply with internal redundancy options to safeguard network uptime.
CISCO2851 also offers advanced VPN functionality with IPSec and DMVPN support to secure remote connectivity, alongside reliable throughput capacity and QoS features that ensure consistent performance. Its modular design paired with built‐in firewall protection and scalability makes it ideally suited for enterprise use cases demanding high availability, superior security, and versatile connectivity solutions.
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CISCO2851 Specifications
| Product Type | Enterprise Router |
| VPN Support | IPSec / DMVPN / N/A |
| Power Source | AC Power Supply |
| Routing Protocols | OSPF / BGP / EIGRP / MPLS / RIP / Static Routing |
| Broadband | N/A |
| Architecture | Modular |
| WAN Configuration | Dual WAN |
| WAN Ports | 2 WAN |
| LAN Ports | Modular LAN |
| Ethernet Technology | 10/100 |
| Wi-Fi Standard | N/A |
| Connectivity Type | Wired |
| Network Protocols | IPv4, IPv6 |
| Remote Management | Telnet, SSH, SNMP |
| 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 / WAN Optimization |
| High Availability Support | Supported |
| Safety | N/A |
| EMC | N/A |
| Telecom | N/A |
| Throughput Capacity | 0.075 Gbps |
| QoS Features | Supported |
| Built-in Security Features | Firewall |
| Expansion Slots | EHWIC |
| Modular Slots Available | 2 Slots |
| Stacking Capability | No |
| 5G Support | No |
| Memory | 512 MB |
| Flash Memory | 256 MB |
| Interface Ports | RJ-45 |
| Power | 65 Watt |
| Device Type | Router |
| Product Name | Cisco 2851 Integrated Services Router |
| Height | 4.4 inches |
| Width | 17.3 inches |
| Depth | 14.5 inches |
| Weight | 23.1 lbs |
CISCO2851 Use Case
Secure Multi-Site VPN Connectivity for Distributed Retail Chain
A retail organization with 50+ storefronts deploys the Cisco 2851 router (AC PWR, 2 GE, 4 HWIC, 3 PVDM, 1 NME-XD, 2 AIM, IP BASE, 128F/512D) at each location to terminate IPsec VPN tunnels back to headquarters. Leveraging the four HWIC slots and two AIM modules, the retailer integrates firewall, intrusion prevention and WAN optimization services in a single platform. The 3 PVDM modules handle voice traffic for PoS terminals, while the 2 x GE ports provide redundant uplinks. Outcome: End-to-end encryption with sub-2 ms latency, centralized policy enforcement, 30% faster transaction processing and a 40% reduction in security appliance footprint.
High-Definition VoIP and Video Conferencing for Corporate Headquarters
A multinational company consolidates voice, video and data on the Cisco 2851 router (AC PWR, 2 GE, 4 HWIC, 3 PVDM, 1 NME-XD, 2 AIM, IP BASE, 128F/512D) at its main office. Three PVDM modules deliver up to 96 concurrent HD VoIP calls and integrate directly with the company’s Cisco Unified Communications Manager. The NME-XD flash module stores video messages and custom IVR scripts, while the HWIC slots host analog and digital voice gateways. Outcome: 50% reduction in call setup times, crystal-clear video meetings, unified management for voice and data and a 25% decrease in telephony CAPEX.
Scalable WAN Services for Growth-Oriented SMB with Integrated Security
A rapidly growing SMB uses the Cisco 2851 router (AC PWR, 2 GE, 4 HWIC, 3 PVDM, 1 NME-XD, 2 AIM, IP BASE, 128F/512D) as its primary WAN edge device. The two Gigabit Ethernet ports connect to dual ISP links for active/standby failover. Four HWIC slots support DSL, T1/E1 or 3G/4G backup modules, while the two AIM modules enable unified threat management and content filtering. The onboard NME-XD flash holds application signatures for deep packet inspection. Outcome: Seamless failover with under 5 s downtime, 99.9% network availability, integrated security and a platform that scales to 200% more throughput as the company expands.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Fixed | Fixed with Modular Expansion | Modular | Modular |
| Broadband | N/A | N/A | N/A | N/A | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection | Firewall | Firewall |
| Compliance Standards | FCC / CE | FCC, CE, RoHS | RoHS, FCC, CE | IEEE 802.3 / IEEE 802.3u | FCC / CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 17.48 in | 15.5 inches | N/A | 11.3 inches | 14.5 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | FCC | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | EHWIC | EHWIC | EHWIC | EHWIC | EHWIC |
| Features | VPN / VoIP / IPv6 Compatible / Firewall / POE / MPLS | VPN / Voice / NAT / ACL / QoS | VPN / VoIP / IPv6 Compatible / Firewall | VPN / IPv6 Compatible / Firewall / Voice | VPN / VoIP / IPv6 Compatible / Firewall / MPLS |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Desktop | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.73 in | 1.8 inches | N/A | 1.8 inches | 4.4 inches |
| High Availability Support | Not Supported | Supported | Supported | Not Supported | Supported |
| Integrated Services | Voice / Video / WAN Optimization | Voice / Security / Data | Voice | Voice | Voice / Video / WAN Optimization |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 | RJ-45 | RJ-45 |
| LAN Ports | 4 LAN Ports | 2 LAN Ports | 4 LAN Ports | N/A | Modular LAN |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 256 MB | 512 MB | 512 MB | 512 MB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | 2 Slots | 2 Slots |
| Network Protocols | IPv4/IPv6 | IP, IGRP, OSPF, EIGRP, RIP, BGP | IPv4, IPv6, MPLS, PPP | IPv4 / IPv6 | IPv4, IPv6 |
| Power | 250 Watts | 72W | 85 Watt | 60W | 65 Watt |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply / Redundant | AC Power Supply | AC Power Supply |
| Product Name | Cisco 2811 Integrated Services Router - 15 UC | CISCO2821-SRST/K9 | Cisco 2821 Integrated Services Router VSEC SRST | Cisco 2821 Integrated Services Router | Cisco 2851 Integrated Services Router |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | Telnet/SSH/SNMP | Telnet, SSH, SNMP, HTTP, HTTPS | CLI, SNMP, Telnet, SSH | Telnet / SSH / SNMP | Telnet, SSH, SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / BGP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / BGP / RIP / Static Routing | OSPF / BGP / EIGRP / MPLS / RIP / Static Routing |
| Safety | UL/cUL | N/A | N/A | N/A | N/A |
| Speed/Capacity | Gigabit | N/A | Gigabit | N/A | N/A |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 15 Mbps | 0.025 Gbps | 0.075 Gbps | N/A | 0.075 Gbps |
| Use Case | Enterprise | Enterprise / Small Business | Enterprise | Enterprise | Enterprise |
| VPN Support | IPSec | IPSec | IPSec / SSL VPN / DMVPN | IPSec | IPSec / DMVPN / N/A |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | 15.93 lbs | 10 lbs | N/A | 10.3 lbs | 23.1 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 19.69 in | 17.7 inches | N/A | 17.3 inches | 17.3 inches |
| Wireless Support | No | No | No | No | No |
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Questions & Answers
Q
What is the Cisco 2851 Router (SKU: CISCO2851)?
A
The Cisco 2851 is a high-performance, modular branch router featuring AC power, two Gigabit Ethernet ports, four HWIC slots, three PVDM slots, one NME-XD slot, dual AIM slots and an IP BASE license for secure WAN connectivity.
Q
Which network interfaces does the Cisco 2851 provide?
A
The Cisco 2851 offers two Gigabit Ethernet RJ-45 ports, four High-Speed WAN Interface Card (HWIC) slots, one Network Module Enhanced (NME-XD) slot and two Advanced Integration Module (AIM) bays for voice or security modules.
Q
What expansion modules are supported by the Cisco 2851?
A
Supported expansions include four HWIC modules (for additional Ethernet, serial or DSL ports), one NME-XD module (for gigabit WAN, fiber or specialized I/O) and two AIM slots for security or voice enhancement.
Q
How much memory and storage does the Cisco 2851 include?
A
The Cisco 2851 ships with 128 MB of Flash memory and 512 MB of DRAM, expandable up to 256 MB Flash and 2 GB DRAM for advanced applications and larger configurations.
Q
What power supply does the Cisco 2851 use?
A
The Cisco 2851 comes with an integrated AC power supply rated for 100–240 VAC, 50–60 Hz, supporting high-availability deployments and worldwide voltage compatibility.
Q
Which software license is preloaded on the Cisco 2851?
A
The router includes an IP BASE license, enabling advanced IP routing protocols (EIGRP, OSPF, BGP), basic security features and QoS functionality out of the box.
Q
What throughput and performance can I expect from the Cisco 2851?
A
The Cisco 2851 delivers up to 90 Mbps of aggregate throughput with Cisco Express Forwarding enabled, supporting thousands of concurrent sessions for small to mid-size branch offices.
Q
What security features are available on the Cisco 2851?
A
Built-in security includes hardware accelerated VPN (IPsec), firewall services, intrusion prevention system (IPS) modules, and integration with Cisco IOS zone-based firewall and access control lists.
Q
What are PVDM slots and how many does the Cisco 2851 have?
A
PVDM (Packet Voice Digital Signal Processor Module) slots host DSP modules for voice processing. The Cisco 2851 features three PVDM slots supporting up to PVDM3-32 modules for voice, conferencing and transcoding.
Q
Which use cases suit the Cisco 2851 Router?
A
Ideal for branch office WAN aggregation, secure VPN connectivity, integrated voice and data services, remote office consolidation and managed service provider deployments.
Q
How do I perform basic configuration on the Cisco 2851?
A
Use Cisco IOS command-line interface (CLI) via console or SSH to configure interfaces, routing protocols and security policies. The Cisco Configuration Professional GUI can accelerate initial setup.
Q
What management and monitoring tools support the Cisco 2851?
A
Manage with Cisco Prime Infrastructure, Cisco IOS Embedded Management, SNMP, NetFlow and syslog for real-time monitoring, performance analytics and configuration backups.
Q
What warranty and support options exist for the Cisco 2851?
A
Cisco provides a 90-day limited hardware warranty, software bug fixes and access to Cisco Technical Assistance Center (TAC). Extended service contracts and SmartNet options are available.
Q
Is the Cisco 2851 Router end-of-sale or end-of-life?
A
Cisco announced the end-of-sale for the 2851 in 2016, but extended support continues under Cisco’s EOL policy. Check Cisco’s official EOL bulletins for current support dates.
Q
How can I purchase the Cisco 2851 Router and what is the price range?
A
The Cisco 2851 is available through authorized Cisco resellers and online retailers. Prices vary by configuration, condition (new or refurbished) and region, typically ranging from $500 to $1,200.
Q
Can the Cisco 2851 be integrated with modern network virtualization?
A
The router supports Cisco IOS virtualization features like VRF (Virtual Routing and Forwarding) and MPLS VPN, allowing logical network segmentation and simplified service delivery.
Q
What ROI benefits does the Cisco 2851 deliver?
A
By consolidating routing, security and voice services into one platform, the Cisco 2851 reduces hardware costs, simplifies management and accelerates deployment, delivering rapid operational ROI.
